FIRST ADDENDUM TO LEASE


     This First  Addendum to Lease  ("First  Addendum")  is dated for  reference
purposes  August  18,  1999,  and is made  between  The  Joseph  Pell & Eda Pell
Revocable Trust dated August 18, 1989 ("Landlord") and Adept Technology, Inc., a
California  corporation,  ("Tenant")  to be a part of that  certain  Lease dated
April 30,  1998.  Landlord  and  Tenant  agree  that the Lease is  modified  and
supplemented by this First Addendum.

     Landlord  and Tenant are parties to the Lease  pursuant  to which  Landlord
leased to Tenant and Tenant leased from Landlord  building space.  Tenant wishes
to expand its Premises the Lease is hereby amended as follows:

1.   Premises.  The added premises ("Added  Premises") of  approximately  12,862
     square feet located at 4659 Las Positas Road in the Arroyo Business Park in
     Livermore, California, as shown by Exhibit A attached hereto.

2.   Term.  The term of the Added Premises shall commence on the date the Tenant
     opens  for  business  or 120 days  after the date this  First  Addendum  is
     signed. The length of the term shall be four (4) years.

3.   Base Rent. Tenant agrees to pay Landlord Base Rent as follows:

     Months  1-18     $.94 psf NNN
     Months 19-48    $1.04 psf NNN

     Rent for the first  full  month of the Term  shall be paid by  Tenant  upon
     Tenant's execution of this Lease.

4.   Security Deposit. Upon execution of this First Addendum, Tenant will pay to
     Landlord a Security  Deposit  in the amount of Twelve  Thousand  and Ninety
     Dollars ($12,090.00).

5.   Tenant Improvements:

     A.  Plans and  Specifications.  Tenant  shall have an architect of Tenant's
         choice   ("Architect")   prepare   construction   drawings  and  design
         specifications for the Premises. All such architectural and engineering
         drawings and  specifications are herein referred to as the "Plans." The
         Plans shall be  submitted  to Landlord for  Landlord's  approval  which
         shall be evidenced by Landlord's signing the Plans. Landlord's approval
         shall not be unreasonably  withheld,  delayed or conditioned.  Landlord
         shall have ten (10) business days to review the Plans.

     B.  Selection  of  Contractor.  The  contractor  ("Contractor")  who  shall
         perform the tenant  improvement  work in the Premises shall be selected
         by Tenant.  Landlord  shall have ten (10)  business  days to approve or
         disapprove Tenant's selection of a Contractor, which approval shall not
         be unreasonably withheld,  delayed or conditioned.  Landlord's criteria
         for evaluation of Tenant's Contractor shall include, but not be limited
         to,  reputation  and  quality  of  workmanship,  record  of  completing
         previous  jobs,  relationship  with the City of Livermore  Building and
         Planning

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         Departments,   cooperativeness   in  dealing  with   Landlord  and  its
         employees,   and  financial  strength.  If  Landlord  rejects  Tenant's
         Contractor,  the reasons for the rejection  shall be stated in a letter
         to Tenant. If a Contractor is rejected by Landlord,  another Contractor
         shall be selected  and its name  submitted  in writing  within five (5)
         business days. Each Contractor shall be evaluated by Landlord using the
         criteria stated above.

     C.  Standard  of   Construction.   Contractor  shall  complete  all  tenant
         improvement  work in  accordance  with  the  Plans  and  shall  make no
         alterations,  additions,  or  reinforcements  to the  structure  of the
         Building  except as  specifically  approved  by  Landlord  in  writing.
         Tenant, or Contractor,  at its expense,  shall procure all building and
         other permits  required for completion of Tenant's work.  Tenant agrees
         that all work done by Tenant, its Contractor and  subcontractors  shall
         be performed in full compliance with all laws, rules, orders,  permits,
         ordinances,   directions,   regulations   and   requirements   of   all
         governmental  agencies,  offices,  and departments of all  governmental
         agencies,  offices,  and  departments  having  jurisdiction,  including
         without limitation applicable provisions pertaining to use of hazardous
         or toxic materials and the American with  Disabilities Act, and in full
         compliance  with  the  rules,  orders,   directions,   regulations  and
         requirements   of  the  Board  of  Fire   Underwriters   or  any  other
         organization performing a similar function.

         Landlord shall have the right to enter the Premises at any time to post
         any Notice of Non-Responsibility or other notice on the Premises during
         Tenant's    construction.    Contractor   and   all   contractors   and
         subcontractors  retained by Tenant or Contractor  shall be bondable and
         bonded licensed contractors,  possessing good labor relations, adequate
         financial   strength,   and  have  a  record  of   performing   quality
         workmanship.

         During the course of construction, Tenant shall maintain builder's risk
         insurance in the form and content reasonably  satisfactory to Landlord.
         Tenant's  insurance  shall name Landlord as an  additional  insured and
         shall  provide that it may not be cancelled or amended  without  twenty
         (20) days prior written notice to Landlord. At least seven (7) calendar
         days  prior to  commencement  of  construction,  Tenant  shall  provide
         Landlord  with a  certificate  of such  insurance  and  evidence of any
         required bonds in form satisfactory to Landlord.

         Contractor  shall complete the tenant  improvement  work with diligence
         and in such a manner as not to  interfere  with the use or enjoyment of
         other portions of the Building or adjacent buildings or common areas by
         Landlord or other tenants.  Contractor  shall provide for all temporary
         power,  water and other  utility  facilities  as required in connection
         with the  construction of Tenant's work.  Contractor  shall provide its
         own dumpster for collection and  disposition  of  construction  debris,
         which  shall be located at a location  approved  by  Landlord,  and all
         construction   debris  from  construction   shall  be  disposed  of  in
         Contractor's  dumpster  and not in trash  facilities  for the  Project.
         Contractor's construction materials,

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         tools,  equipment  and debris shall be stored only within the Premises,
         or in areas  designated  for  that  purpose  by  Landlord.  Work  space
         exterior  to the  Premises  shall be  available  only with the  written
         approval of Landlord.  Tenant's  construction  work shall be subject to
         the   inspection   and    supervision   of   Landlord   and   Landlord"
         representative.

     D.  Liability.  Tenant and  Contractor  shall  indemnify  and hold harmless
         Landlord for any and all claims  arising  from  Tenant's  work.  Tenant
         shall  pay for all  damage  to the  Building  or  appurtenant  areas or
         equipment,  as well as all damage to tenants  or  occupants  thereof or
         their  licensees or  invitees,  including,  but not limited to,  losses
         incurred  as  the  result  of  power  outages  caused  by  Tenant's  or
         Contractor's  work in the  Building.  Any such  damages may be deducted
         from the Allowance  (as  hereinafter  defined).  Tenant shall be solely
         responsible   for  the   adequacy   in  all   respects  of  the  tenant
         improvements,   including  without   limitation   compliance  with  all
         governmental  requirements,  compatibility with the Building shell, and
         any special  requirements  of Tenant's  proposed  equipment or machines
         with respect to ambient  temperatures,  electrical  use or current,  or
         water availability.

     E.  Tenant  Improvement  Allowance.  Landlord  shall  contribute,  for  the
         Premises,  an amount equal to the product of Sixteen  Dollars  ($16.00)
         times the square  footage of the Premises (that is,  $205,792.00)  (the
         "Allowance").   The   Allowance   shall   include  all   architectural,
         engineering  and  consultant  fees,  and  all  other  fees  charged  in
         conjunction  with  preparation  of the Plans.  All costs  exceeding the
         Allowance shall be borne by Tenant.

     F.  Disbursement of Allowance.  Once a month, on or before the tenth (10th)
         day of the  month,  Tenant  shall  present to  Landlord  a Request  for
         Disbursement   ("Request  for  Disbursement")   requesting  payment  by
         Landlord  of any  costs  associated  with the  design,  engineering  or
         construction of the tenant  improvements for the Premises.  The Request
         for Disbursement shall include the following information:

         (i) A certificate from Tenant confirming that all of the work contained
         in the Request for  Disbursement  has been completed in accordance with
         the applicable contracts.

         (ii) Unconditional  mechanics lien releases and copies of invoices from
         the  Contractor,  subcontractors,   suppliers  and  materialmen  marked
         "Paid."

         (iii) And such other  reasonable  documentation  as may be requested by
         Landlord  not later than the  twenty-fifth  (25th) day of the  previous
         month.

     G.  Allowance  Payments.  Payment  shall  not be  made on any  Request  for
         Disbursement  until all of the information and  documentation  above is
         complete.  Payment  shall be made only for those  materials  which have
         been installed or which have been  delivered to the Premises.  Landlord
         shall  have  five (5)  calendar  days from the date of  receipt  of the
         Request for Disbursement to review same and

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         request clarification. If Landlord is in Agreement with the Request for
         Disbursement,  payment  shall be made to Tenant within ten (10) days of
         receipt of the Request for  Disbursement.  If any items are in dispute,
         Landlord  shall not make  payment on those  items  until the dispute is
         resolved,  but Landlord shall make payment to Tenant of all amounts not
         in  dispute  within  ten  (10)  days  of  receipt  of the  Request  for
         Disbursement.  Landlord  shall  not  unreasonably  withhold,  delay  or
         condition  its  approval  of any  Request  for  Disbursement  or on any
         specific request for payment made therein. A final disbursement of Five
         Thousand Dollars ($5,000.00) shall be held until all punchlist items in
         the Premises are complete, and the time for the filing of any mechanics
         liens claimed or which might be filed on account of any work  performed
         by Tenant,  Contractor,  subcontractors,  suppliers or materialmen  has
         passed.  Any  damage  to  Landlord's   property  will  be  repaired  to
         Landlord's satisfaction.  Once Landlord has disbursed the entire amount
         of the  Allowance  to  Tenant,  except the final  disbursement  of Five
         Thousand  Dollars  ($5,000.00),  any and all costs  associated with the
         design,  engineering  or  construction  of the  Premises  shall be paid
         directly by Tenant.

8.   Except as set forth  herein, the Lease shall remain  unmodified and in full
     force and effect.  Should  there by any  conflict  between the terms of the
     Lease  and the  terms of this  First  Addendum,  the  terms  of this  First
     Addendum shall control.

     IN WITNESS WHEREOF,  the parties have executed this First Addendum to Lease
as of the date written below.



Landlord:       The Joseph Pell and Eda Pell Revocable
                Trust dated August 18, 1989

                /s/ Karen Pell
                --------------------------------------
                Karen Pell, Trustee

                Date: 9-21-99
                      --------------------------------

Tenant:         Adept Technology, Inc.

                ????????????
                --------------------------------------

                Date: 9-16-99
                      --------------------------------

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                                   EXHIBIT A


          IDENTIFICATION OF THE PREMISES. THE BUILDING AND THE PROJECT

                               [GRAPHIC OMITTED]

                                                               Project

          Premises                                             Building


    Added Premises

                                 First Addendum
                             Arroyo Business Center
                      46O3, 4647, & 4659 Las Positas Road,
                             Livermore, California

                                   Exhibit A