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Installing the Motherboard

Pin Signal Name

AUDIO1: Front Panel Audio header

This header allows the user to install auxiliary front-oriented microphone and line-out ports

for easier access.

Pin Signal Name Function

1 AUD_MIC Front Panel Microphone input signal

2 AUD_GND Ground used by Analog Audio Circuits

3 AUD_MIC_BIAS Microphone Power

4 AUD_VCC Filtered +5V used by Analog Audio Circuits

5 AUD_F_R Right Channel audio signal to Front Panel

6 REVD Reserved

7 REVD Reserved

8 Key No Pin

9 AUD_F_L Left Channel Audio signal to Front Panel

10 REVD Reserved

CD_IN1: CD Audio Input header

Pin Signal Name Function

1 CD in_L CD In left channel

2 GND Ground

3 GND Ground

4 CD in_R CD In right channel

Connecting Optional Devices

Refer to the following for information on connecting the motherboard’s optional devices:

ECS 945P-A User Manual

Questions and Answers: