This package contains version 1.0a of the Universal Audio Architecture (UAA) high-definition audio class driver for the listed desktop models running the listed Microsoft Windows Operating System. This release supports the high-definition audio and modem implementations that were known to Microsoft as of 01 August 2004. This is the second version of this driver. For more information about this issue, refer to Microsoft Knowledge Base article 888111, "Universal Audio Architecture (UAA) High Definition Audio class driver version 1.0a available for Windows XP, Windows Server 2003, and Windows 2000."