BI94GS-IAB
13
JCOM1 & JCOM2: Rear Serial Port Connectors
The motherboard has 2 Rear Serial Port Connectors for connecting Serial Port.
Pin RS232 RS422 RS485
1 -PDCD
TX- TX-
2 PSIN TX TX
3 PSOUT
RX NC
4 -PDTR
RX- NC
5 GND GND GND
6 -PDSR
NC NC
7 -PRTS
NC NC
8 -PCTS
NC NC
9 -PRI NC NC
COM 2
COM1
10 NC NC NC
JSEL2: RS-232/422/485 Switch Headers for JCOM1A
The header determines that JCOM1A belongs to RS-232, 422, or 485.
(Default: RS-232)
RS-232 RS-422
RS-485
1-3 3-5 3-5
2-4 4-6 4-6
7-9 9-11 9-11
8-10 10-12 10-12
