UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 10, 2012

CDW CORPORATION

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (847) 465-6000

None

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

On May 10, 2012, CDW LLC (“CDW”), CDW Finance Corporation (“FinanceCo” and together with CDW, the “Issuers”), CDW Corporation (“Parent”), certain other wholly owned guarantors (the “Subsidiary Guarantors” and together with the Parent, the “Guarantors”) and U.S. Bank National Association, as trustee (the “Trustee”), entered into each of the Second Senior Secured Note Supplemental Indenture, the Third Senior Subordinated Note Supplemental Indenture and the Fourth Senior Note Supplemental Indenture (collectively, the “Supplemental Indentures”) The Supplemental Indentures amend the Issuers’ existing indentures to, among other things, eliminate the ability to release the Parent’s guarantee, such that Parent’s guarantees are “full and unconditional” in accordance with guidance from the staff of the Securities and Exchange Commission. These amendments were effected pursuant to a provision in each of the indentures which permits the Issuers, the Guarantors and the Trustee to amend each of the indentures without notice to or consent of any noteholder in order to make any change that does not adversely affect the noteholders’ legal rights under the applicable indenture, provided that such changes shall not adversely affect the noteholders’ interests in any material respect, as determined in good faith by CDW’s board of directors.

Each of the Second Senior Secured Note Supplemental Indenture, the Third Senior Subordinated Note Supplemental Indenture and the Fourth Senior Note Supplemental Indenture is respectively attached hereto as Exhibit 4.1, Exhibit 4.2 and Exhibit 4.3 and is incorporated by reference herein.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

EXHIBIT INDEX