Jetway Computer NF77 - Manual (Page 13)

(5) JP5: LVDS Inverter Backlight Setting (3-pin)
LVDS Inverter Backlight Setting
2-3 closed : On
JP5
1
3
JP5
1
3
1-2 closed: Off
(6) JP8: Powered RS232 Function Select
3-4 closed : +12V
JP8
1
1-2 closed: RS232
1 1
5-6 closed : +5V
9