ECS G31T-M, Manual, Page: 27 / 52

21
Installing the Motherboard
Connecting Optional Devices
Refer to the following for information on connecting the motherboard’s optional
devices:
F_AUDIO1: Front Panel Audio header for Azalia (optional)
This header allows the user to install auxiliary front-oriented microphone and line-
out ports for easier access.
Pin Signal Name
Pin Signal Name Function
1
AUD_MIC Front Panel Microphone input signal
2
AUD_GND Ground used by Analog Audio Circuits
3
MIC_BIAS Microphone Power
4
AUD_VCC Fi5V used by Analog Audio Circuits
5
AUD_F_R Right Channel audio signal to Front Panel
6
AUD_RET_R Right Channel Audio signal to Return from Front Panel
7
REVD Reserved
8
Key No Pin
9
AUD_F_L Left Channel Audio signal to Front Panel
10
AUD_RET_L Left Channel Audio signal to Return from Front Panel
1
PORT 1L 2 AUD_GND
3
PORT 1R
4
PRESENCE#
5
PORT 2R 6 SENSE1_RETURN
7
SENSE_SEND
8
KEY
Pin Signal Name
Pin Signal Name
9
PORT 2L
10
SENSE2_RETURN