DFI G5G330-P User Manual page 28

2
Hardware Installation
COM 4 RS232/RS485/AUX Select
JP6 is used to set COM 4 to RS-232 or RS-485. If the serial device
connected to this port requires 5V/12V power from the system
board, set JP6 pins 1-3, 2-4, 9-11 and 10-12 to On. This setting
automatically sets COM 4 at RS-232.
28
COM 4 RS232/RS485/AUX Select
RS232 (default)
RS485
Auxiliary power
JP6
JP6
1-3, 2-4, 7-9, 8-10 On
3-5, 4-6, 7-9, 8-10 On
1-3, 2-4, 9-11 (12V),
10-12 (5V) On