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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.

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 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

Pin Signal Name Function

CD_IN: Analog audio input connector

SATA1/SATA2: Serial ATA connectors

These connectors are use to support the new Serial ATA devices for the highest date transfer

rates (150 MB/s), simpler disk drive cabling and easier PC assembly. It eliminates limitations

of the current Parallel ATA interface. But maintains register compatibility and software

compatibility with Parallel ATA.

1 CD in_L CD In left channel

2 GND Ground

3 GND Ground

4 CD in_R CD In right channel

Pin Signal Name Function

1 Ground 2 TX+

3 TX- 4 Ground

5 RX- 6 RX+

7 Ground - -

Pin Signal Name

ECS 661GX-M7 User Manual

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