IA31 Motherboard User Manual
19
2.5.15 CON14: RS-422 / RS-485 Header
2.5.16 Audio Function
Pin No.
SYMBOL
1 422 RX2-
2 422 RX2+
3 485 TXRX2-
4 485TXRX2+
5 Gnd
Pin-Header
C0~C4 Line in
B1~B4 Line out
A1~A4 Mic in
422 RX2+
2
485TXRX2-
1
4
485TXRX2+
3
422 RX2-
Gnd
5
