Gigabyte GA-990XA-UD3 R5 Manual - Page 27
F_USB1/F_USB2/F_USB3 USB 2.0/1.1 Headers, F_USB30 USB 3.0/2.0 Header
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Page 27 highlights
10) 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. 1 F_USB30 10 F_ U 20 11 Pin No. Definition Pin No. Definition 1 VBUS G.QBOFM 11 D2+ 2 SSRX1- 12 D2- 3 SSRX1+ 13 GND 4 GND 14 SSTX2+ 5 SSTX1- 15 SSTX2- 6 SSTX1+ 7 GND 16 GND B_ 17 SSRX2+ 8 D1- 18 SSRX2- 9 D1+ 19 VBUS 10 NC 20 No Pin 11) F_USB1/F_USB2/F_USB3 (USB 2.0/1.1 Headers) S BUG RT 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 9 1 10 2 1 Power (5V) 2 Power (5V) 3 USB DX- 4 USB DY- 5 USB DX+ S 6 3 USB DY+ B SS S 7 GND 8 GND 9 No Pin 10 NC S_ SF •• 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. B_ - 27 - Hardware Installation S_