Exhibit 4.3

                         Form of Face of 4.50% Debenture

         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,  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

CUSIP Number 45323G AC 3                                            $75,000,000

         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 CEDE & CO.,  or  registered  assigns,  the  principal  sum of
Seventy-Five  Million  Dollars  ($75,000,000)  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 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]
                                          /s/ David C. Guenthner
                                    By:   ____________________________
                                          Title:   Executive Vice President
                                                   & Chief Financial Officer
                                          Name:  David C. Guenthner

Attest:

/s/ Leon Kerkman
- ------------------------------
Title:   Corporate Controller
Name:    Leon Kerkman


                                      





                       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 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

                                      -1-





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
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.


                                      -2-





         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,

                                                   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%

                                      -3-





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 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

                                      -4-





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 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.




                                      -5-





                                  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.

                                      -6-




                  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.



                                      -7-