9.ATX power connectors (20-pin ATXPWR, 4-pin ATX12V)

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.

1. Do not forget to connect the 4-pin ATX +12V power plug. Otherwise, the system does not boot up.

2.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 or may not boot up if the power is inadequate.

ATX12V1

ATXPWR1

GND +12V DC

+3.3VDC

+3.3VDC

 

 

-12.0VDC

+3.3VDC

 

GND

GND

 

PS_ON#

+5.0VDC

GND +12V DC

GND

GND

 

GND

+5.0VDC

 

GND

GND

P4C800-E

-5.0VDC

PWR_OK

 

+5.0VDC

+5VSB

 

+5.0VDC

+12.0VDC

P4C800-E ATX Power Connector

10.Power supply thermal connector (2-pin TRPWR)

If your power supply has a thermal monitoring feature, connect its thermal sensor cable to this connector.

TRPWR

P4C800-E

Ground

TRPWR

P4C800-E Power Supply Thermal Connector

2-28

Chapter 2: Hardware information