Gigabyte GA-Z77N-WIFI User Manual page 27

11) F_USB1 (USB Header)
optional USB bracket. For purchasing the optional USB bracket, please contact the local dealer.
Do not plug the IEEE 1394 bracket (2x5-pin) cable into the USB 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.
12) COM (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.
1
2
9 1
3
10 2
4
5
6
7
8
9
10
Pin No.
1
2
3
1 2
4
5
9 10
6
7
8
9
10
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Power (5V)
Power (5V)
USB DX-
USB DY-
USB DX+
USB DY+
GND
GND
No Pin
NC
NDCD-
NSIN
NSOUT
NDTR-
GND
NDSR-
NRTS-
NCTS-
NRI-
No Pin
Hardware Installation