Exhibit 4.04
                            DIGITAL LINK CORPORATION

                        1993 EMPLOYEE STOCK PURCHASE PLAN

                Adopted by the Board of Directors on December 3,
                1993 Amended February 12, 1997, February 8, 1999
                                and June 7, 1999


         1.  Establishment  of Plan.  Digital Link  Corporation  (the "Company")
proposes to grant options for purchase of the Company's Common Stock to eligible
employees of the Company and its Subsidiaries (as hereinafter  defined) pursuant
to this Employee Stock  Purchase Plan (this "Plan").  For purposes of this Plan,
"Parent Corporation" and "Subsidiary" (collectively,  "Subsidiaries") shall have
the same  meanings  as "parent  corporation"  and  "subsidiary  corporation"  in
Sections 424(e) and 424(f), respectively,  of the Internal Revenue Code of 1986,
as amended (the "Code"). The Company intends the Plan to qualify as an "employee
stock purchase plan" under Section 423 of the Code  (including any amendments to
or replacements of such section),  and the Plan shall be so construed.  Any term
not expressly defined in the Plan but defined for purposes of Section 423 of the
Code shall have the same  definition  herein.  A total of 600,000  shares of the
Company's  Common  Stock is reserved for  issuance  under the Plan.  Such number
shall be subject to  adjustments  effected in accordance  with Section 14 of the
Plan.

         2.  Purpose.  The  purpose of the Plan is to provide  employees  of the
Company and  Subsidiaries  designated  by the Board of  Directors of the Company
(the "Board") as eligible to participate in the Plan with a convenient  means of
acquiring  an equity  interest in the Company  through  payroll  deductions,  to
enhance such employees' sense of participation in the affairs of the Company and
Subsidiaries, and to provide an incentive for continued employment.

         3.  Administration.  This  Plan may be  administered  by the Board or a
committee of not less than two members of the Board  appointed to administer the
Plan (the  "Committee").  As used in this Plan,  references  to the  "Committee"
shall  mean  either  such  committee  or the  Board  if no  committee  has  been
established.  Subject  to the  provisions  of the  Plan and the  limitations  of
Section 423 of the Code or any successor provision in the Code, all questions of
interpretation  or  application of the Plan shall be determined by the Board and
its decisions shall be final and binding upon all  participants.  Members of the
Board shall receive no  compensation  for their services in connection  with the
administration of the Plan, other than standard fees as established from time to
time by the  Board for  services  rendered  by Board  members  serving  on Board
committees.  All expenses incurred in connection with the  administration of the
Plan shall be paid by the Company.

         4.  Eligibility.  Any  employee  of the  Company  or  the  Subsidiaries
designated  by the Board as eligible to  participate  in the plan is eligible to
participate in an Offering Period under the Plan except the following:

             (a) employees who are not employed by the Company or  Subsidiaries
one (1) day prior to the beginning of such Offering Period;

             (b) employees who are  customarily  employed for less than 20 hours
per week;

             (c) employees who are  customarily  employed for less than 5 months
in a calendar year;

             (d) employees who, together with any other person whose stock would
be attributed to such employee pursuant to Section 424(d) of the Code, own stock
or hold options to purchase stock or who, as a result of being granted an option
under the Plan with  respect to such  Offering  Period,  would own stock or hold
options to purchase  stock  possessing  5 percent or more of the total  combined
voting  power or  value of all  classes  of stock of the  Company  or any of its
Subsidiaries.

         5.  Offering  Dates.  The Offering  Periods of the Plan (the  "Offering
Period") shall be of 6 months  duration  commencing May 1 and November 1 of each
year and ending on October 31 and April 30  respectively,  during which  payroll
deductions  of the  participant  are  accumulated  under  this  Plan.  The first
Offering Period will begin on May 1, 1994. The first day of each Offering Period
is referred to as the  "Offering  Date".  The last business day of each Offering
Period is referred to as the "Purchase  Date". The Board shall have the power to
change the duration of Offering Periods with respect to future offerings without
stockholder  approval if such change is  announced  at least  fifteen  (15) days
prior to the scheduled beginning of the first Offering Period to be affected.






         6.   Participation   in  the  Plan.   Eligible   employees  may  become
participants  in an Offering  Period under the Plan on the first  Offering  Date
after  satisfying  the  eligibility  requirements  by delivering a  subscription
agreement to the Company's or  Subsidiary's  (whichever  employs such  employee)
treasury department (the "Treasury Department") not later than the one day prior
to such Offering Date unless a later time for filing the subscription  agreement
authorizing  payroll  deductions is set by the Board for all eligible  employees
with  respect to a given  Offering  Period.  An eligible  employee  who does not
deliver a subscription  agreement to the Treasury  Department by such date after
becoming  eligible to participate in such Offering  Period shall not participate
in that Offering  Period or any subsequent  Offering Period unless such employee
enrolls  in the  Plan by  filing a  subscription  agreement  with  the  Treasury
Department not later than one day preceding a subsequent  Offering Date. Once an
employee  becomes a  participant  in an  Offering  Period,  such  employee  will
automatically   participate  in  the  Offering  Period  commencing   immediately
following  the  last  day of the  prior  Offering  Period  unless  the  employee
withdraws  from the Plan or  terminates  further  participation  in the Offering
Period as set forth in Section 11 below.  Such  participant  is not  required to
file any additional subscription agreement in order to continue participation in
the Plan.

         7. Grant of Option on Enrollment. Enrollment by an eligible employee in
the Plan with respect to an Offering Period will constitute the grant (as of the
Offering  Date) by the Company to such  employee of an option to purchase on the
Purchase  Date up to that  number  of  shares  of  Common  Stock of the  Company
determined  by  dividing  the  amount  accumulated  in such  employee's  payroll
deduction  account during such Offering  Period by the lower of (i)  eighty-five
percent (85%) of the fair market value of a share of the Company's  Common Stock
on the Offering Date or (ii) eighty-five  percent (85%) of the fair market value
of a share  of the  Company's  Common  Stock  on the  Purchase  Date;  provided,
however,  that the number of shares of the Company's Common Stock subject to any
option  granted  pursuant  to this Plan  shall not  exceed the lesser of (a) the
maximum  number of shares set by the Board  pursuant to Section 10(c) below with
respect to the applicable  Offering Period,  or (b) 200% of the number of shares
determined  by using 85% of the fair  market  value of a share of the  Company's
Common Stock on the  Offering  Date as the  denominator.  Fair market value of a
share of the Company's Common Stock shall be determined as provided in Section 8
hereof.

         8.  Purchase  Price.  The purchase  price per share at which a share of
Common  Stock  will be sold in any  Offering  Period  shall be 85 percent of the
lesser of:

             (a)  The fair market value on the Offering Date; or

             (b) The fair market value on the Purchase Date.

                For  purposes  of the Plan,  the term "fair  market  value" on a
given date shall mean the fair market  value of the  Company's  Common  Stock as
determined by the Committee from time to time in good faith.  If a public market
exists for the shares,  the fair market value shall be the closing price for the
Common  Stock  of the  Company  on the  last  trading  day  prior to the date of
determination, or, in the event the Common Stock of the Company is listed on the
Nasdaq National Market,  the fair market value shall be the closing price of the
Common Stock on the last trading day prior to the  determination  date as quoted
on the Nasdaq National Market and reported in The Wall Street Journal.

         9. Payment Of Purchase Price;  Changes In Payroll Deductions;  Issuance
Of Shares.

             (a) The  purchase  price of the  shares is  accumulated  by regular
payroll  deductions made during each Offering Period. The deductions are made as
a percentage of the  participant's  compensation  in one percent  increments not
less than 2 percent nor greater than 10 percent,  or such lower limit set by the
Committee.  Compensation  shall  mean base  salary  and  commissions,  excluding
overtime,  shift premiums and bonuses;  provided,  however, that for purposes of
determining a participant's  compensation,  any election by such  participant to
reduce his or her regular cash remuneration  under Sections 125 or 401(k) of the
Code shall be treated as if the participant did not make such election.  Payroll
deductions  shall  commence on the first payday  following the Offering Date and
shall  continue  to the end of the  Offering  Period  unless  sooner  altered or
terminated as provided in the Plan.

             (b) A participant  may lower (but not increase) the rate of payroll
deductions  during an Offering  Period by filing with the Treasury  Department a
new  authorization  for  payroll  deductions,  in which  case the new rate shall
become effective for the next payroll period  commencing more than 15 days after
the Treasury  Department's  receipt of the  authorization and shall continue for
the remainder of the Offering Period unless changed as described below.




Such change in the rate of payroll  deductions may be made at any time during an
Offering  Period,  but not more than one change may be made effective during any
Offering  Period.  A  participant  may  increase or decrease the rate of payroll
deductions  for any  subsequent  Offering  Period  by filing  with the  Treasury
Department a new  authorization  for payroll  deductions not later than the 15th
day of the month before the beginning of such Offering Period.

             (c) All payroll  deductions  made for a participant are credited to
his or her account  under the Plan and are  deposited  with the general funds of
the  Company.  No  interest  accrues  on the  payroll  deductions.  All  payroll
deductions  received  or held by the  Company may be used by the Company for any
corporate  purpose,  and the Company  shall not be obligated  to segregate  such
payroll deductions.

             (d) On each  Purchase  Date,  so long as the Plan remains in effect
and  provided  that the  participant  has not  submitted a signed and  completed
withdrawal form before that date which notifies the Company that the participant
wishes to withdraw from that Offering Period under the Plan and have all payroll
deductions accumulated in the account maintained on behalf of the participant as
of that date returned to the participant, the Company shall apply the funds then
in the  participant's  account to the  purchase of whole  shares of Common Stock
reserved  under the  option  granted  to such  participant  with  respect to the
Offering  Period to the extent that such option is  exercisable  on the Purchase
Date.  The  purchase  price per share shall be as  specified in Section 8 of the
Plan.  Any cash  remaining in a  participant's  account  after such  purchase of
shares  shall  be  refunded  to such  participant  in  cash,  without  interest;
provided,  however, that any amount remaining in such participant's account on a
Purchase  Date which is less than the amount  necessary to purchase a full share
of Common Stock of the Company shall be carried forward,  without interest, into
the next Offering  Period.  In the event that the Plan has been  oversubscribed,
all funds not used to purchase  shares on the Purchase Date shall be returned to
the  participant,  without  interest.  No Common  Stock shall be  purchased on a
Purchase  Date on behalf of any  employee  whose  participation  in the Plan has
terminated prior to such Purchase Date.

             (e) As promptly as practicable after the Purchase Date, the Company
shall arrange the delivery to each participant of a certificate representing the
shares purchased upon exercise of his option.

             (f) During a participant's  lifetime,  such participant's option to
purchase  shares  hereunder is exercisable  only by him or her. The  participant
will have no  interest  or voting  right in shares  covered by his or her option
until such option has been  exercised.  Shares to be delivered to a  participant
under the Plan will be registered in the name of the  participant or in the name
of the participant and his or her spouse.

         10. Limitations on Shares to be Purchased.

              (a) No employee shall be entitled to purchase stock under the Plan
at a rate which,  when aggregated with his or her rights to purchase stock under
all other  employee  stock  purchase  plans of the  Company  or any  Subsidiary,
exceeds  $25,000 in fair market  value,  determined  as of the Offering Date (or
such other limit as may be imposed by the Code) for each  calendar year in which
the employee participates in the Plan.

              (b) No more than 200% of the number of shares  determined by using
85% of the fair market  value of a share of the  Company's  Common  Stock on the
Offering Date as the denominator may be purchased by a participant on any single
Purchase Date.

              (c) No  employee  shall be  entitled  to  purchase  more  than the
Maximum Share Amount (as defined  below) on any single  Purchase  Date. Not less
than thirty days prior to the  commencement  of any Offering  Period,  the Board
may,  in its sole  discretion,  set a  maximum  number  of  shares  which may be
purchased by any employee at any single Purchase Date  (hereinafter the "Maximum
Share  Amount").  In no event shall the Maximum  Share Amount exceed the amounts
permitted  under Section 10(b) above. If a new Maximum Share Amount is set, then
all  participants  must be notified of such  Maximum  Share Amount not less than
fifteen days prior to the  commencement  of the next Offering  Period.  Once the
Maximum  Share  Amount is set, it shall  continue  to apply with  respect to all
succeeding  Purchase  Dates and Offering  Periods unless revised by the Board as
set forth above.

              (d) If the number of shares to be purchased on a Purchase  Date by
all  employees  participating  in the Plan  exceeds  the  number of shares  then
available  for  issuance  under  the  Plan,  the  Company  will  make a pro rata
allocation  of  the  remaining  shares  in as  uniform  a  manner  as  shall  be
practicable and as the Board shall determine to be equitable. In such event, the
Company shall give written  notice of such  reduction of the number of shares to
be purchased under a participant's option to each participant affected thereby.





              (e) Any payroll deductions  accumulated in a participant's account
which are not used to purchase  stock due to the  limitations in this Section 10
shall be returned to the participant as soon as practicable after the end of the
Offering Period, without interest.

         11.  Withdrawal.

              (a) Each  participant  may withdraw from an Offering  Period under
the Plan by signing and delivering to the Treasury  Department  notice on a form
provided for such purpose.  Such  withdrawal may be elected at any time at least
15 days prior to the end of an Offering Period.

              (b)  Upon  withdrawal  from  the  Plan,  the  accumulated  payroll
deductions shall be returned to the withdrawn participant, without interest, and
his or her  interest  in the Plan shall  terminate.  In the event a  participant
voluntarily  elects to withdraw  from the Plan,  he or she may not resume his or
her participation in the Plan during the same Offering Period, but he or she may
participate  in any  Offering  Period  under the Plan which  commences on a date
subsequent  to  such  withdrawal  by  filing  a new  authorization  for  payroll
deductions  in the same manner as set forth above for initial  participation  in
the Plan.

         12.   Termination  of  Employment.   Termination  of  a   participant's
employment  for any  reason,  including  retirement,  death or the  failure of a
participant to remain an eligible  employee,  immediately  terminates his or her
participation in the Plan. In such event, the payroll deductions credited to the
participant's  account  will be returned to him or her or, in the case of his or
her death, to his or her legal representative, without interest. For purposes of
this Section 12, an employee will not be deemed to have terminated employment or
failed to remain in the  continuous  employ of the  Company  in the case of sick
leave,  military  leave,  or any other  leave of absence  approved by the Board;
provided  that such leave is for a period of not more than  ninety  (90) days or
reemployment  upon the  expiration  of such leave is  guaranteed  by contract or
statute.

         13. Return of Payroll Deductions. In the event a participant's interest
in the Plan is terminated by withdrawal, termination of employment or otherwise,
or in the event the Plan is terminated by the Board,  the Company shall promptly
deliver to the participant all payroll  deductions  credited to his account.  No
interest shall accrue on the payroll deductions of a participant in the Plan.

         14. Capital Changes. Subject to any required action by the stockholders
of the  Company,  the number of shares of Common  Stock  covered by each  option
under the Plan  which  has not yet been  exercised  and the  number of shares of
Common Stock which have been authorized for issuance under the Plan but have not
yet been placed  under option  (collectively,  the  "Reserves"),  as well as the
price per share of Common Stock  covered by each option under the Plan which has
not yet been exercised,  shall be  proportionately  adjusted for any increase or
decrease in the number of issued and  outstanding  shares of Common Stock of the
Company  resulting  from a stock split or the payment of a stock  dividend  (but
only on the Common  Stock) or any other  increase  or  decrease in the number of
issued  and  outstanding  shares of Common  Stock  effected  without  receipt of
consideration  by  the  Company;  provided,  however,  that  conversion  of  any
convertible securities of the Company shall not be deemed to have been "effected
without receipt of  consideration."  Such adjustment shall be made by the Board,
whose determination shall be final, binding and conclusive.  Except as expressly
provided  herein,  no issue by the  Company of shares of stock of any class,  or
securities  convertible into shares of stock of any class,  shall affect, and no
adjustment by reason  thereof shall be made with respect to, the number or price
of shares of Common Stock subject to an option.

       In the event of the proposed  dissolution  or liquidation of the Company,
the Offering Period will terminate immediately prior to the consummation of such
proposed action,  unless otherwise  provided by the Board. The Board may, in the
exercise of its sole  discretion  in such  instances,  declare  that the options
under the Plan  shall  terminate  as of a date  fixed by the Board and give each
participant  the right to exercise  his or her option as to all of the  optioned
stock,  including shares which would not otherwise be exercisable.  In the event
of (i) a merger or  consolidation  in which  the  Company  is not the  surviving
corporation   (other  than  a  merger  or  consolidation   with  a  wholly-owned
subsidiary,  a reincorporation  of the Company in a different  jurisdiction,  or
other transaction in which there is no substantial change in the stockholders of
the Company or their relative stock holdings and the options under this Plan are
assumed,  converted or replaced by the successor  corporation,  which assumption
will be binding on all participants),  (ii) a merger in which the Company is the
surviving   corporation  but  after  which  the   stockholders  of  the  Company
immediately  prior to such merger (other than any  stockholder  that merges,  or
which owns or controls another corporation that merges, with the Company in such
merger) cease to own their shares or other equity interest in the Company, (iii)
the  sale of  substantially  all of the  assets  of the  Company,  or  (iv)  the
acquisition, sale, or transfer




of more than 50% of the  outstanding  shares of the  Company by tender  offer or
similar  transaction,  each  option  under  the  Plan  shall  be  assumed  or an
equivalent option shall be substituted by such successor corporation or a parent
or subsidiary of such successor corporation, unless the Board determines, in the
exercise of its sole discretion and in lieu of such assumption or  substitution,
that the  participant  shall have the right to exercise  the option as to all of
the  optioned  stock.  If the  Board  makes  an  option  exercisable  in lieu of
assumption or  substitution in the event of a merger,  consolidation  or sale of
assets,  the Board shall notify the  participant  that the option shall be fully
exercisable  for a period of twenty (20) days from the date of such notice,  and
the option will terminate upon the expiration of such period.

       The  Board  may,  if it  so  determines  in  the  exercise  of  its  sole
discretion, also make provision for adjusting the Reserves, as well as the price
per share of Common Stock covered by each outstanding  option, in the event that
the  Company  effects  one or more  reorganizations,  recapitalizations,  rights
offerings or other increases or reductions of shares of its  outstanding  Common
Stock, or in the event of the Company being consolidated with or merged into any
other corporation.

         15.   Nonassignability.   Neither  payroll  deductions  credited  to  a
participant's account nor any rights with regard to the exercise of an option or
to  receive  shares  under the Plan may be  assigned,  transferred,  pledged  or
otherwise  disposed of in any way (other  than by will,  the laws of descent and
distribution or as provided in Section 22 hereof) by the  participant.  Any such
attempt at assignment,  transfer,  pledge or other disposition shall be void and
without effect.

         16.   Reports.   Individual   accounts  will  be  maintained  for  each
participant in the Plan. Each  participant  shall receive promptly after the end
of each Offering  Period a report of his or her account  setting forth the total
payroll deductions  accumulated,  the number of shares purchased,  the per share
price thereof and the remaining  cash balance,  if any,  carried  forward to the
next Offering Period.

         17. Notice of Disposition. Each participant shall notify the Company if
the participant  disposes of any of the shares  purchased in any Offering Period
pursuant  to this Plan if such  disposition  occurs  within  two years  from the
Offering  Date or within one year from the  Purchase  Date on which such  shares
were purchased (the "Notice  Period").  Unless such  participant is disposing of
any of such shares during the Notice  Period,  such  participant  shall keep the
certificates representing such shares in his or her name (and not in the name of
a nominee)  during the Notice  Period.  The Company  may, at any time during the
Notice Period, place a legend or legends on any certificate  representing shares
acquired pursuant to the Plan requesting the Company's  transfer agent to notify
the Company of any transfer of the shares.  The obligation of the participant to
provide such notice shall  continue  notwithstanding  the  placement of any such
legend on the certificates.

         18. No Rights to Continued Employment.  Neither this Plan nor the grant
of any option  hereunder shall confer any right on any employee to remain in the
employ of the Company or any Subsidiary, or restrict the right of the Company or
any Subsidiary to terminate such employee's employment.

         19. Equal Rights And  Privileges.  All  eligible  employees  shall have
equal rights and privileges  with respect to the Plan so that the Plan qualifies
as an "employee  stock  purchase  plan" within the meaning of Section 423 or any
successor  provision of the Code and the related  regulations.  Any provision of
the Plan which is  inconsistent  with Section 423 or any successor  provision of
the Code shall, without further act or amendment by the Company or the Board, be
reformed to comply with the  requirements  of Section 423. This Section 19 shall
take precedence over all other provisions in the Plan.

         20. Notices.  All notices or other  communications  by a participant to
the Company  under or in  connection  with the Plan shall be deemed to have been
duly given when  received in the form  specified by the Company at the location,
or by the person, designated by the Company for the receipt thereof.

         21. Term; Stockholder Approval. This Plan shall become effective on the
date that it is adopted by the Board of the Company. This Plan shall be approved
by the  stockholders  of the  Company,  in any manner  permitted  by  applicable
corporate  law,  within  twelve  months  before  or after  the date this Plan is
adopted by the Board.  No  purchase  of shares  pursuant to the Plan shall occur
prior to such stockholder approval. The Plan shall continue until the earlier to
occur of termination by the Board, issuance of all of the shares of Common Stock
reserved for issuance under the Plan, or ten (10) years from the adoption of the
Plan by the Board.





         22.  Designation of Beneficiary.

                (a)  A  participant   may  file  a  written   designation  of  a
beneficiary   who  is  to  receive  any  shares  and  cash,  if  any,  from  the
participant's  account under the Plan in the event of such  participant's  death
subsequent to the end of an Offering Period but prior to delivery to him of such
shares and cash. In addition,  a participant may file a written designation of a
beneficiary who is to receive any cash from the participant's  account under the
Plan in the event of such participant's death prior to a Purchase Date.

                (b)  Such  designation  of  beneficiary  may be  changed  by the
participant  at any time by  written  notice.  In the  event  of the  death of a
participant  and in the absence of a beneficiary  validly  designated  under the
Plan who is living at the time of such  participant's  death,  the Company shall
deliver  such shares or cash to the executor or  administrator  of the estate of
the participant,  or if no such executor or administrator has been appointed (to
the knowledge of the Company), the Company, in its discretion,  may deliver such
shares or cash to the spouse or to any one or more  dependents  or  relatives of
the participant, or if no spouse, dependent or relative is known to the Company,
then to such other person as the Company may designate.

         23.  Conditions Upon Issuance of Shares;  Limitation on Sale of Shares.
Shares shall not be issued with respect to an option unless the exercise of such
option and the  issuance  and  delivery of such shares  pursuant  thereto  shall
comply with all applicable  provisions of law,  domestic or foreign,  including,
without  limitation,  the  Securities  Act of 1933, as amended,  the  Securities
Exchange  Act of  1934,  as  amended,  the  rules  and  regulations  promulgated
thereunder,  and the  requirements of any stock exchange or automated  quotation
system upon which the shares may then be listed, and shall be further subject to
the approval of counsel for the Company with respect to such compliance.

         24.  Applicable Law. The Plan shall be governed by the substantive laws
(excluding the conflict of laws rules) of the State of California.

         25.  Amendment or  Termination  of the Plan.  The Board may at any time
amend,  terminate  or the  extend  the term of the  Plan,  except  that any such
termination cannot affect options previously granted under the Plan, nor may any
amendment make any change in an option previously  granted which would adversely
affect  the right of any  participant,  nor may any  amendment  be made  without
approval of the  stockholders of the Company obtained in accordance with Section
21 hereof  within 12 months of the  adoption  of such  amendment  (or earlier if
required by Section 21) if such amendment would:

                (a)  increase the number of shares that may be issued under the
Plan;

                (b)  change  the  designation  of the  employees  (or  class  of
employees) eligible for participation in the Plan.