Hardware Installation 2-27
RJ50 Serial
The Retail I/O Board provides one full RS-232 serial port through an RJ50 connector. The
port has a shunt to select between +12V (default), +5V, or normal RI functionality.
Maximum power capability is 1A from this port. The power output from this port is
protected by a self-healing fuse.
Pin Signal Name
1 NC
2 DCD
3 DSR
4 RXD
5 RTS
6 TXD
7 CTS
8 DTR
9 GND
10 RI