Gigabyte GA-A75N-USB3 User Manual page 26

11) F_USB1 (USB 2.0/1.1 Header)
The header conforms 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.
12) CI (Chassis Intrusion Header)
This motherboard provides a chassis detection feature that detects if the chassis cover has been removed.
This function requires a chassis with chassis intrusion detection design.
Hardware Installation
Pin No. Definition
1
9 1
2
10 2
3
4
5
6
7
8
9
10
Pin No. Definition
1
2
1
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Power (5V)
Power (5V)
USB DX-
USB DY-
USB DX+
USB DY+
GND
GND
No Pin
NC
Signal
GND