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22
Connecting Optional Devices
Refer to the following for information on connecting the motherboard's optional devices:
AUDIO1: Front Panel Audio header
This header allows the user to install auxiliary front-oriented microphone
and line-out ports for easier access.
Pin
1
2
3
4
5
6
7
8
9
10
AUXIN1: Auxiliary In header
This connector is an additional line-in audio connector. It allows you to attach a line-in
cable when your rear line-in jack is set as line out port for 4-channel function.
Pin
1
2
3
4
Pin
Signal Name
Signal Name
AUD_MIC
Front Panel Microphone input signal
AUD_GND
Ground used by Analog Audio Circuits
AUD_MIC_BIAS Microphone Power
AUD_VCC
Filtered +5V used by Analog Audio Circuits
AUD_F_R
Right Channel audio signal to Front Panel
AUD_RET_R
Right Channel Audio signal to Return from Front Panel
REVD
Reserved
Key
No Pin
AUD_F_L
Left Channel Audio signal to Front Panel
AUD_RET_L
Left Channel Audio signal to Return from Front Panel
Signal Name
AXU In left channel
AUX_L
Ground
GND
Ground
GND
AXU In right channel
AUX_R
Installing the Motherboard
Function
Function
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