Supported operating system:

Windows XP 32-bit
Windows XP 64-bit
Windows Vista 32-bit
Windows Vista 64-bit
Windows 7 32-bit
Windows 7 64-bit

Release note:
ASUS M4A785TD-V EVO motherboard VIA intergrated audio card version 6.0.1.7400 driver for WinXP/XP-64/Vista/Vista-64/Win7/Win7-64 released on 10th Jan 2010.

Supported Devices:
VIA High Definition Audio
VIA High Definition Audio - VIA VT3310