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