Asus P5B-Plus VISTA Edition - Manual (Page 60)

2-34 Chapter 2: Hardware information
P5B-PLUS
®
P5B-PLUS Internal audio connector
CD
Right Audio Channel
Left Audio Channel
Ground
Ground
11. Optical drive audio connector (4-pin CD)
This connector allows you to receive stereo audio input from sound sources
such as a CD-ROM, TV tuner, or MPEG card.
(black)
P5B-PLUS
®
P5B-PLUS Digital audio connector
+5V SPDIFOUT GND
SPDIF_OUT
12. Digital audio connector (4-1 pin SPDIF)
This connector is for an additional Sony/Philips Digital Interface (S/PDIF)
port(s). Connect the S/PDIF Out module cable to this connector, then install
the module to a slot opening at the back of the system chassis.
The S/PDIF module is purchased separately.