Gigabyte GA-IMB1900TN - Page 20

23) F_USB1/F_USB2 (USB 2.0/1.1 Headers)
 TheheadersconformtoUSB2.0/1.1specication.EachUSBheadercanprovidetwoUSBportsviaan
optional USB bracket. For purchasing the optional USB bracket, please contact the local dealer.
Pin No. Denition Pin No. Denition
1 Power (5V) 6 USB DY+
2 Power (5V) 7 GND
3 USB DX- 8 GND
4 USB DY- 9 No Pin
5 USB DX+ 10 NC
• Do not plug the IEEE 1394 bracket (2x5-pin) cable into the USB 2.0/1.1 header.
• Prior to installing the USB bracket, be sure to turn off your computer and unplug the power cord
from the power outlet to prevent damage to the USB bracket.
9 1
210
24) COMA/COMB/COMC/COMD/COME/COMF (Serial Port Headers)
Each 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 Pin No. Denition
1 NDCD- 6 NCTS-
2 NDSR- 7 NDTR-
3 NSIN 8 +5V/+12V
4 NRTS- 9 GND
5 NSOUT 10 NC
1
2
9
10
25) COMA_PW/COMB_PW/COMC_PW/COMD_PW/COME_PW/COMF_PW (Serial Port Header
Power Select Jumpers)
The power select jumpers are used to select serial port power.
1-2 Close: Set to 12V.
2-3 Close: Set to 5V. (Default)
1
1
- 20 -