Gigabyte GA-880GM-USB3L Manual - Page 28

F_USB1/F_USB2 USB Headers, COM Serial Port Header

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11) F_USB1/F_USB2 (USB Headers) The headers conform to USB 2.0/1.1 specification. Each USB header can provide two USB ports via an UG T optional USB bracket. For purchasing the optional USB bracket, please contact the local dealer. Pin No. Definition 1 Power (5V) 2 Power (5V) 9 10 1 2 3 USB DX- 4 USB DY- 5 USB DX+ 6 USB DY+ 7 GND 8 GND 9 No Pin 10 NC • 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. 10 9 21 Pin No. 1 2 3 4 5 6 7 8 9 10 Definition NDCDNSIN NSOUT NDTRGND NDSRNRTSNCTSNRINo Pin Hardware Installation - 28 -

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Hardware Installation
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11) F_USB1/F_USB2 (USB Headers)
The headers conform to USB 2.0/1.1 specification. 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.
Definition
1
Power (5V)
2
Power (5V)
3
USB DX-
4
USB DY-
5
USB DX+
6
USB DY+
7
GND
8
GND
9
No Pin
10
NC
•
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.
10
9
2
1
12) COM (Serial Port Header)
The COM header can provide one serial port via an optional COM port cable. For purchasing the op-
tional COM port cable, please contact the local dealer.
Pin No.
Definition
1
NDCD-
2
NSIN
3
NSOUT
4
NDTR-
5
GND
6
NDSR-
7
NRTS-
8
NCTS-
9
NRI-
10
No Pin
1
2
9
10