FIRST SUPPLEMENTAL INDENTURE


         THIS FIRST SUPPLEMENTAL  INDENTURE,  dated as of November 4, 1997 (this
"Supplemental Indenture"), is between InaCom Corp., a corporation duly organized
and existing under the laws of the State of Delaware (the "Company"), having its
principal office at 10810 Farnam Drive, Omaha, Nebraska, 68154, and Norwest Bank
Minnesota, National Association, a national banking association (the "Trustee").

                                    RECITALS

         The Company and the  Trustee  are  parties to that  certain  Indenture,
dated as of September 30, 1997, (the "Indenture"), pursuant to which the Company
is authorized to issue its debentures,  notes or other evidences of indebtedness
(the  "Securities")  from  time to time and in one or more  series  as  provided
therein.

         Sections 301 and 901 of the Indenture provide that the characteristics,
terms, rights,  powers and other conditions of any such series of Securities may
be  established,  without the consent of any Holders,  in one or more indentures
supplemental thereto.

         The Company has not yet issued any Securities under the Indenture.

         The Company desires to issue $75,000,000 of Securities in the form of a
series of 4.50%  Convertible  Subordinated  Debentures Due November 1, 2004 (the
"4.50% Debentures") having the characteristics,  terms, rights, powers and other
conditions set forth herein.

         The  Company  has   authorized  the  execution  and  delivery  of  this
Supplemental  Indenture,  pursuant to which the Indenture  shall be supplemented
and modified as set forth herein.

         All things necessary to make the 4.50% Debentures, when executed by the
Company  and  authenticated  and  delivered  hereunder  and duly  issued  by the
Company,  the valid  obligations  of the Company  and to make this  Supplemental
Indenture a valid  agreement of the Company,  in  accordance  with their and its
terms, have been done.

         NOW, THEREFORE, THIS SUPPLEMENTAL INDENTURE WITNESSETH:

         For and in  consideration of the premises and the purchase of the 4.50%
Debentures  by the Holders  thereof,  it is mutually  agreed,  for the equal and
proportionate benefit of all Holders of the 4.50% Debentures, as follows:

     1.  Definitions.  Article  One,  Section  101 of the  Indenture  is  hereby
supplemented  and  modified by inserting  insert the  following  definitions  in
alphabetical order in such Section.

         "Change of Control" has the meaning specified in Section 1504(b).



         "Closing  Price Per Share"  means,  with respect to the Common Stock of
the Company,  for any day, the reported  last sales price  regular way per share
or, in case no such  reported  sale takes place on such day,  the average of the
reported closing bid and asked prices regular way, in either case (i) on the New
York Stock Exchange or, if the Common Stock is not listed or admitted to trading
on the New York Stock Exchange, on the principal national securities exchange on
which the Common  Stock is listed or admitted to trading,  or (ii) if not listed
on or admitted to trading on any national securities exchange then on the Nasdaq
National  Market  or (iii) if the  Common  Stock is not  listed or  admitted  to
trading on any national  securities  exchange or quoted on such National Market,
the average of the closing bid and asked prices in the  over-the-counter  market
as furnished by any New York Stock  Exchange  member firm  selected from time to
time by the Company for that purpose.

         "Common  Stock" means the Common Stock,  par value $0.10 per share,  of
the Company  authorized at the date of this  instrument as originally  executed.
Subject to the  provisions  of Section  1411,  shares  issuable on conversion or
repurchase  of 4.50%  Debentures  shall  include  only shares of Common Stock or
shares  of  any  class  or  classes   of  common   stock   resulting   from  any
reclassification or reclassifications thereof; provided, however, that if at any
time there shall be more than one such resulting  class,  the shares so issuable
on conversion of 4.50% Debentures shall include shares of all such classes,  and
the shares of each such class then so  issuable  shall be  substantially  in the
proportion  which the total  number of shares of such class  resulting  from all
such  reclassifications  bears to the total number of shares of all such classes
resulting from all such reclassifications.

         "common  stock"  includes any stock of any class of capital stock which
has no preference in respect of dividends or of amounts  payable in the event of
any  voluntary  or  involuntary  liquidation,  dissolution  or winding up of the
issuer thereof and which is not subject to redemption by the issuer thereof.

         "Company Notice" has the meaning specified in Section 1503.

         "Constituent Person" has the meaning specified in Section 1411.

         "Conversion  Agent"  means any  Person  authorized  by the  Company  to
convert 4.50%  Debentures in accordance with Article  Fourteen.  The Company has
initially appointed the Trustee as its Conversion Agent.

         "Conversion Price" has the meaning specified in Section 1404.


                                      -2-



         "Conversion Rate" has the meaning specified in Section 1401.

         "Expiration Time" has the meaning specified in Section 1404.

         "Non-electing Share" has the meaning specified in Section 1411.

         "Place of Conversion" has the meaning specified in Section 1402.

         "Reference Date" has the meaning specified in Section 1404.

         "Repurchase Date" has the meaning specified in Section 1501.

         "Repurchase Price" has the meaning specified in Section 1501.

         "Trading  Days" means (i) if the Common Stock is listed or admitted for
trading  on any  national  securities  exchange,  days on  which  such  national
securities  exchange  is open for  business  or (ii) if the Common  Stock is not
listed or admitted  for trading on any  national  securities  exchange,  days on
which trades may be made on the Nasdaq  National Market or any similar system of
automated  dissemination of quotations of securities  prices on which the Common
Shares  are quoted or (iii) if the Common  Stock is not listed or  admitted  for
trading on any  national  securities  exchange or quoted on the Nasdaq  National
Market or any other system of automated dissemination of quotation of securities
prices,   days  on  which  the  Common  Stock  is  traded  regular  way  in  the
over-the-counter  market and for which a closing  bid and a closing  asked price
for the Common Stock are available.


     2. Form of 4.50%  Debentures.  Article Two, Section 201 of the Indenture is
hereby  supplemented and modified by inserting the following language at the end
of such Section.

         Any 4.50% Debentures which constitute Registered Securities shall be in
substantially the form set forth below.


                         Form of Face of 4.50% Debenture

[The following legend shall appear on the face of each Global Security for which
The Depository Trust Company is to be the Depositary:

         UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF
THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION  ("DTC"), TO THE COMPANY OR
ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE
ISSUED  IS  REGISTERED  IN THE NAME OF CEDE & CO.  OR IN SUCH  OTHER  NAME AS IS
REQUESTED  BY AN  AUTHORIZED  REPRESENTATIVE  OF DTC (AND ANY PAYMENT IS MADE TO
CEDE  &  CO.  OR  TO  SUCH  OTHER  ENTITY  AS  IS  REQUESTED  BY  AN  AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER,

                                      -3-



PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY
PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.

         UNLESS  AND UNTIL IT IS  EXCHANGED  IN WHOLE OR IN PART FOR  REGISTERED
SECURITIES IN DEFINITIVE REGISTERED FORM IN THE LIMITED  CIRCUMSTANCES  REFERRED
TO IN THE INDENTURE,  THIS GLOBAL  SECURITY MAY NOT BE  TRANSFERRED  EXCEPT AS A
WHOLE BY THE  DEPOSITARY  TO A NOMINEE OF THE  DEPOSITARY OR BY A NOMINEE OF THE
DEPOSITARY  TO THE  DEPOSITARY  OR ANOTHER  NOMINEE OF THE  DEPOSITARY OR BY THE
DEPOSITARY  OR ANY SUCH NOMINEE TO A SUCCESSOR  DEPOSITARY  OR A NOMINEE OR SUCH
SUCCESSOR DEPOSITARY.]

                                  INACOM CORP.

                    4.50% CONVERTIBLE SUBORDINATED DEBENTURE

                              DUE NOVEMBER 1, 2004

No. __________                                                      $________

         InaCom Corp., a corporation  duly organized and existing under the laws
of Delaware  (herein  called the  "Company",  which term  includes any successor
Person under the Indenture hereinafter referred to), for value received,  hereby
promises to pay to __________________,  or registered assigns, the principal sum
of  _____________________  Dollars  ($_______)  on  November  1, 2004 and to pay
interest  thereon from November 4, 1997 or from the most recent Interest Payment
Date to which  interest has been paid or duly  provided  for,  semi-annually  in
arrears on May 1 and November 1 in each year (each, an "Interest Payment Date"),
commencing May 1, 1998 at the rate of 4.50% per annum computed on the basis of a
360 day year consisting of twelve 30-day months,  until the principal  hereof is
due, and at the rate of 4.50% per annum on any overdue principal and premium, if
any, and, to the extent permitted by law, on any overdue interest.  The interest
so payable,  and punctually  paid or duly provided for, on any Interest  Payment
Date will,  as  provided in the  Indenture,  be paid to the Person in whose name
this 4.50%  Convertible  Subordinated  Debenture (herein  individually  called a
"Security"  or  a  "4.50%  Debenture"  and,  together  with  those  other  4.50%
Convertible Subordinated Debentures Due November 1, 2004 collectively called the
"4.50% Debentures") (or one or more Predecessor  Securities is registered at the
close of business on the Regular Record Date for such  interest,  which shall be
April 15 or October 15 (whether or not a Business Day), as the case may be, next
preceding  such  Interest  Payment  Date.  Except as  otherwise  provided in the
Indenture,  any such interest not so  punctually  paid or duly provided for will
forthwith  cease to be payable to the Holder on such Regular Record Date and may
either  be paid to the  Person  in  whose  name  this  Security  (or one or more
Predecessor  Securities)  is  registered  at the close of  business on a Special
Record  Date  for the  payment  of such  Defaulted  Interest  to be fixed by the
Company,  notice whereof shall be given to Holders of 4.50%  Debentures not less
than 10 days prior to such Special  Record  Date,  or be paid at any time in any
other lawful  manner not  inconsistent  with the  requirements  of any automated
quotation  system or securities  exchange on which the 4.50%  Debentures  may be
listed, and upon such notice as may be required by such quotation system

                                      -4-



or exchange,  as the case may be, all as more fully  provided in the  Indenture.
Payments of principal  shall be made upon the  surrender of this Security at the
option of the Holder at the  Corporate  Trust Office of the Trustee,  or at such
other  office or  agency  of the  Company  as may be  designated  by it for such
purpose  in the  Borough  of  Manhattan,  The City of New York,  in such coin or
currency  of the United  States of  America  as at the time of payment  shall be
legal  tender for the payment of public and private  debts;  provided,  however,
that at the  option of the  Company  payment of  interest  may be made by check,
mailed to the  address of the Person  entitled  thereto  as such  address  shall
appear in the Security Register,  or, upon written  application by the Holder to
the Security Registrar.

         Except as specifically provided in the Indenture, the Company shall not
be required to make any payment  with  respect to any tax,  assessment  or other
governmental charge imposed by any governmental or any political  subdivision or
taxing authority thereof or therein.

         Reference is hereby made to the further provisions of this Security set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

         Unless the  certificate of  authentication  hereon has been executed by
the Trustee referred to on the reverse hereof by manual signature, this Security
shall  not be  entitled  to any  benefit  under  the  Indenture  or be  valid or
obligatory for any purpose.

         IN WITNESS  WHEREOF,  the Company has caused this instrument to be duly
executed under its corporate seal.

Dated:


                                     INACOM CORP.

[Corporate Seal]

                                     By:____________________________________
                                         Title:
                                         Name:

Attest:


_________________________________
Title:


                       Form of Reverse of 4.50% Debenture

         This Security is one of a duly authorized  issue of 4.50% Debentures of
the Company  designated as its 4.50%  Convertible  Subordinated  Debentures  Due
November 1, 2004 limited

                                      -5-



in aggregate  principal amount to $75,000,000,  as such amount may be increased,
but not by an  amount  in  excess  of  $11,250,000,  solely  as a result  of the
exercise of the underwriters' over-allotment option granted by the Company under
the underwriting agreement,  dated October 29, 1997, among the Company, Goldman,
Sachs & Co., J.P. Morgan & Co., and PaineWebber  Incorporated,  issued and to be
issued under an Indenture,  dated as of September 30, 1997, as supplemented  and
modified by that certain First Supplemental  Indenture,  dated as of November 4,
1997 (as so supplemented and modified,  herein called the "Indenture"),  between
the Company and Norwest Bank Minnesota, National Association, as Trustee (herein
called the  "Trustee",  which term  includes  any  successor  trustee  under the
Indenture), to which Indenture and all indentures supplemental thereto reference
is hereby made for a statement of the respective rights,  limitations of rights,
duties and  immunities  thereunder of the Company,  the Trustee,  the holders of
Senior  Indebtedness  and the Holders of the 4.50%  Debentures  and of the terms
upon which the 4.50% Debentures are, and are to be, authenticated and delivered.
The 4.50%  Debentures  are issuable in registered  form only without  coupons in
denominations of $1,000 and any integral multiple thereof.

         Subject to and upon  compliance  with the  provisions of the Indenture,
the Holder of this Security is entitled,  at his option,  at any time before the
close of  business  on  November  1, 2004 or in case this  Security or a portion
hereof is called for  redemption or the Holder hereof has exercised his right to
require the Company to  repurchase  this Security or a portion  hereof,  then in
respect of this Security until and including,  but (unless the Company  defaults
in making the payment due upon redemption or repurchase, as the case may be) not
after,  the close of business on the Redemption Date or Repurchase  Date, as the
case may be, to convert this  Security (or any portion of the  principal  amount
hereof that is an integral  multiple of $1,000,  provided  that the  unconverted
portion of such principal amount is $1,000 or any integral multiple of $1,000 in
excess thereof) into fully paid and nonassessable  shares of Common Stock of the
Company at an initial Conversion Rate of 25.2350 shares of Common Stock for each
$1,000  principal  amount of 4.50%  Debentures (or at the then current  adjusted
Conversion  Rate if an adjustment has been made as provided in the Indenture) by
surrender of this Security, duly endorsed or assigned to the Company or in blank
and,  in case such  surrender  shall be made during the period from the close of
business on any Regular Record Date next preceding any Interest  Payment Date to
the opening of business on such  Interest  Payment Date (except if this Security
has been called for  redemption on a Redemption  Date or is  repurchasable  on a
Repurchase Date occurring, in either case, during such period and is surrendered
for such  conversion  during  such period  (including  any 4.50%  Debentures  or
portions  thereof called for  redemption on a Redemption  Date that is a Regular
Record Date or an Interest  Payment Date, as the case may be)), also accompanied
by payment in New York Clearing  House or other funds  acceptable to the Company
of an amount equal to the interest  payable on such Interest Payment Date on the
principal amount of this Security then being converted,  and also the conversion
notice hereon duly executed, to the Company at the Corporate Trust Office of the
Trustee,  or at such other office or agency of the Company,  subject to any laws
or  regulations  applicable  thereto  and subject to the right of the Company to
terminate the  appointment of any Conversion  Agent (as defined below) as may be
designated by it for such purpose in the Borough of  Manhattan,  The City of New
York, or at such other offices or agencies as the Company may designate  (each a
"Conversion Agent"),  provided further,  that if this Security or portion hereof
has been called for  redemption on a Redemption  Date or is  repurchasable  on a
Repurchase Date

                                      -6-



occurring,  in either case,  during the period from the close of business on any
Regular Record Date next  preceding any Interest  Payment Date to the opening of
business  on such  succeeding  Interest  Payment  Date  and is  surrendered  for
conversion  during such  period,  then the Holder of this  Security who converts
this Security or a portion hereof during such period will be entitled to receive
the interest  accruing hereon from the Interest  Payment Date next preceding the
date of such conversion to such succeeding  Interest  Payment Date and shall not
be required to pay such interest upon surrender of this Security for conversion.
Subject  to the  provisions  of the  preceding  sentence  and,  in the case of a
conversion after the close of business on the Regular Record Date next preceding
any  Interest  Payment  Date and on or  before  the  close of  business  on such
Interest  Payment  Date,  to the right of the  Holder of this  Security  (or any
Predecessor  Security of record as of such  Regular  Record Date) to receive the
related  installment  of  interest  to the  extent  and under the  circumstances
provided  in the  Indenture,  no cash  payment  or  adjustment  is to be made on
conversion  for  interest  accrued  hereon from the  Interest  Payment Date next
preceding the day of conversion,  or for dividends on the Common Stock issued on
conversion  hereof. The Company shall thereafter deliver to the Holder the fixed
number of shares of Common Stock (together with any cash adjustment, as provided
in the Indenture) into which this Security is convertible and such delivery will
be deemed to satisfy the Company's  obligation  to pay the  principal  amount of
this Security. No fractions of shares or scrip representing  fractions of shares
will be issued on conversion, but instead of any fractional interest (calculated
to the nearest  1/100th of a share) the Company  shall pay a cash  adjustment as
provided in the  Indenture.  The  Conversion  Rate is subject to  adjustment  as
provided in the Indenture.  In addition, the Indenture provides that in the case
of certain  consolidations  or  mergers  to which the  Company is a party or the
conveyance,  transfer, sale or lease of all or substantially all of the property
and assets of the Company,  the Indenture shall be amended,  without the consent
of any Holders of 4.50% Debentures,  so that this Security, if then Outstanding,
will be  convertible  thereafter,  during  the  period  this  Security  shall be
convertible  as specified  above,  only into the kind and amount of  securities,
cash and other property receivable upon such consolidation,  merger, conveyance,
transfer,  sale or lease by a holder of the number of shares of Common  Stock of
the Company into which this Security could have been converted immediately prior
to such consolidation,  merger,  conveyance,  transfer,  sale or lease (assuming
such holder of Common Stock is not a Constituent Person,  failed to exercise any
rights of election and received per share the kind and amount received per share
by a plurality of  Non-electing  Shares).  No adjustment in the Conversion  Rate
will be made until such  adjustment  would require an increase or decrease of at
least 1% of such  Conversion  Rate,  provided  that any  adjustment  that  would
otherwise  be made  will be  carried  forward  and  taken  into  account  in the
computation of any subsequent adjustment.

         The 4.50%  Debentures  are subject to redemption  upon not less than 20
nor more than 60 days' notice by mail, at any time on or after November 1, 2001,
as a  whole  or in  part,  at the  election  of the  Company,  at the  following
Redemption  Prices  (expressed  as  percentages  of the  principal  amount):  If
redeemed  during  the  12-month  period  beginning  November  1,  of  the  years
indicated,


                                      -7-



                                             Redemption
                  Year                          Price

                  2001                         101.929%
                  2002                         101.286%
                  2003                         100.643%
                  2004                         100.000%


and thereafter at a Redemption Price equal to 100% of the principal  amount,  in
each case  together  with accrued  interest to the  Redemption  Date;  provided,
however, that interest installments whose Stated Maturity is on or prior to such
Redemption Date will be payable to the Holders of such 4.50% Debentures,  or one
or more  Predecessor  Securities,  of  record at the  close of  business  on the
relevant  Record Dates  referred to on the face  hereof,  all as provided in the
Indenture.

         In the event of  redemption,  repurchase or conversion of this Security
in part only, a new Security for the  unredeemed,  unrepurchased  or unconverted
portion  hereof  will be  issued  in the  name of the  Holder  hereof  upon  the
cancellation hereof.

         In any case  where the due date for the  payment of the  principal  of,
premium,  if any, or interest on a Security or the last day on which a Holder of
a Security has a right to convert his Security shall be, at any Place of Payment
or Place of Conversion,  as the case may be, a day on which banking institutions
at such Place of Payment or Place of Conversion  are  authorized or obligated by
law or executive order to close, then payment of principal,  premium, if any, or
interest,  or delivery for conversion of such Security need not be made on or by
such date at such place but may be made on or by the next succeeding day at such
place  which  is not a day on  which  banking  institutions  are  authorized  or
obligated by law or executive order to close,  with the same force and effect as
if made on the  date for  such  payment  or the date  fixed  for  redemption  or
repurchase, or by such last day for conversion,  and no interest shall accrue on
the amount so payable for the period  after such date so long as payment is made
on the next  succeeding  day at such place  which is not a day on which  banking
institutions are authorized or obligated by law or executive order to close.

         If a Change of  Control  occurs,  the Holder of this  Security,  at the
Holder's option,  shall have the right, in accordance with the provisions of the
Indenture, to require the Company to repurchase this Security (or any portion of
the  principal  amount  hereof that equal to $1,000 or any integral  multiple of
$1,000 in excess  thereof) for cash at a  Repurchase  Price equal to 100% of the
principal  amount thereof plus interest  accrued to the Repurchase  Date. At the
option of the Company,  the Repurchase  Price may be paid in cash or, subject to
the conditions provided in the Indenture,  by delivery of shares of Common Stock
having a fair market value equal to the Repurchase  Price.  For purposes of this
paragraph,  the fair market value of shares of Common Stock shall be  determined
by the Company  and shall be equal to 95% of the  average of the Closing  Prices
Per Share for the five  consecutive  Trading  Days ending on and  including  the
third Trading Day immediately  preceding the Repurchase  Date.  Whenever in this
Security  there is a  reference,  in any context,  to the  principal of any such
Security as of any time, such reference shall be deemed

                                      -8-





to include reference to the Repurchase Price payable in respect of such Security
to the extent that such Repurchase  Price is, was or would be so payable at such
time,  and express  mention of the  Repurchase  Price in any  provision  of this
Security shall not be construed as excluding the Repurchase  Price so payable in
those  provisions  of this  Security  when  such  express  mention  is not made;
provided,  however, that, for the purposes of the next paragraph, such reference
shall be deemed to include  reference to the Repurchase Price only to the extent
the Repurchase Price is payable in cash.

         The indebtedness  evidenced by this Security is, to the extent provided
in the  Indenture,  subordinate  and  subject  in right of  payment to the prior
payment in full of all Senior Indebtedness,  and this Security is issued subject
to the  provisions of the Indenture  with respect  thereto.  Each Holder of this
Security,  by  accepting  the  same,  (a)  agrees  to and shall be bound by such
provisions,  (b)  authorizes  and directs the Trustee on his behalf to take such
action as may be necessary or  appropriate to effectuate  the  subordination  so
provided and (c) appoints the Trustee his  attorney-in-fact for any and all such
purposes.

         If an Event of Default shall occur and be continuing,  the principal of
all the 4.50%  Debentures may be declared due and payable in the manner and with
the effect provided in the Indenture.

         The Indenture permits, with certain exceptions as therein provided, the
amendment  thereof and the  modification  of the rights and  obligations  of the
Company  and the  rights  of the  Holders  of the  4.50%  Debentures  under  the
Indenture  at any time by the Company  and the  Trustee  with the consent of the
Holders of not less than a majority in aggregate  principal  amount of the 4.50%
Debentures  at the time  Outstanding.  The Indenture  also  contains  provisions
permitting the Holders of specified percentages in aggregate principal amount of
the 4.50%  Debentures at the time  Outstanding,  on behalf of the Holders of all
the 4.50% Debentures, to waive compliance by the Company with certain provisions
of the  Indenture  and  certain  past  defaults  under the  Indenture  and their
consequences. Any such consent or waiver by the Holder of this Security shall be
conclusive  and  binding  upon such  Holder and upon all future  Holders of this
Security and of any Security issued upon the  registration of transfer hereof or
in exchange hereof or in lieu hereof, whether or not notation of such consent or
waiver is made upon this Security.

         No reference  herein to the Indenture and no provision of this Security
or of the Indenture  shall alter or impair the obligation of the Company,  which
is absolute and unconditional, to pay the principal of (and premium, if any) and
interest on this Security on the respective Stated  Maturities  expressed herein
(or  in the  case  of  redemption  or  repurchase,  on the  Redemption  Date  or
Repurchase  Date, as the case may be) or to convert this Security as provided in
the Indenture.

         As provided  in and subject to the  provisions  of the  Indenture,  the
Holder of this  Security  shall not have the right to institute  any  proceeding
with respect to the Indenture or for the appointment of a receiver or trustee or
for any other remedy thereunder,  unless such Holder shall have previously given
the Trustee written notice of a continuing Event of Default,  the Holders of not
less than 25% in principal amount of the Outstanding 4.50% Debentures shall have
made written request to the Trustee to institute proceedings in respect

                                      -9-





of  such  Event  of  Default  as  Trustee  and  offered  the  Trustee  indemnity
satisfactory to it and the Trustee shall not have received from the Holders of a
majority in principal  amount of the 4.50%  Debentures  Outstanding  a direction
inconsistent  with such  request,  and shall have failed to  institute  any such
proceeding,  for 60 days after  receipt  of such  notice,  request  and offer of
indemnity. The foregoing shall not apply to any suit instituted by the Holder of
this Security for the enforcement of any payment of principal  hereof,  premium,
if any, or interest hereon on or after the respective due dates expressed herein
or for the  enforcement of the right to convert this Security as provided in the
Indenture.

         As provided in the Indenture and subject to certain limitations therein
set  forth,  the  transfer  of this  Security  is  registrable  in the  Security
Register,  upon surrender of this Security for  registration  of transfer at the
office or agency of the Company  maintained for that purpose pursuant to Section
1002,  duly endorsed by, or accompanied  by a written  instrument of transfer in
form  satisfactory  to the Company and the Security  Registrar duly executed by,
the Holder hereof or his attorney duly authorized in writing,  and thereupon one
or more new  4.50%  Debentures,  of  authorized  denominations  and for the same
aggregate  principal  amount,  will be issued to the  designated  transferee  or
transferees.

         No service charge shall be made for any such  registration  of transfer
or exchange,  but the Company may require  payment of a sum  sufficient to cover
any tax or other governmental charge payable in connection therewith.

         Prior to due presentment of this Security for registration of transfer,
the Company,  the Trustee, and any agent of the Company or the Trustee may treat
the Person in whose name this Security is registered as the owner hereof for all
purposes,  whether or not this Security be overdue, and neither the Company, the
Trustee nor any such agent shall be affected by notice to the contrary.

         All terms used in this  Security  which are  defined  in the  Indenture
shall have the meanings assigned to them in the Indenture.




                                      -10-





                                  ABBREVIATIONS


         The following  abbreviations,  when used in the inscription of the face
of this  Security,  shall be  construed  as though they were written out in full
according to applicable laws or regulations:



TEN COM - as tenants in common                  UNIF GIFT MIN ACT--____________
TEN ENT - as tenants by the                                           (Cust)
                entireties                      Custodian ________ under Uniform
JT TEN  - as joint tenants with right                                 Minor)
                of survivorship and not as      Gifts to Minors Act ___________
                tenants in common                                    (State)


                    Additional abbreviations may also be used
                          though not in the above list.

                                      -11-





                  ELECTION OF HOLDER TO REQUIRE REPURCHASE

     1. Pursuant to Section 1501 of the Indenture, the undersigned hereby elects
to have this Security repurchased by the Company.

     2. The  undersigned  hereby directs the Trustee or the Company to pay it or
__________________ an amount in cash or, at the Company's election, Common Stock
valued as set forth in the Indenture,  equal to 100% of the principal  amount to
be  repurchased  (as set forth below),  plus interest  accrued to the Repurchase
Date, as provided in the Indenture.


Dated:

                                               ------------------------------


                                               ------------------------------
                                                 Signature(s)

         Signature(s)  must be guaranteed by an Eligible  Guarantor  Institution
         with membership in an approved signature  guarantee program pursuant to
         Rule 17Ad-15 under the Securities Exchange Act of 1934.


                                               ------------------------------
                                                 Signature Guaranteed


Principal amount to be repurchased
(an integral multiple of $1,000):           _______________________________

Remaining principal amount following such repurchase: ____________________

NOTICE:  The signature to the foregoing  Election must correspond to the Name as
written upon the face of this Security in every particular,  without  alteration
or any change whatsoever.

     3.  Form of  Conversion  Notice.  Article  Two of the  Indenture  is hereby
supplemented  and modified by inserting the following  Section 205 at the end of
such Article.


SECTION 205.      Form of Conversion Notice.

         The undersigned  Holder of this Security hereby  irrevocably  exercises
the option to convert  this  Security,  or any portion of the  principal  amount
hereof (which is an integral  multiple of $1,000,  provided that the unconverted
portion of such principal amount is $1,000

                                      -12-





or any integral  multiple of $1,000 in excess  thereof) below  designated,  into
shares of Common Stock in accordance with the terms of the Indenture referred to
in this Security, and directs that such shares, together with a check in payment
for any fractional share and any 4.50%  Debentures  representing any unconverted
principal  amount  hereof,  be delivered to and be registered in the name of the
undersigned  unless a  different  name has been  indicated  below.  If shares of
Common Stock or 4.50%  Debentures  are to be  registered in the name of a Person
other than the  undersigned,  (a) the  undersigned  will pay all transfer  taxes
payable with  respect  thereto and (b)  signature(s)  must be  guaranteed  by an
Eligible  Guarantor   Institution  with  membership  in  an  approved  signature
guarantee program pursuant to Rule 17Ad-15 under the Securities  Exchange Act of
1934. Any amount  required to be paid by the  undersigned on account of interest
accompanies this Security.


Dated:________________________              _______________________________

Fill in for registration of                 _______________________________
shares of Common Stock if to                Signature(s)
be issued, and 4.50% Debentures if
to be delivered, other than
to and in the name of the
registered holder:

- ------------------------------
                  (Name)


     4. Title and Terms of 4.50% Debentures.  Article Three,  Section 301 of the
Indenture  is hereby  supplemented  and  modified  by  inserting  the  following
language at the end of such Section.

         The  aggregate  principal  amount  of  4.50%  Debentures  which  may be
authenticated  and delivered under this Indenture is limited to $75,000,000,  as
such  amount may be  increased,  but not by an amount in excess of  $11,250,000,
solely as a result of the purchase of additional 4.50%  Debentures  (referred to
in the Underwriting  Agreement as "Optional Securities") pursuant to exercise of
the  underwriters'  over-allotment  option  granted  by the  Company  under  the
underwriting agreement,  dated October 29, 1997 (the "Underwriting  Agreement"),
among the Company,  Goldman,  Sachs & Co.,  J.P.  Morgan & Co., and  PaineWebber
Incorporated  (collectively,  the  "Underwriters"),  except for 4.50% Debentures
authenticated  and delivered  upon  registration  of transfer of, or in exchange
for, or in lieu of, other 4.50%  Debentures  pursuant to Section 304,  305, 306,
906, 1107, 1402 or 1503(e).

         The  4.50%  Debentures  shall be known  and  designated  as the  "4.50%
Convertible  Subordinated Debentures due November 1, 2004" of the Company. Their
Stated  Maturity  shall be November 1, 2004, and they shall bear interest at the
rate of 4.50% per annum,  from November 4, 1997 or from the most recent Interest
Payment Date to which  interest has been paid or duly  provided for, as the case
may be, payable  semi-annually  in arrears on May 1 and November 1 in each year,
commencing May 1, 1998, until the principal thereof is paid

                                      -13-





or made available for payment,  and, to the fullest extent  permitted by law, at
the  rate of  4.50%  per  annum  on any  overdue  principal  and on any  overdue
installment of interest.

         Upon  receipt by the Trustee of an Officers'  Certificate  stating that
the Underwriters have elected to purchase from the Company a specified aggregate
principal amount of Optional Securities not to exceed a total of $11,250,000 for
all  such  elections  in  accordance   with  this  paragraph   pursuant  to  the
Underwriting  Agreement,  the Trustee shall  authenticate and make available for
delivery such specified  aggregate  principal amount of such Optional Securities
to or upon a Company Request,  and such specified  aggregate principal amount of
such  Optional  Securities  shall be considered  part of the original  aggregate
principal amount of the 4.50% Debentures.

         The  principal  of (and  premium,  if any) and  interest  on the  4.50%
Debentures  shall be payable at the office or agency of the  Company  maintained
for such purpose pursuant to Section 1002; provided, however, that at the option
of the Company payment of interest may be made by check mailed to the address of
the  Person  entitled  thereto  as such  address  shall  appear in the  Security
Register.

         The 4.50%  Debentures  shall be redeemable  in accordance  with Article
Eleven at the election of the Company,  as a whole or from time to time in part,
at any time on or after November 1, 2001 at the Redemption  Prices  specified in
the form of Security set forth  herein,  together  with accrued  interest to the
Redemption Date.

         The 4.50%  Debentures  are not  entitled  to the benefit of any sinking
fund.

         The 4.50%  Debentures  shall be  subordinated  in right of  payment  to
Senior Indebtedness as provided in Article Thirteen.

         The 4.50%  Debentures  shall be  convertible  as  provided  in  Article
Fourteen.

         The 4.50%  Debentures  shall be subject to  repurchase at the option of
the Holders upon a Change of Control as provided in Article Fifteen.

          5.   Conversion   of  4.50%   Debentures.   The  Indenture  is  hereby
supplemented and modified by inserting the following Article Fourteen therein.


                                ARTICLE FOURTEEN

                         CONVERSION OF 4.50% DEBENTURES

SECTION 1401.     Conversion Privilege and Conversion Rate.

         Subject to and upon compliance with the provisions of this Article,  at
the option of the Holder  thereof,  any 4.50%  Debenture may be converted at any
time into fully paid and nonassessable  shares (calculated as to each conversion
to the  nearest  1/100th  of a share)  of  Common  Stock of the  Company  at the
Conversion Rate, determined as hereinafter provided,

                                      -14-





in effect at the time of conversion.  Such conversion  right shall expire at the
close of business on November 1, 2004 subject,  in the case of conversion of any
Global  Security,  to any Applicable  Procedures.  In case a 4.50%  Debenture or
portion  thereof is called for  redemption at the election of the Company or the
Holder thereof  exercises his right to require the Company to repurchase a 4.50%
Debenture or portion  thereof,  such  conversion  right in respect of such 4.50%
Debenture,  shall expire (a) at the close of business on the Redemption Date, in
the case of a 4.50%  Debenture  called for  redemption,  and (b) at the close of
business on the Repurchase  Date, in the case of a 4.50% Debenture  tendered for
repurchase,  in each case unless the Company  defaults in making the payment due
upon  redemption or repurchase,  as the case may be, and in each case subject as
aforesaid to any Applicable Procedures with respect to any Global Security.

         The rate at which  shares  of  Common  Stock  shall be  delivered  upon
conversion  (herein  called the  "Conversion  Rate") shall be initially  25.2350
shares of Common Stock for each $1,000 principal amount of 4.50% Debentures. The
Conversion  Rate shall be  adjusted  in certain  instances  as  provided in this
Article.


SECTION 1402.     Exercise of Conversion Privilege.

         In order to exercise the conversion privilege,  the Holder of any 4.50%
Debenture to be converted shall surrender such 4.50% Debenture, duly endorsed or
assigned  to the  Company or in blank,  at any  office or agency of the  Company
maintained  for that  purpose  pursuant  to Section  1002 (any city in which any
Conversion  Agent is  located  being  called  herein a "Place  of  Conversion"),
accompanied by a duly signed  conversion  notice  substantially  in the form set
forth in  Section  205  stating  that the Holder  elects to  convert  such 4.50%
Debenture  or,  if less  than  the  entire  principal  amount  thereof  is to be
converted, the portion thereof to be converted. Each 4.50% Debenture surrendered
for  conversion  (in  whole or in part)  during  the  period  from the  close of
business on any Regular Record Date next preceding any Interest  Payment Date to
the opening of business on such Interest  Payment Date shall (except in the case
of any 4.50%  Debenture or portion  thereof which has been called for redemption
on a Redemption Date, or which is repurchasable on a Repurchase Date, occurring,
in either  case,  within  such  period)  be  accompanied  by payment in New York
Clearing House funds or other funds acceptable to the Company of an amount equal
to the interest payable on such Interest Payment Date on the principal amount of
such 4.50% Debenture (or part thereof, as the case may be) being surrendered for
conversion.  The interest so payable on such Interest  Payment Date with respect
to any 4.50% Debenture (or portion thereof, if applicable) which has been called
for redemption on a Redemption  Date, or is  repurchasable on a Repurchase Date,
occurring,  in either case,  during the period from the close of business on any
Regular Record Date next  preceding any Interest  Payment Date to the opening of
business  on such  Interest  Payment  Date,  which 4.50%  Debenture  (or portion
thereof, if applicable) is surrendered for conversion during such period,  shall
be paid to the Holder of such 4.50% Debenture being converted in an amount equal
to the  interest  that would have been  payable on such 4.50%  Debenture if such
4.50%  Debenture had been converted as of the close of business on such Interest
Payment Date.  The interest so payable on such Interest  Payment Date in respect
of any 4.50%  Debenture (or portion  thereof,  as the case may be) which has not
been called for redemption on a Redemption Date, or is not

                                      -15-





eligible for repurchase on a Repurchase Date, occurring,  in either case, during
the period from the close of business on any Regular  Record Date next preceding
any Interest  Payment Date to the opening of business on such  Interest  Payment
Date,  which  4.50%  Debenture  (or  portion  thereof,  as the  case  may be) is
surrendered  for conversion  during such period,  shall be paid to the Holder of
such 4.50% Debenture as of such Regular Record Date. Interest payable in respect
of any  4.50%  Debenture  surrendered  for  conversion  on or after an  Interest
Payment Date shall be paid to the Holder of such 4.50%  Debenture as of the next
preceding  Regular  Record  Date,  notwithstanding  the exercise of the right of
conversion.  Except  as  provided  in this  paragraph  and  subject  to the last
paragraph of Section 307, no cash payment or  adjustment  shall be made upon any
conversion  on account of any interest  accrued  from the Interest  Payment Date
next preceding the conversion  date, in respect of any 4.50%  Debenture (or part
thereof,  as the case may be) surrendered  for conversion,  or on account of any
dividends on the Common Stock issued upon conversion.  The Company's delivery to
the  Holder  of the  number  of  shares  of  Common  Stock  (and cash in lieu of
fractions  thereof,  as provided in this Indenture) into which a 4.50% Debenture
is  convertible  will be deemed to satisfy the  Company's  obligation to pay the
principal amount of the 4.50% Debenture.

         4.50%  Debentures  shall be deemed to have been  converted  immediately
prior to the close of business on the day of surrender of such 4.50%  Debentures
for conversion in accordance with the foregoing provisions, and at such time the
rights of the Holders of such 4.50%  Debentures as Holders shall cease,  and the
Person or Persons  entitled to receive the Common Stock issuable upon conversion
shall be treated for all purposes as the record holder or holders of such Common
Stock at such time. As promptly as practicable on or after the conversion  date,
the Company shall issue and deliver to the Trustee,  for delivery to the Holder,
a  certificate  or  certificates  for the number of full shares of Common  Stock
issuable  upon  conversion,  together  with payment in lieu of any fraction of a
share, as provided in Section 1403.

         In the case of any 4.50%  Debenture  which is  converted  in part only,
upon  such   conversion   the  Company  shall  execute  and  the  Trustee  shall
authenticate and deliver to the Holder thereof, at the expense of the Company, a
new 4.50%  Debenture  or 4.50%  Debentures  of  authorized  denominations  in an
aggregate  principal  amount equal to the  unconverted  portion of the principal
amount of such 4.50% Debenture.  A 4.50% Debenture may be converted in part, but
only if the  principal  amount of such 4.50%  Debenture  to be  converted is any
integral  multiple of $1,000 and the principal amount of such security to remain
Outstanding after such conversion is equal to $1,000 or any integral multiple of
$1,000 in excess thereof.


SECTION 1403.     Fractions of Shares.

         No fractional shares of Common Stock shall be issued upon conversion of
any 4.50% Debenture or 4.50% Debentures.  If more than one 4.50% Debenture shall
be surrendered for conversion at one time by the same Holder, the number of full
shares which shall be issuable upon conversion  thereof shall be computed on the
basis of the aggregate  principal  amount of the 4.50%  Debentures (or specified
portions  thereof) so  surrendered.  Instead of any  fractional  share of Common
Stock which would otherwise be issuable upon conversion of

                                      -16-





any 4.50% Debenture or 4.50%  Debentures (or specified  portions  thereof),  the
Company shall  calculate  and pay a cash  adjustment in respect of such fraction
(calculated  to the nearest  1/100th of a share) in an amount  equal to the same
fraction of the  Closing  Price Per Share at the close of business on the day of
conversion.


SECTION 1404.     Adjustment of Conversion Rate.

         The Conversion  Rate shall be subject to adjustments  from time to time
as follows:

         (1) In  case  the  Company  shall  pay  or  make a  dividend  or  other
distribution  on any class of capital stock of the Company  payable in shares of
Common Stock,  the  Conversion  Rate in effect at the opening of business on the
day following the date fixed for the  determination of shareholders  entitled to
receive such dividend or other  distribution shall be increased by dividing such
Conversion  Rate by a  fraction  of which the  numerator  shall be the number of
shares of Common  Stock  outstanding  at the close of business on the date fixed
for such  determination  and the denominator  shall be the sum of such number of
shares  and the total  number  of shares  constituting  such  dividend  or other
distribution, such increase to become effective immediately after the opening of
business on the day  following  the date fixed for such  determination.  For the
purposes of this paragraph (1), the number of shares of Common Stock at any time
outstanding  shall not include  shares  held in the  treasury of the Company but
shall include shares issuable in respect of scrip certificates issued in lieu of
fractions  of shares of Common  Stock.  The Company will not pay any dividend or
make any  distribution  on shares of Common  Stock held in the  treasury  of the
Company.

         (2) In case the Company shall issue rights,  options or warrants to all
holders of its Common Stock  entitling them to subscribe for or purchase  shares
of Common  Stock at a price per share  less than the  current  market  price per
share  (determined  as provided in paragraph  (8) of this Section) of the Common
Stock on the date  fixed  for the  determination  of  stockholders  entitled  to
receive such rights,  options or warrants,  the Conversion Rate in effect at the
opening of business on the day following  the date fixed for such  determination
shall be increased by dividing such  Conversion  Rate by a fraction of which the
numerator shall be the number of shares of Common Stock outstanding at the close
of business on the date fixed for such  determination  plus the number of shares
of Common Stock which the aggregate of the offering price of the total number of
shares of Common Stock so offered for subscription or purchase would purchase at
such current market price and the  denominator  shall be the number of shares of
Common  Stock  outstanding  at the close of  business on the date fixed for such
determination  plus  the  number  of  shares  of  Common  Stock so  offered  for
subscription or purchase,  such increase to become effective  immediately  after
the  opening  of  business  on  the  day  following  the  date  fixed  for  such
determination.  For the purposes of this  paragraph (2), the number of shares of
Common  Stock at any time  outstanding  shall  not  include  shares  held in the
treasury of the Company but shall  include  shares  issuable in respect of scrip
certificates  issued in lieu of fractions of shares of Common Stock. The Company
will not issue any  rights,  options or  warrants in respect of shares of Common
Stock held in the treasury of the Company.


                                      -17-





         (3) In case outstanding shares of Common Stock shall be subdivided into
a greater number of shares of Common Stock, the Conversion Rate in effect at the
opening of business  on the day  following  the day upon which such  subdivision
becomes effective shall be proportionately  increased,  and, conversely, in case
outstanding  shares of Common Stock shall each be combined into a smaller number
of shares of Common  Stock,  the  Conversion  Rate in effect at the  opening  of
business  on the day  following  the day upon  which  such  combination  becomes
effective shall be proportionately  reduced, such increase or reduction,  as the
case may be, to become  effective  immediately  after the opening of business on
the day following the day upon which such  subdivision  or  combination  becomes
effective.

         (4) In case the Company shall, by dividend or otherwise,  distribute to
all holders of its Common  Stock  evidences of its  indebtedness,  shares of any
class of capital stock, or other property (including  securities,  but excluding
(i) any  rights,  options  or  warrants  referred  to in  paragraph  (2) of this
Section,  (ii) any dividend or distribution  paid exclusively in cash, (iii) any
dividend or  distribution  referred to in paragraph (1) of this Section and (iv)
any merger or consolidation to which Section 1411 applies),  the Conversion Rate
shall be adjusted so that the same shall equal the rate  determined  by dividing
the Conversion Rate in effect  immediately prior to the close of business on the
date fixed for the  determination  of  stockholders  entitled  to  receive  such
distribution  by a fraction of which the numerator  shall be the current  market
price per share (determined as provided in paragraph (8) of this Section) of the
Common Stock on the date fixed for such  determination  (the  "Reference  Date")
less the then fair market value (as determined by the Board of Directors,  whose
determination shall be conclusive and described in a Board Resolution filed with
the  Trustee) on the  Reference  Date of the  portion of the  assets,  shares or
evidences of indebtedness so distributed applicable to one share of Common Stock
and the  denominator  shall be the current  market price per share of the Common
Stock on the Reference  Date, such  adjustment to become  effective  immediately
prior to the opening of business on the day following the Reference Date.

         (5) In case the Company shall, by dividend or otherwise,  distribute to
all holders of its Common Stock cash  (excluding any cash that is distributed as
part of a  distribution  referred  to in  paragraph  (4) of this  Section) in an
aggregate  amount that,  combined  together with (I) the aggregate amount of any
other cash  distributions to all holders of its Common Stock made exclusively in
cash within the 12 months preceding the date of payment of such distribution and
in respect of which no adjustment  pursuant to this  paragraph (5) has been made
and (II) the aggregate of any cash plus the fair market value (as  determined by
the Board of Directors, whose determination shall be conclusive and described in
a Board  Resolution) of consideration  payable in respect of any tender offer by
the  Company  or any of its  Subsidiaries  for all or any  portion of the Common
Stock  concluded  within  the 12 months  preceding  the date of  payment of such
distribution and in respect of which no adjustment  pursuant to paragraph (6) of
this Section) has been made (the "combined cash and tender amount"), exceeds 10%
of the product of the current market price per share  (determined as provided in
paragraph  (8) of  this  Section)  of the  Common  Stock  on the  date  for  the
determination  of holders of shares of Common  Stock  entitled  to receive  such
distribution times the number of shares of Common Stock outstanding on such date
(the "aggregate current market price"), then, and in each such case, immediately
after the close of business on such date for determination,  the Conversion Rate
shall be adjusted so that the same shall

                                      -18-





equal the rate determined by dividing the Conversion Rate in effect  immediately
prior to the  close of  business  on the date  fixed  for  determination  of the
stockholders  entitled  to  receive  such  distribution  by a  fraction  (i) the
numerator  of which  shall  be  equal to the  current  market  price  per  share
(determined as provided in paragraph (8) of this Section) of the Common Stock on
the date fixed for such  determination  less an amount  equal to the quotient of
(x) the  excess  of such  combined  cash  and  tender  amount  over  10% of such
aggregate  current  market  price  divided by (y) the number of shares of Common
Stock  outstanding on such date for  determination  and (ii) the  denominator of
which  shall be equal to the  current  market  price  per share  (determined  as
provided in paragraph  (8) of this Section) of the Common Stock on such date for
determination.

         (6) In case a tender  offer made by the Company or any  Subsidiary  for
all or any  portion of the Common  Stock shall  expire and such tender  offer or
exchange (as amended upon the  expiration  thereof) shall require the payment to
stockholders  (based on the acceptance (up to any maximum specified in the terms
of the tender  offer) of  Purchased  Shares (as defined  below)) of an aggregate
consideration  having  a fair  market  value  (as  determined  by the  Board  of
Directors,  whose  determination  shall be  conclusive  and described in a Board
Resolution)  that combined  together with (I) the aggregate of the cash plus the
fair market value (as determined by the Board of Directors,  whose determination
shall be conclusive and described in a Board  Resolution),  as of the expiration
of such tender or exchange  offer,  of  consideration  payable in respect of any
other tender or exchange  offer by the Company or any  Subsidiary for all or any
portion  of the  Common  Stock  expiring  within  the 12  months  preceding  the
expiration  of such  tender  or  exchange  offer  and in  respect  of  which  no
adjustment  pursuant to this  paragraph (6) has been made and (II) the aggregate
amount of any cash  distributions  to all holders of the Company's  Common Stock
within 12 months  preceding the  expiration of such tender or exchange offer and
in respect of which no adjustment  pursuant to paragraph (5) of this Section has
been made (the "combined  tender and cash amount") exceeds 10% of the product of
the current  market price per share of the Common Stock  (determined as provided
in paragraph  (8) of this Section) as of the last time (the  "Expiration  Time")
tenders or  exchanges  could have been made  pursuant to such tender or exchange
offer  (as it may be  amended)  times the  number  of  shares  of  Common  Stock
outstanding  (including  any tendered or exchanged  shares) as of the Expiration
Time, then, and in each such case,  immediately prior to the opening of business
on the day after the date of the Expiration  Time, the Conversion  Rate shall be
adjusted  so that the same  shall  equal the rate  determined  by  dividing  the
Conversion  Rate  immediately  prior  to close  of  business  on the date of the
Expiration  Time by a fraction (i) the  numerator of which shall be equal to (A)
the  product  of (I) the  current  market  price per share of the  Common  Stock
(determined  as provided in  paragraph  (8) of this  Section) on the date of the
Expiration  Time  multiplied  by (II) the  number  of  shares  of  Common  Stock
outstanding  (including  any  tendered or  exchanged  shares) on the date of the
Expiration  Time less (B) the  combined  tender  and cash  amount,  and (ii) the
denominator  of which shall be equal to the  product of (A) the  current  market
price per share of the Common Stock  (determined as provided in paragraph (8) of
this Section) as of the Expiration  Time  multiplied by (B) the number of shares
of Common Stock  outstanding  (including any tendered or exchanged shares) as of
the Expiration Time less the number of all shares validly  tendered or exchanged
and not withdrawn as of the Expiration Time (the shares deemed so accepted up to
any such maximum, being referred to as the "Purchased Shares").

                                      -19-






         (7) The  reclassification  of Common Stock into  securities  other than
Common Stock (other than any reclassification  upon a consolidation or merger to
which Section 1411  applies)  shall be deemed to involve (a) a  distribution  of
such securities  other than Common Stock to all holders of Common Stock (and the
effective  date of such  reclassification  shall be deemed to be "the date fixed
for the determination of stockholders entitled to receive such distribution" and
"the date fixed for such  determination"  within the meaning of paragraph (4) of
this Section), and (b) a subdivision or combination,  as the case may be, of the
number  of  shares  of  Common  Stock  outstanding  immediately  prior  to  such
reclassification   into  the  number  of  shares  of  Common  Stock  outstanding
immediately thereafter (and the effective date of such reclassification shall be
deemed to be "the day upon which such subdivision becomes effective" or "the day
upon which such combination becomes effective", as the case may be, and "the day
upon which such subdivision or combination becomes effective" within the meaning
of paragraph (3) of this Section).

         (8) For the purpose of any computation  under  paragraphs (2), (4), (5)
or (6) of this  Section,  the current  market price per share of Common Stock on
any date shall be  calculated  by the Company and be deemed to be the average of
the  daily  Closing  Prices  Per  Share for the five  consecutive  Trading  Days
selected by the Company  commencing  not more than 10 Trading Days  before,  and
ending not later than, the earlier of the day in question and the day before the
"ex"  date  with  respect  to  the  issuance  or  distribution   requiring  such
computation.  For purposes of this  paragraph,  the term "'ex' date",  when used
with respect to any issuance or distribution,  means the first date on which the
Common Stock trades  regular way in the applicable  securities  market or on the
applicable  securities  exchange  without the right to receive such  issuance or
distribution.

         (9) No adjustment in the Conversion  Rate shall be required unless such
adjustment (plus any adjustments not previously made by reason of this paragraph
(9))  would  require  an  increase  or  decrease  of at least  1% in such  rate;
provided,  however,  that any adjustments  which by reason of this paragraph (9)
are not  required to be made shall be carried  forward and taken into account in
any subsequent adjustment.  All calculations under this Article shall be made to
the nearest cent or to the nearest one-hundredth of a share, as the case may be.

         (10) The Company may make such  increases in the  Conversion  Rate, for
the remaining  term of the 4.50%  Debentures or any shorter term, in addition to
those required by paragraphs (1), (2), (3), (4), (5) and (6) of this Section, as
it considers to be advisable in order to avoid or diminish any income tax to any
holders of shares of Common Stock resulting from any dividend or distribution of
stock or issuance of rights or  warrants to purchase or  subscribe  for stock or
from any event treated as such for income tax  purposes.  The Company shall have
the power to resolve any ambiguity or correct any error in this  paragraph  (10)
and its  actions  in so  doing  shall,  absent  manifest  error,  be  final  and
conclusive.



                                      -20-





SECTION 1405.     Notice of Adjustments of Conversion Rate.

         Whenever the Conversion Rate is adjusted as herein provided:

                  (1) the Company shall compute the adjusted  Conversion Rate in
         accordance with Section 1404 and shall prepare a certificate  signed by
         the principal  accounting or financial  officer of the Company  setting
         forth the adjusted Conversion Rate and showing in reasonable detail the
         facts upon which such adjustment is based, and such  certificate  shall
         promptly be filed with the Trustee and with each Conversion Agent; and

                  (2) a  notice  stating  that  the  Conversion  Rate  has  been
         adjusted and setting forth the adjusted Conversion Rate shall forthwith
         be prepared,  and as soon as  practicable  after it is  prepared,  such
         notice  shall be provided by the  Company,  or the Company  shall cause
         such notice to be provided by the Trustee to, all Holders in accordance
         with Section 106.

Neither  the  Trustee  nor any  Conversion  Agent  shall  be  under  any duty or
responsibility  with  respect to any such  certificate  or the  information  and
calculations  contained  therein,  except to  exhibit  the same to any Holder of
4.50%  Debentures  desiring  inspection  thereof  at its  office  during  normal
business hours.


SECTION 1406.     Notice of Certain Corporate Action.

         In case:

                  (a) the  Company  shall  declare  a  dividend  (or  any  other
         distribution)   on  its  Common  Stock  payable  (i)   otherwise   than
         exclusively in cash or (ii) exclusively in cash in an amount that would
         require any adjustment pursuant to Section 1404; or

                  (b) the Company shall authorize the granting to the holders of
         its Common Stock generally of rights,  options or warrants to subscribe
         for or  purchase  any  shares of  capital  stock of any class or of any
         other rights; or

                  (c)  of  any  reclassification  of  the  Common  Stock  of the
         Company, or of any consolidation, merger or share exchange to which the
         Company is a party and for which  approval of any  stockholders  of the
         Company is required,  or of the conveyance,  sale, transfer or lease of
         all or substantially all of the assets of the Company; or

                 (d) of the voluntary or involuntary dissolution, liquidation or
         winding up of the Company; or


                                      -21-





                  (e) the  Company  or any  Subsidiary  shall  commence a tender
         offer  for all or a  portion  of the  Company's  outstanding  shares of
         Common Stock (or shall amend any such tender offer);

then the Company shall cause to be filed, or the Company shall cause the Trustee
to cause to be filed,  at each  office or agency  maintained  for the purpose of
conversion of 4.50%  Debentures  pursuant to Section 1002, and the Company shall
cause to be  provided,  or the  Company  shall  cause the Trustee to cause to be
provided, to all Holders in accordance with Section 106, at least 20 days (or 10
days in any case  specified in clause (a) or (b) above) prior to the  applicable
record, expiration or effective date hereinafter specified, a notice stating (x)
the date on which a record  is to be taken  for the  purpose  of such  dividend,
distribution,  rights,  options or warrants, or, if a record is not to be taken,
the date as of which the  holders of Common  Stock of record to be  entitled  to
such dividend,  distribution,  rights, options or warrants are to be determined,
(y) the date on which the right to make tenders  under such tender offer expires
or  (z)  the  date  on  which  such  reclassification,   consolidation,  merger,
conveyance,  transfer,  sale, lease,  dissolution,  liquidation or winding up is
expected  to  become  effective,  and the date as of which it is  expected  that
holders of Common Stock of record shall be entitled to exchange  their shares of
Common  Stock  for  securities,  cash or other  property  deliverable  upon such
reclassification,  consolidation,  merger,  conveyance,  transfer,  sale, lease,
dissolution,  liquidation or winding up. Neither the failure to give such notice
or the notice  referred to in the  following  paragraph  nor any defect  therein
shall  affect the legality or validity of the  proceedings  described in clauses
(a) through (e) of this Section  1406. If at the time the Trustee shall not be a
Conversion  Agent,  a copy of such notice  shall also  forthwith be filed by the
Company with the Trustee.

         The preceding  paragraph to the contrary  notwithstanding,  the Company
shall cause to be filed,  or the Company  shall cause the Trustee to cause to be
filed,  at each office or agency  maintained  for the purpose of  conversion  of
4.50%  Debentures  pursuant to Section  1002,  and the Company shall cause to be
provided, or the Company shall cause the Trustee to cause to be provided, to all
Holders in  accordance  with  Section  106,  notice of any  tender  offer by the
Company or any Subsidiary for all or any portion of the Common Stock on or after
the time that such notice of tender offer is provided to the public generally.


SECTION 1407.     Company to Reserve Common Stock.

         The Company  shall at all times reserve and keep  available,  free from
preemptive  rights,  out of its  authorized but unissued  Common Stock,  for the
purpose of effecting  the  conversion  of 4.50%  Debentures,  the full number of
shares of Common Stock then  issuable  upon the  conversion  of all  Outstanding
4.50% Debentures.


SECTION 1408.     Taxes on Conversions.

         Except as provided in the next  sentence,  the Company will pay any and
all taxes and duties  that may be payable in respect of the issue or delivery of
shares of Common Stock on conversion of 4.50% Debentures  pursuant  hereto.  The
Company shall not, however, be

                                      -22-





required to pay any tax or duty which may be payable in respect of (i) income of
the holder or (ii) any transfer  involved in the issue and delivery of shares of
Common  Stock in a name other than that of the Holder of the 4.50%  Debenture or
4.50%  Debentures to be converted,  and no such issue or delivery  shall be made
unless and until the Person  requesting  such issue has paid to the  Company the
amount of any such tax or duty, or has  established to the  satisfaction  of the
Company that such tax or duty has been paid.


SECTION 1409.     Covenant as to Common Stock.

         The  Company  agrees  that all  shares  of  Common  Stock  which may be
delivered upon  conversion of 4.50%  Debentures will be newly issued shares and,
upon such delivery,  will have been duly  authorized and validly issued and will
be fully paid and  nonassessable  and,  except as provided in Section 1408,  the
Company will pay all taxes, liens and charges with respect to the issue thereof.


SECTION 1410.     Cancellation of Converted 4.50% Debentures.

         All 4.50% Debentures delivered for conversion shall be delivered to the
Trustee to be  canceled  by or at the  direction  of the  Trustee,  which  shall
dispose of the same as provided in Section 309.


SECTION 1411.     Provision in Case of Consolidation, Merger or Sale of Assets.

         In case of any  consolidation or merger of the Company with or into any
other Person,  any merger of another Person with or into the Company (other than
a merger which does not result in any reclassification,  conversion, exchange or
cancellation  of  outstanding  shares of  Common  Stock of the  Company)  or any
conveyance, sale, transfer or lease of all or substantially all of the assets of
the Company,  the Person  formed by such  consolidation  or resulting  from such
merger or which  acquires  such assets,  as the case may be,  shall  execute and
deliver to the Trustee a  supplemental  indenture  providing  that the Holder of
each 4.50% Debenture then Outstanding  shall have the right  thereafter,  during
the period such 4.50%  Debenture  shall be  convertible  as specified in Section
1401,  to  convert  such  4.50%  Debenture  only  into the kind  and  amount  of
securities, cash and other property receivable upon such consolidation,  merger,
conveyance,  sale,  transfer  or lease by a holder  of the  number  of shares of
Common  Stock of the  Company  into which such 4.50%  Debenture  might have been
converted  immediately prior to such consolidation,  merger,  conveyance,  sale,
transfer or lease,  assuming  such holder of Common  Stock of the Company (i) is
not a Person with which the Company consolidated or merged with or into or which
merged into or with the Company or to which such conveyance,  sale,  transfer or
lease was made, as the case may be ("Constituent  Person"), or an Affiliate of a
Constituent  Person and (ii) failed to exercise his rights of election,  if any,
as to the kind or amount of securities,  cash and other property receivable upon
such consolidation,  merger, conveyance,  sale, transfer or lease (provided that
if the kind or amount of  securities,  cash and other property  receivable  upon
such consolidation, merger, conveyance, sale, transfer, or lease is not the same
for each

                                      -23-





share  of  Common  Stock  of  the  Company  held   immediately   prior  to  such
consolidation,  merger,  conveyance,  sale,  transfer  or lease by others than a
Constituent  Person or an Affiliate  thereof and in respect of which such rights
of election shall not have been exercised  ("Non-electing  Share"), then for the
purpose  of this  Section  the kind and  amount  of  securities,  cash and other
property receivable upon such consolidation,  merger, conveyance, sale, transfer
or lease by the  holders of each  Non-electing  Share  shall be deemed to be the
kind and  amount so  receivable  per share by a  plurality  of the  Non-electing
Shares).  Such supplemental  indenture shall provide for adjustments  which, for
events subsequent to the effective date of such supplemental indenture, shall be
as nearly  equivalent as may be practicable to the  adjustments  provided for in
this Article.  The above  provisions of this Section  shall  similarly  apply to
successive  consolidations,  mergers,  conveyances,  sales, transfers or leases.
Notice of the execution of such a supplemental  indenture  shall be given by the
Company,  or the Company  shall cause the  Trustee to give such  notice,  to the
Holder of each 4.50%  Debenture  as provided in Section 106  promptly  upon such
execution.

         Neither the Trustee, any Paying Agent nor any Conversion Agent shall be
under  any  responsibility  to  determine  the  correctness  of  any  provisions
contained  in any such  supplemental  indenture  relating  either to the kind or
amount of shares of stock or other  securities or property or cash receivable by
Holders of 4.50%  Debentures upon the conversion of their 4.50% Debentures after
any such consolidation,  merger,  conveyance,  transfer, sale or lease or to any
such adjustment, but may accept as conclusive evidence of the correctness of any
such  provisions,  and shall be protected in relying upon, an Opinion of Counsel
with  respect  thereto,  which the Company  shall cause to be  furnished  to the
Trustee upon request.


SECTION 1412.     Responsibility of Trustee for Conversion Provisions.

         The  Trustee,  subject  to the  provisions  of  Article  Six,  and  any
Conversion  Agent shall not at any time be under any duty or  responsibility  to
any Holder of 4.50%  Debentures  to determine  whether any facts exist which may
require any adjustment of the Conversion  Rate, or with respect to the nature or
extent of any such adjustment when made, or with respect to the method employed,
or herein or in any supplemental  indenture  provided to be employed,  in making
the same, or whether a supplemental  indenture need be entered into. Neither the
Trustee,  subject to the  provisions  of Article Six, nor any  Conversion  Agent
shall be  accountable  with  respect  to the  validity  or value (or the kind or
amount) of any Common  Stock,  or of any other  securities  or property or cash,
which may at any time be issued or delivered  upon the  conversion  of any 4.50%
Debenture;  and it or they do not make any representation  with respect thereto.
Neither  the  Trustee,  subject  to the  provisions  of  Article  Six,  nor  any
Conversion  Agent shall be responsible for any failure of the Company to make or
calculate any cash payment or to issue, transfer or deliver any shares of Common
Stock or share  certificates  or other  securities  or property or cash upon the
surrender of any 4.50% Debenture for the purpose of conversion; and the Trustee,
subject to the provisions of Article Six, and any Conversion  Agent shall not be
responsible  for any failure of the Company to comply with any of the  covenants
of the Company contained in this Article.


                                      -24-





     6. Repurchase of 4.50% Debentures. The Indenture is hereby supplemented and
modified by inserting the following Article Fifteen therein.


                                 ARTICLE FIFTEEN

               REPURCHASE OF 4.50% DEBENTURES AT THE OPTION OF THE
                         HOLDER UPON A CHANGE OF CONTROL

SECTION 1501. Right to Require Repurchase.

         In the event that a Change of Control (as  hereinafter  defined)  shall
occur,  then each  Holder  shall have the right,  at the  Holder's  option,  but
subject to the provisions of Section 1502, to require the Company to repurchase,
and upon the exercise of such right the Company  shall  repurchase,  all of such
Holder's 4.50%  Debentures,  or any portion of the principal amount thereof that
is equal to $1,000 or any integral multiple of $1,000 in excess thereof,  on the
date (the  "Repurchase  Date")  that is 45 days  after  the date of the  Company
Notice (as  defined in Section  1503) at a purchase  price  equal to 100% of the
principal amount of the 4.50% Debentures to be repurchased plus interest accrued
to the  Repurchase  Date  (the  "Repurchase  Price");  provided,  however,  that
installments  of interest on 4.50%  Debentures  whose  Stated  Maturity is on or
prior to the  Repurchase  Date  shall be  payable  to the  Holders of such 4.50%
Debentures,  or one or more Predecessor 4.50% Debentures,  registered as such at
the close of business on the relevant  Record Date  according to their terms and
the provisions of Section 307. Such right to require the repurchase of the 4.50%
Debentures  shall  not  continue  after a  discharge  of the  Company  from  its
obligations  with respect to the 4.50%  Debentures  in  accordance  with Article
Four, unless a Change of Control shall have occurred prior to such discharge. At
the option of the Company,  the Repurchase  Price may be paid (i) subject to the
provisions of Section 1502(B) in cash, or (ii) subject to the fulfillment by the
Company of the conditions set forth in Section 1502(A), by delivery of shares of
Common Stock having a fair market value equal to the Repurchase Price; provided,
however,  that  failure  of the  Company  to pay  the  Repurchase  Price  on the
Repurchase  Date either in cash or by  delivery of shares of Common  Stock shall
constitute   an  Event  of  Default  for  purposes  of  Section   501(1)  hereof
notwithstanding  the  Company's  inability to comply with the  provisions  of or
satisfy any  conditions  set forth in Section 1502.  Whenever in this  Indenture
(including  Sections  202,  301,  501(1) and 508) there is a  reference,  in any
context, to the principal of any Security (including, any 4.50% Debenture) as of
any time, such reference shall be deemed to include  reference to the Repurchase
Price  payable in respect of such  Security to the extent  that such  Repurchase
Price is, was or would be so payable at such time,  and  express  mention of the
Repurchase  Price in any provision of this  Indenture  shall not be construed as
excluding the Repurchase  Price in those  provisions of this Indenture when such
express mention is not made; provided, however, that for the purposes of Article
Thirteen such reference  shall be deemed to include  reference to the Repurchase
Price only to the extent the Repurchase Price is payable in cash.



                                      -25-





SECTION 1502.Conditions to the Company's Election to Pay the Repurchase Price in
             Common Stock or Cash.

         (A) The  Company may elect to pay the  Repurchase  Price by delivery of
shares of Common  Stock  pursuant to Section  1501 if and only if the  following
conditions shall have been satisfied:

         (i) The shares of Common Stock deliverable in payment of the Repurchase
Price shall have a fair market value as of the Repurchase  Date of not less than
the  Repurchase  Price.  For purposes of this Section,  the fair market value of
shares of Common Stock shall be  determined by the Company and shall be equal to
95% of the  average of the  Closing  Prices  Per Share for the five  consecutive
Trading Days ending on and including the third Trading Day immediately preceding
the Repurchase Date;

         (ii)  The  shares  of  Common  Stock  deliverable  in  payment  of  the
Repurchase  Price are, or shall have been,  approved for quotation on the Nasdaq
National  Market or are,  or shall  have been,  listed on a national  securities
exchange, in either case, prior to the Repurchase Date; and

         (iii)  All  shares  of  Common  Stock  deliverable  in  payment  of the
Repurchase  Price shall be issued out of the Company's  authorized  but unissued
Common Stock and, will upon issue, be duly and validly issued and fully paid and
nonassessable and free of any preemptive rights.

         If all of the  conditions  set forth in this  Section  1502(A)  are not
satisfied in accordance  with the terms thereof,  the Repurchase  Price shall be
paid by the Company only in cash.

         (B) The  Company may elect to pay the  Repurchase  Price in cash if and
only if on or prior to the  Repurchase  Date there  shall not remain any amounts
outstanding under or with respect to the Senior Indebtedness of the Company.


SECTION 1503.     Notices; Method of Exercising Repurchase Right, Etc.

         (a) Unless the Company shall have theretofore called for redemption all
of the  Outstanding  4.50%  Debentures  or unless all of the  Outstanding  4.50%
Debentures  shall have  theretofore  been  converted in accordance  with Article
Thirteen, on or before the 30th day after the occurrence of a Change of Control,
the  Company or, at the request and expense of the Company on or before the 15th
day after such occurrence, the Trustee, shall give to all Holders, in the manner
provided in Section 106, notice (the "Company  Notice") of the occurrence of the
Change of Control  and of the  repurchase  right set forth  herein  arising as a
result  thereof.  The  Company  shall  also  deliver a copy of such  notice of a
repurchase right to the Trustee.


                                      -26-





         Each notice of a repurchase right shall state:

   (1)      the Repurchase Date,

   (2)      the date by which the repurchase right must be exercised,

   (3)      the Repurchase Price, and whether the Repurchase Price shall be paid
            by the Company in cash or by delivery of shares of Common Stock,

   (4)      a description of the procedure  which a Holder must follow
            to exercise a repurchase right, and the place or places where such
            4.50% Debentures are to be surrendered for payment of the Repurchase
            Price and accrued interest, if any,

   (5)      that  on  the  Repurchase  Date  the  Repurchase   Price, including
            accrued  interest,  if any, will become due and payable upon each
            such 4.50% Debenture designated by the Holder to be repurchased, and
            that interest thereon shall cease to accrue on and after said date,

   (6)      the Conversion Rate then in effect,  the date on which the right to
            convert the  principal  amount of the 4.50%  Debentures  to be
            repurchased will terminate and the place or places where such 4.50%
            Debentures may be surrendered for conversion, and

   (7)      the place or places that the form of certificate  required
            by Section 201 shall be delivered, and the form of such certificate.

         No  failure  of the  Company  to give the  foregoing  notices or defect
therein shall limit any Holder's right to exercise a repurchase  right or affect
the validity of the proceedings for the repurchase of 4.50% Debentures.

         If any of the foregoing  provisions or other provisions of this Article
are inconsistent with applicable law, such law shall govern.

         (b) To  exercise a  repurchase  right,  a Holder  shall  deliver to the
Trustee  or any  Paying  Agent on or  before  the 30th day after the date of the
Company Notice (i) written notice of the Holder's exercise of such right,  which
notice shall set forth the name of the Holder, the principal amount of the 4.50%
Debentures to be repurchased  (and, if any 4.50%  Debenture is to be repurchased
in part, the portion of the principal  amount thereof to be repurchased  and the
name of the Person in which the portion thereof to remain Outstanding after such
repurchase is to be registered) and a statement that an election to exercise the
repurchase  right is being made thereby,  and, in the event that the  Repurchase
Price  shall  be paid in  shares  of  Common  Stock,  the  name or  names  (with
addresses) in which the certificate or  certificates  for shares of Common Stock
shall be  issued,  and (ii) the  4.50%  Debentures  with  respect  to which  the
repurchase right is being  exercised.  Such written notice shall be irrevocable,
except that the right of the Holder to convert the 4.50% Debentures with respect
to which the repurchase  right is being exercised shall continue until the close
of business on the Repurchase Date.

                                      -27-






         (c) In the event a repurchase  right shall be  exercised in  accordance
with the terms hereof,  the Company shall pay or cause to be paid to the Trustee
or the Paying Agent the Repurchase  Price in cash or shares of Common Stock,  as
provided  above,  for payment to the Holder on the Repurchase Date or, if shares
of Common  Stock  are to be paid,  as  promptly  after  the  Repurchase  Date as
practicable,  together with accrued and unpaid  interest to the Repurchase  Date
payable with respect to the 4.50%  Debentures as to which the purchase right has
been exercised;  provided, however, that installments of interest that mature on
or prior to the Repurchase  Date shall be payable in cash to the Holders of such
4.50% Debentures,  or one or more Predecessor  4.50%  Debentures,  registered as
such at the close of business on the relevant  Regular  Record Date according to
the terms and provisions of Section 307.

         (d) If  any  4.50%  Debenture  (or  portion  thereof)  surrendered  for
repurchase  shall  not be so paid on the  Repurchase  Date by the  Company,  the
principal  amount of such 4.50% Debenture (or portion  thereof,  as the case may
be) shall,  until paid, bear interest to the extent  permitted by applicable law
from the  Repurchase  Date at the  rate of  4.50%  per  annum,  and  each  4.50%
Debenture shall remain convertible into Common Stock until the principal of such
4.50% Debenture (or portion thereof, as the case may be) shall have been paid or
duly provided for.

         (e) Any 4.50% Debenture  which is to be repurchased  only in part shall
be surrendered to the Trustee (with,  if the Company or the Trustee so requires,
due endorsement by, or a written  instrument of transfer in form satisfactory to
the Company and the Trustee duly executed by, the Holder thereof or his attorney
duly  authorized  in writing),  and the Company shall  execute,  and the Trustee
shall  authenticate  and make available for delivery to the Holder of such 4.50%
Debenture  without  service charge,  a new 4.50% Debenture or 4.50%  Debentures,
containing identical terms and conditions, each in an authorized denomination in
aggregate  principal  amount  equal  to and in  exchange  for the  unrepurchased
portion of the principal of the 4.50% Debenture so surrendered.

         (f) Any issuance of shares of Common Stock in respect of the Repurchase
Price shall be deemed to have been  effected  immediately  prior to the close of
business on the Repurchase Date and the Person or Persons in whose name or names
any  certificate  or  certificates  for shares of Common Stock shall be issuable
upon such  repurchase  shall be deemed to have become on the Repurchase Date the
holder or  holders  of  record  of the  shares  represented  thereby;  provided,
however,  that any  surrender for  repurchase on a date when the stock  transfer
books of the Company shall be closed shall  constitute  the Person or Persons in
whose name or names the  certificate or  certificates  for such shares are to be
issued as the record  holder or holders  thereof for all purposes at the opening
of business on the next  succeeding  day on which such stock  transfer books are
open. No payment or adjustment  shall be made for dividends or  distributions on
any Common Stock issued upon repurchase of any 4.50% Debenture declared prior to
the Repurchase Date.

         (g) No  fractions of shares  shall be issued upon  repurchase  of 4.50%
Debentures.  If more than one 4.50% Debenture shall be repurchased from the same
Holder and the Repurchase  Price shall be payable in shares of Common Stock, the
number of full  shares  which shall be issuable  upon such  repurchase  shall be
computed on the basis of the aggregate

                                      -28-





principal  amount  of  the  4.50%  Debentures  so  repurchased.  Instead  of any
fractional  share of Common  Stock  which  would  otherwise  be  issuable on the
repurchase of any 4.50% Debenture or 4.50% Debentures,  the Company will deliver
to the  applicable  Holder  its  check  for the  current  market  value  of such
fractional  share.  The  current  market  value  of a  fraction  of a  share  is
determined  by  multiplying  the  current  market  price of a full  share by the
fraction,  and  rounding  the result to the nearest  cent.  For purposes of this
Section,  the  current  market  price of a share of Common  Stock is the Closing
Price Per Share of the Common Stock on the Trading Day immediately preceding the
Repurchase Date.

         (h) Any  issuance  and  delivery of  certificates  for shares of Common
Stock on  repurchase  of 4.50%  Debentures  shall be made without  charge to the
Holder of 4.50%  Debentures being  repurchased for such  certificates or for any
tax or duty in respect of the issuance or delivery of such  certificates  or the
securities represented thereby; provided, however, that the Company shall not be
required to pay any tax or duty which may be payable in respect of (i) income of
the  Holder  or (ii) any  transfer  involved  in the  issuance  or  delivery  of
certificates  for shares of Common Stock in a name other than that of the Holder
of the 4.50%  Debentures  being  repurchased,  and no such  issuance or delivery
shall be made unless and until the Person  requesting  such issuance or delivery
has paid to the Company  the amount of any such tax or duty or has  established,
to the satisfaction of the Company, that such tax or duty has been paid.

         (i) All 4.50% Debentures delivered for repurchase shall be delivered to
the Trustee,  the Paying Agent or any other agents (as shall be set forth in the
Company  Notice) to be canceled by or at the  direction  of the  Trustee,  which
shall dispose of the same as provided in Section 309.


SECTION 1504.     Certain Definitions.

         For purposes of this Article,

     (a) the term "beneficial owner" shall be determined in accordance with Rule
13d-3,  as in effect on the date of the original  execution  of this  Indenture,
promulgated by the Commission pursuant to the Exchange Act;

     (b) a "Change of  Control"  shall be deemed to have  occurred  at the time,
after the original issuance of the 4.50% Debentures, of:

          (i)  the acquisition by any Person of beneficial  ownership,  directly
               or indirectly,  through a purchase,  merger or other  acquisition
               transaction or series of transactions, of shares of capital stock
               of the Company  entitling  such person to exercise 50% or more of
               the total  voting  power of all  shares of  capital  stock of the
               Company  entitled to vote generally in the elections of directors
               (any shares of voting  stock of which such person or group is the
               beneficial  owner  that are not  then  outstanding  being  deemed
               outstanding for purposes of calculating such  percentage),  other
               than any such acquisition by the Company, any Subsidiary

                                      -29-





of the Company or any employee benefit plan of the Company existing on the
date of this Indenture; or

         (ii)  any consolidation or merger of the Company with or into any other
               Person,  any merger of another  Person into the  Company,  or any
               conveyance,  sale, transfer, or lease of all or substantially all
               of the assets (other than (a) any such transaction (x) which does
               not  result  in any  reclassification,  conversion,  exchange  or
               cancellation  of  outstanding  shares  of Common  Stock,  and (y)
               pursuant to which the holders of 50% or more of the total  voting
               power of all shares of capital  stock of the Company  entitled to
               vote  generally in elections  of directors  immediately  prior to
               such  transaction  have the entitlement to exercise,  directly or
               indirectly,  50% or more of the total  voting power of all shares
               of  capital  stock of the  continuing  or  surviving  corporation
               entitled to vote  generally  in  elections  of  directors  of the
               continuing  or  surviving  corporation   immediately  after  such
               transaction  and (b) a merger which is effected  solely to change
               the jurisdiction of incorporation of the Company and results in a
               reclassification, conversion or exchange of outstanding shares of
               Common Stock into solely shares of common stock);

provided, however, that a Change of Control shall not be deemed to have occurred
if the Closing  Price Per Share on any five Trading Days within the period of 10
consecutive  Trading Days ending  immediately after the later of the date of the
Change  of  Control  or the date of the  public  announcement  of the  Change of
Control  (in the case of a Change of  Control  under  Clause  (i)  above) or the
period of 10 consecutive  Trading Days ending  immediately  prior to the date of
the Change of  Control  (in the case of a Change of Control  under  Clause  (ii)
above) shall equal or exceed 105% of the Conversion Price in effect on each such
Trading Day.

   (c)  the term "Conversion Price" shall equal $1,000 divided by the Conversion
Rate; and

         (d) for the purposes of Section  1504(b)(i),  the term  "Person"  shall
include any  syndicate  or group  which  would be deemed to be a "person"  under
Section  13(d)(3) of the Exchange  Act, as in effect on the date of the original
execution of this Indenture.


SECTION 1505.     Consolidation, Merger, Etc.

          In the case of any conveyance,  sale,  transfer,  lease, or merger, to
which Section 1411 applies,  in which the Common Stock of the Company is changed
or  exchanged  as a result  into the right to receive  shares of stock and other
securities  or property or assets  (including  cash)  which  includes  shares of
Common Stock of the Company or common stock of another  person that are, or upon
issuance  will be,  traded on a United States  national  securities  exchange or
approved for trading on an established automated over-the-counter trading market
in the  United  States and such  shares  constitute  at the time such  change or
exchange  becomes  effective in excess of 50% of the aggregate fair market value
of such shares of stock and other  securities,  property  and assets  (including
cash) (as determined by

                                      -30-





the Company,  which  determination  shall be conclusive  and binding),  then the
person formed by such consolidation or resulting from such merger or combination
or which acquires the properties or assets  (including cash) of the Company,  as
the case may be,  shall  execute  and  deliver  to the  Trustee  a  supplemental
indenture  (which shall comply with the Trust  Indenture  Act as in force at the
date of execution of such  supplemental  indenture)  modifying the provisions of
this  Indenture  relating  to the  right of  Holders  to cause  the  Company  to
repurchase  the  4.50%  Debentures  following  a Change of  Control,  including,
without  limitation,   the  applicable   provisions  of  this  Article  and  the
definitions of the Common Stock and Change of Control, as appropriate,  and such
other  related  definitions  set forth herein as determined in good faith by the
Company  (which  determination  shall be conclusive  and binding),  to make such
provisions  apply to the common stock and the issuer  thereof if different  from
the  Company  and Common  Stock of the  Company  (in lieu of the Company and the
Common Stock of the Company).

         7.  Effect  of  Supplemental  Indenture.  This  Supplemental  Indenture
supplements and modifies the Indenture only with respect to, and for purposes of
establishing the characteristics, terms, rights, powers and other conditions of,
the 4.50%  Debentures;  it does not supplement,  modify or otherwise  affect the
Indenture  with respect to any other  Securities.  Upon execution  hereof,  this
Supplemental Indenture shall, upon execution,  supplement and modify, and form a
part of, the Indenture with respect to the 4.50% Debentures  which shall,  where
applicable,  be treated as a series of Securities  for purposes of and under the
Indenture, and the Indenture, as modified by this Supplemental Indenture,  shall
thereafter  be read,  taken and  construed as one and the same  instrument  with
respect to the 4.50% Debentures.

          8. Acceptance by Trustee.  The Trustee accepts the modification of the
Indenture effected by this Supplemental  Indenture,  but only upon the terms and
conditions set forth in the Indenture.

         9. Trust Indenture Act. If and to the extent that any provision of this
Supplemental  Indenture  limits,  qualifies or conflicts with another  provision
included in this Supplemental Indenture or in the Indenture,  which provision is
required to be included in this  Supplemental  Indenture or the Indenture by any
of the provisions of Section 310 to 317,  inclusive,  of the Trust Indenture Act
of 1939, as amended, such required provision of the Trust Indenture Act of 1939,
as amended, shall control.

          10. Governing Law. This Supplemental Indenture shall be deemed to be a
contract made under the laws of the State of New York and for all purposes shall
be governed by and construed in accordance with the laws of such State.








                              --------------------

                                      -31-







         This instrument may be executed in any number of counterparts,  each of
which so executed shall be deemed to be an original,  but all such  counterparts
shall together constitute but one and the same instrument.



                                      -32-





         IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be
duly executed,  and their respective  corporate seals to be hereunto affixed and
attested, all as of the day and year first above written.




                                                     INACOM CORP.


                                               /s/ Dave C. Guenthner
                                          By:_____________________________
[SEAL]                                       Name:    David C. Guenthner
                                             Title:   Executive Vice President
                                                      & Chief Financial Officer
Attest:

/s/ Leon Kerkman

Name:    Leon Kerkman
Title:   Corporate Controller

                                              NORWEST BANK MINNESOTA, NATIONAL
                                              ASSOCIATION, TRUSTEE


                                              By:_____________________________
                                                 Name:
                                                 Title:



                                      -33-