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MN2000000225
Page 10
You can read below silkscreen print on the PCB. Each COM port has
four jumper settings for the 1/4/8/9 pin for DB9 male connector. You can
select standard RS-232 signal (system default), +5VDC, or +12VDC
power output on the assigned pin.
Serial Port 1 – 1
st
Pin
Normal(DCD)
5V
12V
Serial Port 1 – 4
th
Pin
Normal(DTR)
5V
12V
Serial Port 1 – 8
th
Pin
Normal(CTS)
5V
12V
Serial Port 1 – 9
th
Pin
Normal(RI)
5V
12V