DFI-ITOX G4M300-M12 User Manual page 30

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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 JP12 pins
3-5 and 4-6 to On. Otherwise, leave this jumper's setting at 1-3, 2-4
On.
30
2
4
6
JP12
1
3
5
1-3, 2-4 On:
RS232
4-6 (12V) On:
(default)
Auxiliary power
2
4
6
1
3
5
3-5 (5V),

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