Jetway Computer NF3A User Manual
Page 15
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10
(3) JP3 (4-pin): COM4 Header Pin9 Function Select
JP3→COM4
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
(4) JP4 (4-pin): COM3 Header Pin9 Function Select
JP4→COM3
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
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