Gigabyte GA-H170TN - Page 21

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22) BL_SW (Back Light Switch)
TheBackLightswitchprovidesthefunctionforscreenbacklightadjustment.
1
Pin No. Denition
1 BL_DOWN
2 BL_UP
10
9
2
1
23) COM1 (Serial Port Header)
The COM header can provide one serial port via an optional COM port cable. For purchasing the optional
COM port cable, please contact the local dealer.
Pin No. Denition
1 NDCD-
2 NDSR-
3 NSIN
4 NRTS-
5 NSOUT
6 NCTS-
7 NDTR-
8 NRI-
9 GND
10 No Pin