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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
Speak-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 connector
for microphones. These three ports can also be used for 5.1 channel audio
output.
NOTE: When used for 5.1 channel audio output, Speak-out is used for "left/
right", Lin-in is used for "surround left/right" while Mic-in is used for "Center/LFE
(Subwoofer).
2-14
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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
Speak-out Lin-in
DESCRIPTION
+5V
Negative Data Channel 0
Positive Data Channel 0
Ground
+5V
Negative Data Channel 1
Positive Data Channel 1
Ground
Mic-in
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