ECS A740GM-M, Manual, Page: 23 / 64

19
Installing the Motherboard
CD_IN: Analog audio input connector
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.
IR: Infrared header
2
Key
3
+5V
4
GND
1
NC
Pin Signal Name
The motherboard supports an Infrared (IR) data port. Infrared ports allow the wire-
less exchange of information between your computer and similarly equipped devices
such as printers, laptops, Personal Digital Assistants (PDAs), and other computers.
2
+5VA 5V analog Power
3
Key No pin
4
GND Ground
1
SPDIF SPDIF digital output
Pin Signal Name Function
Pin Signal Name Function
1
CD_L Left CD-in signal
2
GND Ground
3
GND Ground
4
CD_R Right CD-in signal
5
IRTX
6
IRRX