3.Digital audio connector (4-1 pin SPDIF)

This connector is for an optional S/PDIF audio module that allows digital instead of analog sound input and output.

SPDIF

+5V

SPDIFOUT GND

A7V400-MX

A7V400-MX Digital Audio Connector

• When you input sound for S/PDIF IN, the LINE_OUT will output the sound. Mute LINE_OUT to impede sound output from S/PDIF IN.

• The S/PDIF module is purchased separately.

4. ATX power connector (20-pin ATXPWR)

This connects the power plug from the power supply. The power supply plug is designed to fit this connector in only one orientation. Find the proper orientation and push down firmly until the connector completely fits.

A7V400-MX

ATXPWR

+12.0VDC +5.0VDC

+5VSB +5.0VDC

PWR_OK -5.0VDC

COM COM

+5.0VDC COM

COM COM

+5.0VDC PS_ON#

COM COM

+3.3VDC -12.0VDC

+3.3VDC +3.3VDC

A7V400-MX ATX Power Connector

If you will need to replace the power supply in the future, make sure that your new ATX 12V power supply can provide 8A on the +12V lead and at least 1A on the +5-volt standby lead (+5VSB). The minimum recommended wattage is 230W, or 300W for a fully configured system. The system may become unstable and may experience difficulty powering up if the power supply is inadequate.

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Chapter 1: Product introduction