Jetway Computer NMF91-G41 - Manual (Page 11)

7
(7)JP9 (6-pin): COM2 Pin9 function select
3-4 closed : +12V
JP9
1
1-2 closed: RS232
1
1
5-6 closed : +5V
(8) JP10 (6-pin): COM2 Port RS232/485/422 Function Select
3-4 closed : RS485
JP10
1
1-2 closed: RS232
1 1
5-6 closed : RS422
(9)JP13 (6-pin): COM7 Pin9 function select
3-4 closed : +12V
JP13
1
1-2 closed: RS232
1
1
5-6 closed : +5V