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Chapter 2: Hardware information
6. ASUS EZ Plug™ and ATX power connectors
(20-pin ATXPWR, 4-pin ATX+12V, 4-pin AUX+12V)
These connectors connect to an ATX 12V power supply. The plugs from
the power supply are designed to fit these connectors in only one
orientation. Find the proper orientation and push down firmly until the
connectors completely fit.
In addition to the 20-pin ATXPWR connector, this motherboard requires
that you connect the 4-pin ATX +12V power plug to provide sufficient
power to the CPU.
If you are using a standard ATX power supply that does not have the
ATX +12V plug, connect one 4-pin device power plug to the ASUS EZ
Plug™ connector labeled AUX12V.
Make sure that your ATX 12V power supply can provide 8A on the
+12V lead and at least 1A on the +5V 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.
P4S333
®
P4S333 ATX & Auxiliary Power Connectors
ATXPWR
ATX12V
AUX12V
+12V
GND
+5V
GND
Pin 1
+3.3VDC
-12.0VDC
COM
PS_ON#
COM
COM
COM
-5.0VDC
+5.0VDC
+5.0VDC
PWR_OK
+12.0VDC
+3.3VDC
+3.3VDC
COM
+5.0VDC
COM
+5.0VDC
COM
+5VSB
+12V DC COM
+12V DC COM
Pin 1