Asus P5N73-AM - Expansion Card Configuration and IRQs

1-24 Chapter 1: Product introduction
11. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
These connectors are for ATX power supply plugs. The power supply plugs are
designed to t these connectors in only one orientation. Find the proper orientation and
push down rmly until the connectors completely t.
P5N73-AM
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P5N73-AM ATX Power Connector
EATXPWR
+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
GND
+12V DC
GND
+12V DC
ATX12V
• DO NOT forget to connect the 4-pin ATX +12 V power plug; otherwise, the system will
not boot.
• We recommend that you use a power supply unit (PSU) with a higher power output
when conguring a system with more power-consuming devices when you intend to
install additional devices. The system may become unstable or may not boot up if the
power is inadequate.
• Ensure that your PSU can provide at least the minimum power required by your system.
• If you intent to use a PSU with 20-pin and 4-pin power plugs, ensure that the 20-pin
power plug can provide at least 15A on +12V and that the PSU has a minimum power
rating of 350 W. The system may become unstable or may not boot up if the power is
inadequate.
10. Speaker connector (4- pin SPEAKER)
This 4-pin connector is for the chassis-mounted system warning speaker. The speaker
allows you to hear system beeps and warnings.
P5N73-AM
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P5N73-AM Speaker Out Connector
SPEAKER
+5V
GND GND
Speaker Out
1