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Asus M3N78-CM User Manual

Page 44

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1-32

Chapter 1: Product introduction

10. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)

These connectors are for an ATX 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.

• We recommend that you use an ATX 12 V Specification 2.0-compliant

power supply unit (PSU) with a minimum of 300 W power rating. This PSU

type has 24-pin and 4-pin power plugs.

• If you intend to use a PSU with 20-pin and 4-pin power plugs, ensure that

the 20-pin power plug can provide at least 15 A on +12 V and that the PSU

has a minimum power rating of 300 W. The system may become unstable

or may not boot up if the power is inadequate.

• Do not forget to connect the 4-pin ATX +12 V power plug. Otherwise, the

system will not boot up.

• We recommend that you use a PSU with higher power output when

configuring a system with more power-consuming devices. The system

may become unstable or may not boot up if the power is inadequate.

• If you are uncertain about the minimum power supply requirement for your

system, refer to the Recommended Power Supply Wattage Calculator

at http://support.asus.com/PowerSupplyCalculator/PSCalculator.

aspx?SLanguage=en-us for details.

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

additional devices.

M3N78-CM

R

M3N78-CM 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