AXIOMTEK CAPA848 - 2.4.18 COM2 Connector (COM2); 2.4.19 CMOS Battery Connector (BAT1)

CAPA848 Capa Board
20 Board and Pin Assignments
2.4.18 COM2 Connector (COM2)
This connector is a 2x5-pin wafer connector. The pin assignments of
RS-232/RS-422/RS-485 are listed in table below. If you need COM2 port to support
RS-422 or RS-485, please refer to BIOS setting in section 4.4.
2.4.19 CMOS Battery Connector (BAT1)
This connector is for CMOS battery interface.
Pin
RS-232
RS-422
RS-485
1
DCD
TX-
Data-
2
DSR
No use
No use
3
RXD
TX+
Data+
4
RTS
No use
No use
5
TXD
RX+
No use
6
CTS
No use
No use
7
DTR
RX-
No use
8
RI
No use
No use
9
GND
No use
No use
10
No use
No use
No use
Pin
Signal
1
+3.3V
2
GND
1
1