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4) F_USB1/ F_USB2(frond-end USB port)
In case the USB ports on the rear panel of the machine case are insufficient,
the user can use the extension USB ports provided by this motherboard.
These ports support USB 2.0 devices. The definitions of the ports are
described below:
Definition
MIC
MIC-BIAS
Output of right channel
Ground
Output of left channel
Pin
2
4
6
8
10
Definition
Ground
5V
-
Empty
-
Pin
1
3
5
7
9
5) F_ AU DI O(Port for front-end sound card)
These sound card ports allow you to connect to the wire harness of
the sound card. After connection, you can easily control the audio
output/microphone through the front panel of the host (Note: Don’t
connect the wire to Pin 4).
The definitions of the ports are described below: