This package contains:

Realtek Function drivers for the Realtek Azalia audio chip (Including Microsoft UAA Driver in English edition)

Supported OS:

Windows 2000
Windows XP
Windows XP 64-bit
Windows Server 2003 Enterprise Edition 32-bit
Windows Server 2003 Enterprise Edition 64-bit
Windows Vista x86 (32-bit)
Windows Vista x64 (64-bit) Learn more.