Asus P5KEPU - Motherboard - ATX User Manual page 56

10. 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.
P5K/EPU Internal audio connector
11. Digital audio connector (4-1 pin SPDIF_OUT, for ASUS HDMI VGA card)
This connector is for an additional Sony/Philips Digital Interface (S/PDIF)
port(s). If you are using ASUS HDMI-equipped graphics card, connect the
HDMI card to this connector with a S/PDIF out cable.
P5K/EPU Digital audio connector
The ASUS HDMI-equipped graphics card and S/PDIF out cable are purchased
separately.
2-32
®
SPDIF_OUT
®
CD
(black)
Right Audio Channel
Ground
Ground
Left Audio Channel
Chapter 2: Hardware information