ASSUMPTION AGREEMENT

Exhibit 10.4

ASSUMPTION AGREEMENT

ASSUMPTION AGREEMENT, dated as of July 27, 2012, made by VARSITY AP HOLDING CORPORATION, a Georgia corporation, GCP AMERIFILE COINVEST INC., a Delaware corporation, VARSITY AP HOLDINGS LLC, a Delaware limited liability company, AMERIFILE, LLC, a Delaware limited liability company, PEACHTREE BUSINESS PRODUCTS, LLC, a Delaware limited liability company, and AP RE LLC, a Georgia limited liability company (each, an “Additional Grantor”), in favor of BANK OF AMERICA, NA., as collateral agent and administrative agent (in such capacity, the “Collateral Agent”) for the banks and other financial institutions (the “Lenders”) from time to time parties to the Credit Agreement referred to below and the other Secured Parties (as defined below). All capitalized terms not defined herein shall have the meaning ascribed to them in such the Guarantee and Collateral Agreement referred to below, or if not defined therein, in the Credit Agreement.

W I T N E S S E T H :

WHEREAS, HD Supply, Inc., a Delaware corporation (the “Borrower”), Bank of America, N.A., as administrative agent and collateral agent, and the Lenders are parties to a Credit Agreement, dated as of April 12, 2012 (as amended, supplemented, waived or otherwise modified from time to time, the “Credit Agreement”);

WHEREAS, in connection with the Credit Agreement, the Borrower and certain of its Subsidiaries are, or are to become, parties to the Guarantee and Collateral Agreement, dated as of April 12, 2012 (as amended, supplemented, waived or otherwise modified from time to time, the “Guarantee and Collateral Agreement”), in favor of the Collateral Agent, for the benefit of the Secured Parties (as defined in the Guarantee and Collateral Agreement);

WHEREAS, each Additional Grantor is a member of an affiliated group of companies that includes the Borrower and each other Grantor; the proceeds of the extensions of credit under the Credit Agreement will be used in part to enable the Borrower to make valuable transfers to one or more of the other Grantors (including each Additional Grantor) in connection with the operation of their respective businesses; and the Borrower and the other Grantors (including each Additional Grantor) are engaged in related businesses, and each such Grantor (including each Additional Grantor) will derive substantial direct and indirect benefit from the making of the extensions of credit under the Credit Agreement;

WHEREAS, the Credit Agreement requires each Additional Grantor to become a party to the Guarantee and Collateral Agreement; and

WHEREAS, each Additional Grantor has agreed to execute and deliver this Assumption Agreement in order to become a party to the Guarantee and Collateral Agreement;

NOW, THEREFORE, IT IS AGREED:

1. Guarantee and Collateral Agreement. By executing and delivering this Assumption Agreement, each Additional Grantor, as provided in subsection 9.15 of the Guarantee and Collateral Agreement, hereby becomes a party to the Guarantee and Collateral Agreement as a Guarantor, Grantor and, except for AP RE LLC, Pledgor thereunder with the same force and effect as if originally named therein as a Guarantor, Grantor and, except for AP RE LLC, Pledgor and, without limiting the generality of the foregoing, hereby expressly assumes all obligations and liabilities of a Guarantor, Grantor and, except for AP RE LLC, Pledgor thereunder. The information set forth in Annex 1-A hereto is hereby added to the information set forth in Schedules 1, 2, 3, 4 and 5 to the Guarantee and Collateral Agreement, and

such Schedules are hereby amended and modified to include such information. Each Additional Grantor hereby represents and warrants that each of the representations and warranties of such Additional Grantor, in its capacities as a Guarantor, Grantor and, except for AP RE LLC, Pledgor, contained in Section 4 of the Guarantee and Collateral Agreement is true and correct in all material respects on and as the date hereof (after giving effect to this Assumption Agreement) as if made on and as of such date. Each Additional Granting Party hereby grants, as and to the same extent as provided in the Guarantee and Collateral Agreement, to the Collateral Agent, for the benefit of the Secured Parties, a continuing security interest in the Collateral (as such term is defined in Section 3.1 of the Guarantee and Collateral Agreement) and, except for AP RE LLC, the Pledged Collateral (as such term is defined in the Guarantee and Collateral Agreement) of such Additional Granting Party, except as provided in Section 3.3 of the Guarantee and Collateral Agreement.

2. GOVERNING LAW. THIS ASSUMPTION AGREEMENT AND THE RIGHTS AND OBLIGATIONS OF THE PARTIES UNDER THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED AND INTERPRETED IN ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK WITHOUT GIVING EFFECT TO ITS PRINCIPLES OR RULES OF CONFLICT OF LAWS TO THE EXTENT SUCH PRINCIPLES OR RULES ARE NOT MANDATORILY APPLICABLE BY STATUTE AND WOULD REQUIRE OR PERMIT THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION.

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IN WITNESS WHEREOF, the undersigned has caused this Assumption Agreement to be duly executed and delivered as of the date first above written.

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4

Annex 1-A to

Assumption Agreement

Supplement to

Guarantee and Collateral Agreement

Schedule 1

Notices, requests or demands to or upon any Grantor under the Guarantee and Collateral Agreement shall be made to such Grantor as follows:

Any of:

Varsity AP Holding Corporation

GCP Amerifile Coinvest Inc.

Varsity AP Holdings LLC

Amerifile LLC

Peachtree Business Products, LLC

AP RE LLC

3100 Cumberland Boulevard,

Suite 1700

Atlanta, GA, 30339

Attention: Ricardo Nunez

Telephone: (770) 852-9321

HDS IP Holding, LLC

101 Convention Center Drive, Suite 850

Las Vegas, NV 89109

Attention: Ricardo Nunez

Telephone: (770) 852-9321

with copies to

Debevoise & Plimpton LLP

919 Third Avenue

New York, New York 10022

Attention: Paul Brusiloff, Esq.

Facsimile: (212)  ###-###-####

Telephone: (212)  ###-###-####

A-1

Supplement to

Guarantee and Collateral Agreement

Schedule 2

Pledged Stock:

Supplement to

Guarantee and Collateral Agreement

Schedule 3

Intellectual Property Filings

United States Patent and Trademark Office (“USPTO”)

Notice and Confirmation of Grant of Security Interest in Trademarks, dated as of July 27, 2012, made by the signatories thereto in favor of Bank of America, N.A., as administrative agent and collateral agent, to be filed with the Trademark Division of the United States Patent and Trademark Office.

United States Copyright Office (“USCO”)

Grant of Security Interest in Copyrights, dated as of July 27, 2012, made by the signatories thereto in favor of Bank of America, N.A., as administrative agent and collateral agent, to be filed with the United States Copyright Office.

Existing Security Interests

UCC Filings

A-2

Supplement to

Guarantee and Collateral Agreement

Schedule 4

Supplement to

Guarantee and Collateral Agreement

Schedule 5

Patents

None.

Copyrights

Amerifile, LLC

Trademarks

Peachtree Business Products, LLC

Amerifile, LLC

A-3

Supplement to

Guarantee and Collateral Agreement

Schedule 6

None.

A-4