This package provides the Realtek High Definition Audio Driver for the listed workstation models and operating systems. NOTE: Refer to the Prerequisites section for important information regarding the installation of this driver. Users creating their own disk images must first install the Microsoft Universal Audio Architecture (UAA) driver before installing the Realtek driver. The Microsoft UAA driver provides the necessary support for the high definition (HD) audio bus used by the Realtek HD audio CODEC. Users who are upgrading to this newer driver on an existing system, should ensure that the UAA driver is already installed on your system. The UAA driver may be listed on your system as the ''High Definition Audio Driver Package.''