Amendment No. 1 to                                               Dated
Credit Agreement                                             June 21, 1999
                                 AMENDMENT NO. 1
                                       TO
                                CREDIT AGREEMENT

     Amendment  No.  1,  dated  June  21,  1999  (the  "Amendment"),  to  Credit
Agreement, dated as of December 18, 1998 (this "Agreement"),  is entered into by
and among MLC HOLDINGS,  INC., a Delaware corporation  ("Holdings"),  MLC GROUP,
INC.,  a  Virginia  corporation  ("MLC"),  and MLC  FEDERAL,  INC.,  a  Virginia
corporation  ("Federal")  as  borrowers   (collectively,   the  "Borrowers"  and
individually,  a "Borrower"),  the banking institutions  signatories thereto and
named in Exhibit A attached to the  Agreement and such other  institutions  that
hereafter   become  a  "Bank"   pursuant  to  Section  11.4  of  the   Agreement
(collectively,  the "Banks" and individually, a "Bank") and First Union National
Bank, a national banking association, as agent for the Banks under the Agreement
("First  Union,"  which  shall mean its  capacity as agent  unless  specifically
stated otherwise).

                              Preliminary Statement

     WHEREAS,  the  Borrowers,  the Banks and  First  Union  desire to amend the
Agreement in the manner hereinafter set forth.

     NOW, THEREFORE,  in consideration of the premises and promises  hereinafter
set forth and intending to be legally bound hereby,  the parties hereto agree as
follows:

     1. Section 1.1 of Agreement.  The  definition  of "Ordinary  Course Sale or
     ----------------------------
Financing"  in Section 1.1 of the Agreement  shall be and is hereby  amended and
restated to be as follows:

     "Ordinary  Course Sale or  Financing"  shall mean each of the  following to
     occur in the ordinary course of business of any Borrower:

     (a)  the sale  (including  the  installment  or  conditional  sale) by such
          Borrower of Inventory and Equipment so long as such Borrower  receives
          from such sale 100% of the fair market value,  based on equipment sold
          in the ordinary course and not in distress-sale circumstances,  of the
          Inventory and Equipment being sold;

     (b)  the financing  (including  refinancing)  by such Borrower of Inventory
          and Equipment pursuant to this Agreement and the other Loan Documents,
          so long as such Borrower receives from such financing 100% of the fair
          market value,  based on equipment sold in the ordinary  course and not
          in distress-sale  circumstances,  of the Inventory and Equipment being
          financed;  provided,  however,  that  except to the  extent  otherwise
          provided in clause (d) below in connection with the simultaneous  sale
          or  financing of any Lease  described  therein (i) any Lien granted by
          such Borrower to such lender in connection with such financing  (which
          may be a first  priority Lien) shall not attach to any property of any
          Borrower other than the specific financed Inventory and Equipment, and
          (ii) the Debt of such Borrower to such lender in connection  with such
          financing  shall be  without  recourse  to any  Borrower  except  with
          respect to such Borrower's interest in the specific financed Inventory
          and Equipment;

     (c)  the sale by such Borrower of its  ownership  interest in any Inventory
          and Equipment  which has been refinanced in an Ordinary Course Sale or
          Financing described in clause (b) above; and

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     (d)  the sale,  financing  (including  refinancing) by such Borrower of any
          Lease  providing  for the lease of Inventory  and Equipment so long as
          such  Borrower  receives  from such sale or financing  100% of the Net
          Present Value of Lease Payments for the Leases being sold or financed;
          provided,  however,  that, except to the extent otherwise  provided in
          the clause (b) above in connection with the simultaneous  financing of
          Inventory  and Equipment (i) any Lien granted by such Borrower to such
          lender in  connection  with any such  financing  (which may be a first
          priority  Lien) shall not attach to any property of any Borrower other
          than the specific  financed Lease,  and (ii) the Debt of such Borrower
          to such  lender in  connection  with such  financing  shall be without
          recourse  to any  Borrower  except  with  respect  to such  Borrower's
          interest in the specific financed Lease.

     Notwithstanding the foregoing, a financing transaction described in clauses
     (b) or (d)  above  shall  still  qualify  as an  Ordinary  Course  Sale  or
     Financing  even if the Debt of such  Borrower to such lender in  connection
     with such financing is with recourse to such Borrower, as long as the total
     of such recourse financing for all Borrowers, in the aggregate, is not more
     than 15% of the total amount of such  financing in effect for all Borrowers
     at any time under clauses (b) and (d)."

     2. Section 4.3(b) of Agreement. Section 4.3.(b) titled "Landlord's Waivers"
     -------------------------------
shall be deleted and the following shall be and is hereby substituted therefor:

     " (b) Left Intentionally Blank."

     3. Section 5.1(c) of Agreement.  Section  5.1(c) of the Agreement  shall be
     -------------------------------
and is hereby amended and restated to be as follows:

     " (c) Compliance Certificate. Within sixty (60) calendar days after the end
     -----------------------------
of each of the first  three  Fiscal  Quarters of each Fiscal Year and within one
hundred and thirty  (130)  calendar  days after the end of each Fiscal  Year,  a
Compliance  Certificate  signed by the chief  financial  officer or treasurer of
Holdings."

     4. Section 5.1(h) of Agreement.  Section  5.1(h) of the Agreement  shall be
     -------------------------------
and is hereby amended and restated to be as follows:

          "(h) Monthly Accounts  Receivable  Aging Report.  No later than thirty
          ------------------------------------------------
     (30) days after the end of each  calendar  month for the first 11 months of
     each  Fiscal  Year and no later  than sixty (60) days after the end of each
     Fiscal  Year,  an  Accounts  Receivable  Aging  Report  signed by the chief
     financial officer,  treasurer or controller of Holdings. In the case of the
     first two calendar months of each Fiscal Quarter, the information contained
     in this report need not include  Buy/Sell  Contract-Related  Receivables or
     AMC  Receivables  (less than or over 120 days) as  referenced  in Exhibit F
     hereto."

     5. Section 5.1(i) of Agreement.  Section  5.1(i) of the Agreement  shall be
     -------------------------------
and is hereby amended and restated to be as follows:

          " (i)  Quarterly  Residuals  Report.  Within sixty (60)  calendar days
          ------------------------------------
     after the end of each of the first  three  Fiscal  Quarters  of each Fiscal
     Year and within one hundred and thirty (130) calendar days after the end of
     each Fiscal Year, a Residuals Report signed by the chief financial officer,
     treasurer or controller of Holdings."

     6. Section 5.1(j) of Agreement.  Section  5.1(j) of the Agreement  shall be
     -------------------------------
and is hereby amended and restated to be as follows:

     "(j)  Quarterly  Inventory  Report.  No later than sixty (60) calendar days
     -----------------------------------
after the end of each of the first three Fiscal Quarters of each Fiscal Year and
no later than one hundred and thirty (130)  calendar  days after the end of each
Fiscal Year, a Quarterly Inventory Report signed by the chief financial officer,
treasurer or controller of Holdings."

                                      -2-


     7. Section 6.3 of Agreement.  Section 6.3 of the Agreement  shall be and is
     ----------------------------
hereby amended and restated to be as follows:

     "6.3.  Guarantees.   Guarantee  or  otherwise  in  any  way  become  or  be
     ------------------
responsible  for   indebtedness  or  obligations   (including   working  capital
maintenance,  take-or-pay  contracts)  of any other  Person  (including  but not
limited to any Subsidiary of any Borrower),  contingently  or otherwise,  in any
amounts that would exceed an aggregate of $15,000,000 for all Borrowers."

     8. Exhibit D to Agreement;  Amendment to Security  Agreement.  Exhibit D to
     -------------------------------------------------------------
the  Agreement  and the  Security  Agreement  shall be and is hereby  amended by
inserting  the phrase  "Except for the premises  leased at 400 Herndon  Parkway,
Herndon, Virginia," at the beginning of Section 11(A).

     9.  Representations  and  Warranties.  The Borrowers  hereby affirm all the
     -------------------------------------
representations and warranties made in the Agreement,  including but not limited
to Article 3 thereof,  on and as of the date  hereof as if  originally  given on
this date.

     10.  Covenants.  The Borrowers  hereby  confirm that they are in compliance
     ---------------
with and have complied with each and every  covenant set forth in the Agreement,
including but not limited to Articles 5, 6 and 7 thereof,  on and as of the date
hereof.

     11.   Affirmation.   The  Borrowers   hereby  affirm  their   absolute  and
     ------------------
unconditional  promise to pay to each Bank and First  Union  National  Bank,  as
agent  under  the  Agreement,  the Loans  and all  other  amounts  due under the
Agreement  and any other Loan Document on the maturity  date(s)  provided in the
Agreement or any other Loan Document, as such documents may be amended hereby.

     12. Corporate Authorization and Delivery of Documents. Each Bank shall have
     ------------------------------------------------------
received (a) a  certificate  signed by the  secretary or assistant  secretary of
each  Borrower  certifying  all  action  taken by each  Borrower  and any  other
necessary  Person to authorize  this  Amendment,  the  incumbency of the persons
signing this amendment,  and attaching any resolutions  adopted by each Borrower
in connection with said  authorization,  and (b) and such other documents as any
Bank shall require.

     13. Effect of Amendment.  This  Amendment  amends the Agreement only to the
     ------------------------
extent  and in the  manner  herein  set  forth,  and in all other  respects  the
Agreement is ratified and confirmed.

     14.   Counterparts.   This  Amendment  may  be  signed  in  any  number  of
     -------------------
counterparts, each of which shall be an original, with the same effect as if the
signatures hereto were upon the same instrument.


                                      -3-


     IN WITNESS  WHEREOF,  the parties hereto have each caused this Amendment to
be duly executed by their duly authorized  representatives  as of the date first
above written.


                               ePlus inc.

                               By: _______________________
                               Name:
                               Title:

                               MLC GROUP, INC.

                               By: _______________________
                               Name:
                               Title:

                               MLC FEDERAL, INC.

                               By: _______________________
                               Name:
                               Title:


                               FIRST UNION NATIONAL BANK, for itself
                               and as Agent

                               By: ______________________________
                               Name:
                               Title:

                               BANK LEUMI USA

                               By: ______________________________
                               Name:
                               Title:

                               RIGGS BANK N.A.

                               By: ______________________________
                               Name:
                               Title:

                               WACHOVIA BANK, N.A.

                               By: ______________________________
                               Name:
                               Title:

                               SUMMIT BANK

                               By: ______________________________
                               Name:
                               Title:


                               KEYBANK NATIONAL ASSOCIATION

                               By: ______________________________
                               Name:
                               Title:

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