ECS A750GM-M Manual page 23

SPDIFO: 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
2
+5VA
3
Key
4
GND
CASE: Chassis intrusion detect header
This detects if the chassis cover has been removed. This function needs a chassis
equipped with instrusion detection switch and needs to be enabled in BIOS.
Pin 1-2 Function
Short
Chassis cover is removed
Open
Chassis cover is closed
COM: Onboard serial port header
Connect a serial port extension bracket to this header to add a second serial port to
your system.
Pin Signal Name
1
DCDB
2
SINB
3
SOUTB
4
DTRB
5
GND
6
DSRB
7
RTSB
8
CTSB
9
RI
10
Key
Installing the Motherboard
Function
SPDIF digital output
5V analog Power
No pin
Ground
Function
Data Carrier Detect
Serial Input
UART B Serial Output
UART B Data Terminal Ready
Ground
Data Set Ready
RART B Request to Send
Clear to Send
Ring Indicator
No pin
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