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                                                                    EXHIBIT 10.5

                                LOCKUP AGREEMENT

         This Lockup Agreement (this "Agreement") is made and entered into as of
August 20, 2002, by and between Mobility Electronics, Inc., a Delaware
corporation ("Parent"), and Jeff Musa ("Shareholder"). Terms used herein but not
otherwise defined shall have the meanings ascribed thereto in the Merger
Agreement (as defined below).

         WHEREAS, CES Acquisition, Inc., a Texas corporation and wholly-owned
subsidiary of Parent ("Merger Sub"), Parent, Cutting Edge Software, Inc., a
Texas corporation (the "Company"), and Jeff Musa, as the sole shareholder of the
Company, have entered into that certain Agreement and Plan of Merger, of even
date herewith (the "Merger Agreement"), pursuant to which, among other things,
Merger Sub will be merged with and into the Company (the "Merger"); and

         WHEREAS, as a condition to and an inducement to Parent's agreement to
consummate the Merger, Shareholder has agreed to enter into this Agreement; and

         WHEREAS, the agreements of Shareholder contained herein are an
important aspect of the Merger, and Parent would not have entered into the
Merger Agreement absent the covenant contained therein providing for the
execution by Shareholder of this Agreement.

         NOW, THEREFORE, for and in consideration of the agreements and other
good and valuable consideration, the receipt and adequacy of which are hereby
acknowledged, the parties agree as follows:

         1. Lockup. Without the prior written consent of Parent, Shareholder
agrees not to, directly or indirectly, offer, sell, contract to sell, grant any
option to purchase, hypothecate, pledge, grant any rights with respect to or
otherwise dispose of (each, a "Transfer") the following shares of Parent Common
Stock acquired by Shareholder pursuant to the Agreement and Plan of Merger (the
"Locked Up Shares"):

                  (a) 597,295, which shares represent seventy-five percent (75%)
of the Shares, during the first ninety (90) day period from and after from the
Effective Date;

                  (b) 398,197, which shares represent fifty percent (50%) of the
Shares, during the second ninety (90) day period from and after from the
Effective Date; and

                  (c) 199,098, which shares represent twenty-five percent (25%)
of the Shares, during the third ninety (90) day period from and after from the
Effective Date.

         Notwithstanding the foregoing, Shareholder may Transfer all or any
portion of the Locked Up Shares in a private transaction or a series of private
transactions if the transferee or transferees execute an agreement with Parent
(which agreement shall be reasonably satisfactory to Parent) to the effect that
the Locked Up Shares shall be subject to the restrictions set forth in this
Agreement. Shareholder agrees and consents to the entry of stop transfer
instructions with the transfer agent for the Parent Common Stock against the
transfer of the Locked Up Shares

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held by Shareholder except in compliance with the foregoing restrictions.
Shareholder is aware that Parent is relying upon this Agreement in entering into
the Agreement and Plan of Merger.

         2. Governing Law. This Agreement shall be governed by, and construed in
accordance with, the laws of the State of Delaware, without regard to its choice
of law principles.

         3. Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original and all of which shall
constitute one and the same instrument, but only one of which need be produced.

         IN WITNESS WHEREOF, the parties have executed this Agreement as of the
date first set forth above.

                                                 MOBILITY ELECTRONICS, INC.

                                                 By: /S/ Charles R. Mollo
                                                       Charles R. Mollo,
                                                       Chief Executive Officer

                                                 /S/ Jeff Musa
                                                       Jeff Musa

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                                                                    EXHIBIT 10.6

                               PURCHASE AGREEMENT

         This Purchase Agreement (this "Agreement"), dated as of November __,
2002, is entered into by and between Richard C. Liggitt ("Liggitt") and Mobility
Electronics, Inc., a Delaware corporation ("Mobility"). Each of the parties
hereto is sometimes referred to herein as a "Party", and collectively, as the
"Parties".

         1. Background. Mobility, Portsmith, Inc., a Delaware corporation ("Old
Portsmith"), certain stockholders of Old Portsmith and Mobility Europe Holdings,
Inc., a Delaware corporation and wholly-owned subsidiary of Mobility ("New
Portsmith"), are parties to that certain Agreement and Plan of Merger, dated as
of February 20, 2002 (the "Merger Agreement"). Pursuant to the terms of the
Merger Agreement, among other things, Old Portsmith was merged with and into New
Portsmith and the stockholders of Old Portsmith (the "Stockholders") received an
aggregate of 800,000 shares of the common stock, par value $0.01 per share, of
Mobility (the "Common Stock"), of which 400,000 shares are currently held in
escrow by Jackson Walker L.L.P. ("JW") under a Stock Escrow Agreement, dated as
of February 20, 2002, by and among Mobility, JW and Holmes Lundt as the
representative of certain persons listed on Schedule I thereto (the "Escrow
Agreement"). In addition, pursuant to the terms of the Merger Agreement, the
Stockholders are entitled to receive under the Merger Agreement a Performance
Earn Out (as defined in the Merger Agreement) and a Revenue Earn Out (as defined
in the Merger Agreement). Under the Merger Agreement, Liggitt, as a Stockholder,
has received 53,647 shares of Common Stock (the "Liggitt Held Stock"), is
entitled to receive up to 53,646 shares of Common Stock held by JW under the
Escrow Agreement (the "Liggitt Escrowed Stock"), is entitled to receive
6.1156748% (the "Liggitt Earn Out Share") of the 45.6000000% Performance Earn
Out which may be paid under the Merger Agreement, and is entitled to receive
13.4115675% (the "Liggitt Revenue Share") of the 100.0000000% Revenue Earn Out
which may be paid under the Merger Agreement (collectively and together with any
and all rights, titles and interests related thereto, the "Liggitt Interests").

         2. Sale of the Liggitt Interests. Liggitt hereby sells, assigns and
transfers to Mobility the Liggitt Interests, in consideration for which Mobility
shall issue to Liggitt a Convertible Subordinated Promissory Note, in the
original principal amount of $990,000.00, and otherwise in the form of Exhibit A
attached hereto (the "Promissory Note"). Contemporaneously with the execution
and delivery of the Promissory Note, Liggitt shall deliver to Mobility a stock
certificate representing the Liggitt Held Stock, either endorsed over to
Mobility or with appropriate stock powers, executed in blank. The Parties also
agree that: (i) the Merger Agreement shall be amended to reflect the assignment
from Liggitt to Mobility of the Liggitt Escrowed Stock, the Liggitt Earn Out
Shares and the Liggitt Revenue Shares; and (ii) the Escrow Agreement shall be
amended to reflect the assignment from Liggitt to Mobility of the Liggitt
Escrowed Stock.

         3. Representations and Warranties of the Parties.

            (a) Liggitt hereby represents, warrants and covenants to Purchaser
as follows:

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                (i) this Agreement is a legal, valid and binding obligation of
            Liggitt, enforceable against Liggitt in accordance with its terms;

                (ii) Liggitt is the legal and beneficial owner of the Liggitt
            Interests, free and clear of any liens, claims or encumbrances;

                (iii) Liggitt has the right, power and authority to execute and
            deliver this Agreement and to consummate the transactions set forth
            herein;

                (iv) the delivery of the Liggitt Interests to Mobility will
            convey to Mobility legal, valid and marketable title to the Liggitt
            Interests, free and clear of all liens, security interests, or
            other encumbrances of any character whatsoever; and

                (v) Liggitt is an "accredited investor" within the meaning of
            Rule 501(a) of Regulation D under the Securities Act of 1933, as
            amended. Liggitt, by reason of his business and/or financial
            experience, can be reasonably assumed to have the capacity to
            protect his own interests in connection with this transaction.

            (b) Mobility hereby represents, warrants and covenants to Liggitt as
follows:

                (i) this Agreement and the Promissory Note are legal, valid and
            binding obligations of Mobility, enforceable against Mobility in
            accordance with their respective terms;

                (ii) Mobility has the right, power and authority to execute and
            deliver this Agreement and the Promissory Note and to consummate the
            transactions set forth herein and therein; and

                (iii) Mobility has reserved from its authorized but unissued
            shares of Common Stock sufficient shares to be issued upon
            conversion of the Promissory Note.

            (c) THE PARTIES ACKNOWLEDGE THAT THEY HAVE HAD THE OPPORTUNITY TO
OBTAIN, AND HAVE OBTAINED, ADVICE ON THE TERMS OF THIS AGREEMENT FROM
INDEPENDENT LEGAL COUNSEL RETAINED TO REPRESENT THEM IN THIS MATTER AND ARE
EXERCISING THEIR OWN INDEPENDENT JUDGMENT IN EXECUTING THIS AGREEMENT. EACH OF
THE PARTIES HAS CONDUCTED ITS OWN ANALYSIS REGARDING, AND DUE DILIGENCE
CONCERNING, THIS AGREEMENT, AND IN THE CASE OF LIGGITT, THE COMPANY, INCLUDING
WITHOUT LIMITATION, ITS FINANCIAL CONDITION AND OPERATIONS. ALTHOUGH ONE PARTY
OR THE OTHER MAY HAVE PREPARED CERTAIN OF THE LANGUAGE IN THIS AGREEMENT, THIS
AGREEMENT IS THE PRODUCT OF ARMS-LENGTH NEGOTIATIONS BETWEEN SOPHISTICATED
PARTIES. EACH PARTY WAIVES ANY RULE OF CONTRACT CONSTRUCTION WHEREBY AN
AMBIGUITY WOULD BE CONSTRUED AGAINST THE DRAFTING PARTY.

            (d) THE PARTIES FURTHER EACH WARRANT AND REPRESENT THAT NO PROMISE
OR INDUCEMENT HAS BEEN OFFERED EXCEPT AS SET FORTH HEREIN. THIS AGREEMENT IS
EXECUTED WITHOUT RELIANCE UPON ANY ORAL, WRITTEN, EXPRESS OR IMPLIED
REPRESENTATIONS, STATEMENTS, PROMISES, WARRANTIES OR OTHER INDUCEMENT OF ANY
NATURE OR SORT MADE BY ANY PERSON OR PARTY OTHER THAN AS IS EXPRESSLY SET FORTH
IN THIS AGREEMENT, THE PROMISSORY NOTE AND THE SETTLEMENT AGREEMENT

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(AS DEFINED IN SECTION 4 BELOW). EACH OF THE PARTIES AGREES THAT ANY OMISSIONS
OF FACTS CONCERNING THE MATTERS COVERED BY THIS AGREEMENT ARE OF NO CONSEQUENCE
IN THE DETERMINATION TO EXECUTE THIS AGREEMENT.

         4. Entire Agreement. This Agreement, the Promissory Note and the
Compromise Settlement Agreement, dated ________, 2002, by and among Liggitt, the
Company and certain other persons and entities (the "Settlement Agreement"),
contains the entire agreement among the Parties with respect to the transactions
contemplated herein, and supercedes all prior agreements, written or oral, and
letters with respect hereto. This Agreement may be amended or superseded, and
the terms and conditions hereof may be waived only by a written instrument
signed by each of the Parties, or, in the case of a waiver, by the Party waiving
compliance.

         5. Governing Law and Venue. THIS AGREEMENT SHALL BE GOVERNED AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF CALIFORNIA. The Parties
agree that any action arising from this Agreement shall be filed in the Superior
Court of the State of California, County of Orange, and the Parties further
agree to submit to the jurisdiction of that Court.

         6. Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be an original, but all of which together
shall be considered one and the same instrument.

         IN WITNESS WHEREOF, the Parties have executed this Agreement on the
date first written above.

                                               MOBILITY ELECTRONICS, INC.

                                               By:
                                                  ------------------------------

                                               ---------------------------------

                                               ---------------------------------
                                                   Richard C. Liggitt

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