7. 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 EZ_PLUG.

Make sure that your 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.

EZ_PLUG

 

 

 

 

 

 

 

 

+5V

ATXPWR +3.3VDC

 

 

 

 

 

 

+3.3VDC

GND

 

 

 

 

 

 

 

 

 

 

 

GND

-12.0VDC

 

 

 

 

+3.3VDC

+12V

GND

 

 

 

 

 

GND

 

 

 

 

 

PS_ON#

 

 

 

 

+5.0VDC

 

 

 

 

 

 

GND

 

 

 

 

GND

 

 

 

 

 

 

GND

 

 

 

 

+5.0VDC

 

 

 

 

 

 

GND

 

 

 

 

GND

 

-5.0VDC

 

 

 

 

 

PWR_OK

 

+5.0VDC

 

 

 

 

 

+5VSB

 

 

 

 

 

 

+5.0VDC

 

 

 

 

 

+12.0VDC

 

 

 

 

 

ATX12V

 

 

 

 

 

 

COM +12V DC

P4B266-C

COM +12V DC

P4B266-C ATX & Auxiliary Power Connectors

2-28

Chapter 2: Hardware information