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Chapter 1: Product introduction
3. ATX power connectors (24-pin ATXPWR, 4-pin ATX12V)
These connectors are for an ATX power supply plugs. The power supply plugs
are designed to fit these connectors in only one orientation. Find the proper
orientation and push down firmly until the connectors completely fit.
4. Internal audio connectors (4-pin CD, AUX)
These connectors allow you to receive stereo audio input from sound sources
such as a CD-ROM, TV tuner, or MPEG card.
A8S-X
®
A8S-X ATX power connectors
ATXPWR
ATX12V
+12V DC
GND
+12V DC
GND
+3 Volts
+3 Volts
Ground
+5 Volts
+5 Volts
Ground
Ground
Power OK
+5V Standby
+12 Volts
-5 Volts
+5 Volts
+3 Volts
-12 Volts
Ground
Ground
Ground
PSON#
Ground
+5 Volts
+12 Volts
+3 Volts
+5 Volts
Ground
A8S-X
®
A8S-X Internal audio connectors
AUX (White)
Right Audio Channel
Left Audio Channel
Ground
CD (Black)
Right Audio Channel
Left Audio Channel
Ground
• Use of an ATX 12 V Specification 2.0-compliant power supply unit (PSU)
that provides a minimum power of 350 W is recommended for a fully-
configured system.
• Do not forget to connect the 4-pin ATX +12 V power plug; otherwise, the
system will not boot up.
• Use of a power supply unit (PSU) with a higher power output is
recommended when configuring a system with more power-consuming
devices. The system may become unstable or may not boot up if the power
is inadequate.
• Make sure that your PSU can provide at least the minimum power required
by your system.