DFI-ITOX G7V300-P User Manual page 33

COM 2 RS232/AUX Select
COM 2 is an RS-232 port. If the serial device connected to this
port requires 5V/12V power from the system board, set JP7 pins
3-5 and 4-6 to On. Otherwise, leave this jumper's setting at 1-3, 2-4
On.
Hardware Installation
1
5
JP7
2
6
1-3, 2-4 On:
RS232
(default)
2
1
5
2
6
3-5 (5V),
4-6 (12V) On:
Auxiliary power
33