2. ATX power connectors (24-pi n EATXPWR, 4-pi n ATX12V)

These connectors are for the 24-pin and 4-pin power plugs from the power supply unit. The plugs from the power supply unit are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit.

Do not forget to connect the 4-pin ATX12V power plug to the ATX12V connector on the motherboard; otherwise, the system will not boot up.

EATXPWR

 

+3

Volts

 

+12

Volts

 

+12

Volts

 

+5V Standby

 

Power OK

 

Ground

 

+5

Volts

 

Ground

 

+5

Volts

 

Ground

 

+3

Volts

M2N5-BN

+3 Volts

M2N5-BN ATX Power Connector

Ground +5 Volts

+5 Volts

+5 Volts

-5 Volts

Ground

Ground

Ground

PSON#

Ground

-12 Volts

+3 Volts

ATX12V

GND GND +12V DC +12V DC

4-

Chapter 3: Starting up