Acrosser AR-B1740 - Manual (Page 10)

Audio Interface
4 3 2 1
COM Port Connector
COM1
COM2
AR-B1740 User's Manual 10
Connector : Audio1
Type : Onboard 10-pin box header
Pin Description Pin Description
1 LINE IN LEFT 2 LINE IN RIGHT
3 GND 4 GND
5 MIC 6 NC
7 GND 8 GND
9 SPEAKER LEFT 10 SPEAKER RIGHT
Connector : COM1
Type : onboard 10-pin box header
Pin Description Pin Description
1 DCD 2 RXD
3 TXD 4 DTR
5 GND 6 DSR
7 RTS 8 CTS
9 RI
2
Audio1
1 9
10
Connector : COM2
Type : onboard 10-pin box header
Pin Description Pin Description
1 DCD2 2 RXD2
3 TXD2 4 DTR2
5 GND 6 DSR2
7 RTS2 8 CTS2
9 RI 10 NC
Connector : JCOM2
Type : onboard 4-pin box header
Pin Description Pin Description
1 485DATA+(422TXD+) 2 485DATA-(422TXD-)
3 422RXD+ 4 422RXD-