13
Chapter 2: Motherboard Installation
Pin
Signal
Pin
Signal
1
VCC
2
Key
3
NC
4
Signal
Connecting Optional Devices
Refer to the following for information on connecting the motherboard’s optional
devices:
SPK1: Speaker Header
Connect the cable from the PC speaker to the SPK1 header on the motherboard.
Pin
Signal
Pin
Signal
1
SPDIFOUT
2
5VA
3
KEY
4
GDN
SPDIFO1: S/PIF Out Header
S/PDIF (Sony/Plilips Digital Interface) is a standard audio transfer file format
and allows the transfer of digatal audio signals from one device to another
without having to be converted first to an analog format. Via a specific audio
cable, you can connect the SPDIFO1 header (S/PDIF output) on the
motherboard to the S/PDIF digital input on the external speakers or AC Decode
devices.
