Asus P4P8X - Manual (Page 14)

1-4 Chapter 1: Product introduction
USB 2.0 technology
The motherboard implements the new Universal Serial Bus (USB) 2.0
specification, extending the connection speed from 12 Mbps on USB 1.1 to a fast
480 Mbps on USB 2.0. See pages 1-5 and 1-28.
6-channel digital audio
The ADI AD1985 AC’97 audio CODEC is onboard to provide 6-channel audio
playback for 5.1 surround sound and over 90dB dynamic range. A digital audio
connector is onboard to accommodate an optional S/PDIF (Sony/Philips Digital
Interface) Out module. See page 3-5.
Windows 98SE/ME/2000/XP support 6/4/2-channel audio modes.