Chapter 2
USB Ports
The mainboard provides two USB2.0 EHCI/USB1.1 OHCI Universal Se-
rial Bus root for attaching USB devices such as keyboard, mouse or other USB-
compatible devices. You can plug the USB device directly into the connector.
1
2
3
4
5
6
7
8
USB Ports
Audio Port
Speaker-out is a connector for Speakers or Headphones. Line-in is used
for external CD player, Tape player, or other audio devices. Mic-in is a connec-
tor for microphones. These three ports can also be used for 5.1 channel audio
output.
NOTE: When used for 5.1 channel audio output, Speaker-out is used for "left/
right", Line-in is used for "surround left/right" while Mic-in is used for "Center/
LFE (Subwoofer).
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
2-14
USB Port Description
PIN
SIGNAL
1
VCC
2
-Data 0
3
+Data 0
4
GND
5
VCC
6
-Data 1
7
+Data 1
8
GND
Speaker-out Line-in Mic-in
DESCRIPTION
+5V
Negative Data Channel 0
PositiveData Channel 0
Ground
+5V
Negative Data Channel 1
PositiveData Channel 1
Ground