Gigabyte MNIC8PI User Manual page 23

25/26/27/28) JCOM6/JCOM3/JCOM5/JCOM1 (5V/12V/RI for Serial Port Option Header)
JCOMS1
JCOMS5
JCOMS3
JCOMS6
29) LCDPWR_CON (LCD Power ON/OFF Jumper)
2 6
1-2 Close: 5V (Power COM)
1 5
2 6
3-4 Close: RI (STAND COM)
1 5
2 6
5-6 Close: 12V (Power COM)
1 5
Open: Power off.
Short: Power On.
- 23 - Hardware Installation