Jetway Computer NF9M - Manual (Page 17)

12
(9) JP2 (4-pin): COM1 Port Pin9 Function Select
JP2→COM1
4-6 Closed:
RI= 12V.
6 4 2
3-4 Closed:
RI= 5V;
2-4 Closed:
RI=RS232;
3 1 5 1 3 5
2 4 6
1 3 5
2 4 6
(10) JP5 (4-pin): COM2 Header Pin9 Function Select
JP5→COM2 Header
4-6 Closed:
RI= 12V.
1
3
5
3-4 Closed:
RI= 5V;
2-4 Closed:
RI=RS232;
4
6
2
6 5
3
1 4
2
5
3
1 6
4
2