Jetway Computer NF9A - Manual (Page 15)

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(5) Inverter 5V/12V Select (3-pin):JP6
1-2 closed: Inverter 12V selected
2-3 closed: Inverter 5V select
JP6
JP6 1 3
1 3
(6) LVDS PVCC 5V / 3.3V Function Setting (3-pin): JP7
2-3 closed : LVDS PVCC 3.3V
JP7
1-2 closed: LVDS PVCC 5V
JP7
1 3
1 3
(7) COM2 Header RS232/422/485 Function Select (6-pin): JP9
3-4 closed : RS485
JP9
1-2 closed: RS232
1
5-6 closed : RS422
1 1