Aaeon SBC-456, Manual, Page: 30 / 94

22 SBC-456/456E User Manual
Serial port connectors (CN8, CN6)
The SBC-456/456E offers one RS-232, and one RS-232/422/485 serial
port. You can select or disable the address for each port with the
BIOS Peripheral Setup program.
The card mounting bracket holds COM 1, the DB-9 serial port
connector for the first port. The connector on the SBC-456/456E
board (CN6) is COM 1 and COM 2 for RS-232/422/485. The
following sections tell how to make connections.
RS-232 connector (CN8)
The following table shows the pin assignments for the card's RS-
232 port:
RS-232 connector (CN8)
Pin Signal
1 DCD
2 RX
3 TX
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
10 NC