ADLINK NuPRO-A40H - Manual (Page 34)

20 Hardware Information
COM1 Connector (RS-232/422/485/485+) (CN10)
(2x5 box header, 2.54mm pitch)
Note:
See BIOS: Advanced > Super I/O to set COM1 to RS-232/
422/485 mode.
COM2/3/4/5/6 Connectors (RS-232) (CN12/18/19/25/26)
(2x5 box header, 2.00mm pitch)
Pin # RS-232 RS-422/485+ RS-485
1 DCD TXD- Data-
2 DSR NC NC
3 RXD TXD+ Data+
4 RTS NC NC
5 TXD RXD+ NC
6 CTS NC NC
7 DTR RXD- NC
8 RI NC NC
9 GND GND GND
10 NC NC NC
Pin # RS-232 Signal
1 DCD
2 DSR
3 RXD
4 RTS
5 TXD
6 CTS
7 DTR
8 RI
9 GND
10 NC
1 2
9 10
1 2
9 10