JETWAY G03-NMF93-F User Manual page 10

(4) JP4 (6-pin): COM3 Port Pin9 Function Select
JP4
1
1 1
1-2 closed: RS232;
3-4 closed : +12V;
5-6 closed : +5V
(5) JP12 (6-pin): COM3 Header RS232/485/422 Function Select
JP12
1
1
1
1-2 closed: RS232;
3-4 closed : RS485; 5-6 closed : RS422
(6) JP8 (6-pin): COM4 Port Pin9 Function Select
JP8
1
1 1
1-2 closed: RS232;
3-4 closed : +12V;
5-6 closed : +5V
6