Gigabyte GA-X99-UD4 User Manual page 33

17) F_USB30 (USB 3.0/2.0 Header)
The header conforms to USB 3.0/2.0 specification and can provide two USB ports. For purchasing the
optional 3.5" front panel that provides two USB 3.0/2.0 ports, please contact the local dealer.
18) F_USB1/F_USB2 (USB 2.0/1.1 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.
• 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.
Pin No. Definition
1
1
10
2
3
4
20 11
5
6
7
8
9
10
9 1
10 2
- 33 -
Pin No. Definition
VBUS 11 D2+
SSRX1- 12 D2-
SSRX1+ 13 GND
GND 14 SSTX2+
SSTX1- 15 SSTX2-
SSTX1+ 16 GND
GND 17 SSRX2+
D1- 18 SSRX2-
D1+ 19 VBUS
NC 20 No Pin
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
Hardware Installation