Syntax S740MP Manual page 26

SPDIF1: SPDIF out header
This is an optional header that provides an S/PDIF (Sony/Philips Digital
Interface) output to digital multimedia device through optical fiber or coaxial
connector.
Pin Signal Name
1 SPDIF Out
2 VCC
3 KEY
4 GND
AUXIN1: Extra line-in connector
This connector is an additional line-in audio connector. It allows you to attach
a line-in cable when your rear line-in jack is set as line out port for 4-channel
function.
Pin Signal Name
1 AUX_L
2 GND
3 GND
4 AUX_R
EZJ1: EZ-Watcher interface header
This connector is for use with EZ-Watcher interface only. The EZ-Watcher
allows you to adjust the CPU frequency according to your desire.
Pin Signal Name
1 PCDAT
3 SCI#
5 GND
7 GND
9 GND
11 HDDN
13 Key
RF1: IR Mouse header
If you have a wireless mouse, connect the IR mouse cable to this header.
Pin Signal Name
1 VCC
2 PMDAT
3 PMCLK
4 KEY
5 GND
Function
AUX In left channel
Ground
Ground
AUX In right channel
Pin Signal Name
2 PCREQ
4 PCIRST#
6 VCC
8 VCC
10 VCC
12 CDROM
14 RSVD
22