Exhibit 22.1

LIST OF ISSUER AND GUARANTOR SUBSIDIARIES

The following subsidiaries of CDW Corporation serve as an issuer or guarantor, as applicable, for each outstanding series of senior notes:

Subsidiary		Jurisdiction of Organization		Type of Obligor
CDW LLC		Illinois		Issuer
CDW Finance Corporation		Delaware		Issuer
CDW Technologies LLC		Wisconsin		Guarantor
CDW Direct, LLC		Illinois		Guarantor
CDW Government LLC		Illinois		Guarantor
CDW Logistics LLC		Illinois		Guarantor