DFI G7S620-N User Manual page 30

2
Hardware Installation
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 JP4 pins 3-
5 and 4-6 to On. Otherwise, leave this jumper's setting at 1-3, 2-4
On.
The table below list the pin assignment of JP4.
30
1 MRI2-
3 X_MRI2-
5 Vcc
5 3 1
4 2
6
1-3, 2-4 On:
JP4
RS232 4-6 (12V) On:
(default) Auxiliary power
2 MDCD2-
4 X_MDCD2-
6 +12V
5 3 1
4 2
6
3-5 (5V),