Jetway Computer NF36 - Manual (Page 16)

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(7) JCOMP2 (6-pin): COM2 Pin9 Function Select
3-4 closed : +12V;
JCOMP2
1-2 closed: RS232;
1
5-6 closed : +5V
(8) JCOMP3 (6-pin): COM3 Pin9 Function Select
3-4 closed : +12V;
JCOMP3
1-2 closed: RS232;
1
5-6 closed : +5V