7 . ATX power connectors (24-pin EATXPWR1,

4-pin ATX12V1)

These connectors are for ATX power supply plugs. 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.

ATX12V1

 

EATXPWR1

GND

GND

+3 Volts

Ground

+12V DC

+12V DC +12 Volts

+5 Volts

 

 

+12

Volts

+5 Volts

P5GD1-VM

 

+5V Standby

+5 Volts

 

Power OK

-5 Volts

 

Ground

Ground

 

 

+5

Volts

Ground

 

 

Ground

Ground

 

 

+5 Volts

PSON#

 

 

Ground

Ground

P5GD1-VM ATX power connectors

 

+3

Volts

-12 Volts

 

+3

Volts

+3 Volts

Important notes on the motherboard power requirements

¥Do not forget to connect the 4-pin ATX +12 V power plug; otherwise, the system will not boot up.

¥To power the motherboard, it is recommended that you use an ATX 12 V Specification 2.0 power supply unit (PSU) with a minimum 350 W power rating. This PSU type has a 24-pin and 4-pin ATX power plugs.

¥If you intend to use a PSU with a 20-pin and 4-pin power plugs, make sure that the 20-pin power plug can provide at least 15A on +12 V 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. We do not, however, recommend the use of a 20-pin PSU.

¥The ATX 12 V 350 W Spec. 2.0 PSU passed the motherboard power requirement test with the following configuration:

CPU

:

Intel¨ Pentium¨ 4 3.6 GHz

Memory

:

512 MB DDR2 (x 4)

Grpahics card

:

PCI Express x16 Nvidia EN5900

Parallel ATA devices:

IDE hard disk drive (x 2)

Serial ATA device

:

SATA hard disk drive

Optical drives

:

CD-ROM (x 2)

¥You must install a PSU with a higher power rating if you intend to

install additional devices.

1 - 30

Chapter 1: Product introduction