-Realtek High Definition Audio Driver R2.51 for WHQL driver version 5.10.0.6167 for Windows 2000 with SP4,Windows XP 32/64 bit,Windows Server 2003 32/64 bit. -Realtek High Definition Audio Driver R2.51 for WHQL driver version 6.0.1.6167 for Windows Vista 32/64 bit,Windows Server 2008 32/64 bit,Windows 7 32/64 bit,Windows Server 2008 R2 64 bit.