Chapter 2
2-22
Front USB Connector: USB1/2 or USB3/4
The mainboard provides two USB 2.0 pinheaders (optional USB 2.0
Bracket available). Users can choose either the USB1/USB2 or the USB3/USB4
depending on their needs. The difference between USB1/USB2 & USB3/USB4
is that USB1/USB2 are compliant with Intel
®
Front Panel I/O Connectivity
Design Guide.
USB 2.0 technology increases data transfer rate up to a maximum through-
put of 480Mbps, which is 40 times faster than USB 1.1, and is ideal for connect-
ing high-speed USB interface peripherals such as USB HDD, digital cameras,
MP3 players, printers, modems and the like.
Pin Description Pin Description
1 +5V(SB) 2 GND
3 USB0- 4 (Cut away)
5 USB0+ 6 USB1+
7 GND 8 USB1-
9 GND 10 +5V(SB)
USB3/4 Pin Definition
PIN SIGNAL PIN SIGNAL
1 USBPWR 2 USBPWR
3 USBP2- 4 USBP3-
5 USBP2+ 6 USBP3+
7 GND 8 GND
9 NC 10 USBOC
USB1/2 Pin Definition
USB3/4
(optional)
1
9
2 10
10
9
2
USB1/2
1
USB3
(optional)
USB4
(optional)
USB1 USB2
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