Document:

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                               FIRST AMENDMENT TO
                                CREDIT AGREEMENT

         This Amendment is entered into as of this 29th day of December,
1999, by and between COMERICA BANK, a Michigan banking corporation ("Bank"),
with offices at One Detroit Center, 500 Woodward Avenue, Detroit, Michigan
48226 and SIMPLE TECHNOLOGY, INC., a California corporation ("Company"),
whose principal office is located at 3001 Daimler Street, Santa Ana, CA 92705.

                                    RECITALS:

         A.       On August 3, 1999, the parties entered into a certain
Credit Agreement (the "Agreement") and in connection therewith, Company
executed and delivered to Bank a certain Revolving Note in the principal
amount of $20,000,000 and Canadian Subfacility Note in the principal amount
of CAD $1,000,000 both of even date therewith (collectively, the "Note").

         B.       The parties desire to amend the Agreement, upon the
following terms and conditions.

         NOW THEREFORE, for good and valuable consideration, the parties
agree as follows:

         1.       Section 6.7 of the Agreement is amended and restated in its
entirety as follows:

         "6.7 Cause advance(s) by Borrower to its shareholders not to exceed
in the aggregate $1,400,000 (the "Distribution"); provided, however, that a
portion of the Distribution shall be applied by the shareholders first to
outstanding debts due and owing from XYZ, Inc. and QualCenter to Borrower and
any remaining amount of the Distribution will be earmarked for the benefit of
XYZ, Inc. by the shareholders , and it is agreed that no further advances
shall be distributed by Borrower or its shareholders to XYZ, Inc. and
QualCenter ".

         2.       Section 7.9 of the Agreement is deleted in its entirety.

         3.       Company hereby ratifies and reaffirms the representations,
warranties and covenants set forth in the Agreement.

         4.       Company certifies that no Event of Default or default (as
defined in the Agreement) has occurred and is continuing.

         5.       Company represents and warrants that its Articles of
Incorporation and Bylaws delivered to Bank as of August 3, 1999 in connection
with the Agreement, are in

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full force and effect and have not been modified, repealed or amended since
the date thereof.

         6.       If any provision of this Amendment shall be held invalid or
unenforceable, such invalidity or unenforceability shall affect only such
provision and shall not in any manner affect or render invalid or
unenforceable any other provision of this Amendment, and this Amendment shall
be enforced as if any such invalid or unenforceable provision were not
contained herein.

         7.       Except as specifically amended hereby, the Agreement shall
remain unchanged and shall be in full force and effect, enforceable in
accordance with its terms.

         IN WITNESS WHEREOF, this Amendment has been executed as of the day
first stated above.

                                            SIMPLE TECHNOLOGY, INC.

                                            By: /s/ Manouch Moshayedi

                                            Its:    Chief Executive Officer

                                            COMERICA BANK

                                            By:    /s/ Mark C. Smith

                                            Its:   Vice President

                                      -2-<PAGE>

                               SECOND AMENDMENT TO
                                CREDIT AGREEMENT

         This Second Amendment to Credit Agreement is entered into as of this
19th day of May, 2000, by and between COMERICA BANK, a Michigan banking
corporation ("Bank"), with offices at One Detroit Center, 500 Woodward
Avenue, Detroit, Michigan 48226 and SIMPLE TECHNOLOGY, INC., a California
corporation ("Company"), whose principal office is located at 3001 Daimler
Street, Santa Ana, CA 92705.

                                    RECITALS:

         A.       Bank and Company entered into a certain Credit Agreement
dated as of August 3, 1999 (the "Credit Agreement"), as amended by First
Amendment to Credit Agreement dated as of December 29, 1999 (the "First
Amendment" together with the Credit Agreement, the "Agreement") and in
connection therewith, Company executed and delivered to Bank a certain
Revolving Note in the principal amount of $20,000,000 and Canadian
Subfacility Note in the principal amount of CAD $1,000,000 both of even date
therewith (collectively, the "Note").

         B.       The parties desire to further amend the Agreement, upon the
following terms and conditions.

         NOW THEREFORE, for good and valuable consideration, the parties
agree as follows:

         1.       Section 1.26 of the Agreement is amended and restated in
its entirety as follows:

                  "1.26 "EUROCURRENCY-BASED RATE" shall mean a per annum
         interest rate equal to the Eurocurrency Rate, plus two and
         three-quarters percent (2.75%) per annum."

         2.       Clause (a) of Section 1.42 of the Agreement is amended and
restated in its entirety as follows:

                  "(a)     delivery of desk top appraisals on DRAM and memory
         modules on the first business day of each calendar quarter commencing
         on July 1, 2000;"

         3.       Section 6.1(f) of the Agreement is amended and restated in
its entirety as follows:

                  "(f)     furnish to the Bank, weekly, in form, content and
         reporting basis satisfactory to Bank, a Borrowing Base Report provided,
         however, that during any period when the principal amount of the Loans
         outstanding exceeds eighty percent (80%) of the Facility Maximum then
         in effect such Borrowing Base Reports shall be delivered (together with
         such back-up materials and appraisals as Bank may require) more
         frequently at such intervals as Bank, in its sole discretion, directs."

         4.       Section 6.1(i) of the Agreement is amended to:

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         (a)      substitute the term "quarterly" for "monthly" immediately
                  preceding the phrase "DRAM desktop inventory appraisal
                  updates"; and

         (b)      insert the following at the end of such subsection:

                  "provided, however that during any period when the principal
                  amount of the Loans outstanding exceeds eighty percent (80%)
                  of the Facility Maximum then in effect more frequent reporting
                  may be required at such intervals as Bank, in its sole
                  discretion, directs."

         5.       Company hereby ratifies and reaffirms the representations,
warranties and covenants set forth in the Agreement.

         6.       Company certifies that no Event of Default or default (as
defined in the Agreement) has occurred and is continuing.

         7.       Company represents and warrants that its Articles of
Incorporation and Bylaws delivered to Bank as of March __, 2000 in connection
with the Agreement, are in full force and effect and have not been modified,
repealed or amended since the date thereof.

         8.       If any provision of this Amendment shall be held invalid or
unenforceable, such invalidity or unenforceability shall affect only such
provision and shall not in any manner affect or render invalid or
unenforceable any other provision of this Amendment, and this Amendment shall
be enforced as if any such invalid or unenforceable provision were not
contained herein.

         9.       Except as specifically amended hereby, the Agreement shall
remain unchanged and shall be in full force and effect, enforceable in
accordance with its terms.

         IN WITNESS WHEREOF, this Amendment has been executed as of the day
first stated above.

                                            SIMPLE TECHNOLOGY, INC.

                                            By: /s/ Manouch Moshayedi

                                            Its: Chief Executive Officer

                                            COMERICA BANK

                                            By:      /s/ Mark C. Smith

                                            Its:     Vice President

                                      -2-<PAGE>

                               THIRD AMENDMENT TO
                                CREDIT AGREEMENT

         This Third Amendment to Credit Agreement is entered into as of this
19th day of May, 2000, by and between COMERICA BANK, a Michigan banking
corporation ("Bank"), with offices at One Detroit Center, 500 Woodward
Avenue, Detroit, Michigan 48226 and SIMPLE TECHNOLOGY, INC., a California
corporation ("Company"), whose principal office is located at 3001 Daimler
Street, Santa Ana, CA 92705.

                                    RECITALS:

         A.       Bank and Company entered into a certain Credit Agreement
dated as of August 3, 1999 as amended by a First Amendment to Credit
Agreement and a Second Amendment to Credit Agreement (the "Agreement"),

         B.       The parties desire to further amend the Agreement, upon the
following terms and conditions.

         NOW THEREFORE, for good and valuable consideration, the parties
agree as follows:

         1.       Section 1.29 of the Agreement is hereby amended and
restated in its entirety as follows:

                  "1.29 `Facility Amount' shall mean, as of any date, the lesser
         of (a) the Formula Amount; or (b) $22,500,000 (inclusive of amounts
         advanced under the Canadian Subfacility)."

         2.       Clause (b) of Section 1.31 of the Agreement is hereby
amended and restated in its entirety as follows:

                  "(b) in the case of the Facility the sum (without duplication)
         of (1) eighty percent (80%) of the Eligible Accounts Receivable, plus
         (2) eighty percent (80%) of the Eligible Foreign Accounts Receivable
         not to exceed $3,000,000, plus (3) the lesser of eighty percent (80%)
         of the Orderly Liquidation Value of the Eligible Inventory or
         $12,000,000."

         3.       Company hereby ratifies and reaffirms the representations,
warranties and covenants set forth in the Agreement.

         4.       Company certifies that no Event of Default or Default (as
defined in the Agreement) has occurred and is continuing.

         5.       Company represents and warrants that its Articles of
Incorporation and Bylaws delivered to Bank as of March __, 2000 in connection
with the Agreement, are in full force and effect and have not been modified,
repealed or amended since the date thereof.

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         6.       If any provision of this Amendment shall be held invalid or
unenforceable, such invalidity or unenforceability shall affect only such
provision and shall not in any manner affect or render invalid or
unenforceable any other provision of this Amendment, and this Amendment shall
be enforced as if any such invalid or unenforceable provision were not
contained herein.

         7.       Except as specifically amended hereby, the Agreement shall
remain unchanged and shall be in full force and effect, enforceable in
accordance with its terms.

         8.       This Amendment shall be effective upon (a) delivery to Bank
of this Amendment, executed by an authorized officer of Borrower together
with a duly authorized, executed and delivered Note in the face amount of
Twenty Two Million Five Hundred Thousand Dollars ($22,500,000); (b) payment
to Bank of an amendment fee in the amount of Nine Thousand Three Hundred
Seventy Five Dollars ($9,375), which fee shall be deemed fully earned by Bank
upon its execution of this Amendment and not refundable under any
circumstances.

         9.       Borrower agrees to pay all of Bank's costs and expenses
(including attorneys fees and expenses) incurred in connection with the
Agreement and/or this Amendment within fifteen (15) days of being presented
with an invoice therefor.

         IN WITNESS WHEREOF, this Amendment has been executed as of the day
first stated above.

                                            SIMPLE TECHNOLOGY, INC.

                                            By:      /s/ Manouch Moshayedi

                                            Its:     Chief Executive Officer

                                            COMERICA BANK

                                            By:      /s/ Mark C. Smith

                                            Its:     Vice President

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