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

These connectors are for the 20-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.

ATX12V

 

 

GND

GND

ATXPWR

+12V DC

 

+12V DC

 

 

 

+12.0VDC

+5.0VDC

 

 

+5VSB

+5.0VDC

 

 

PWR_OK

-5.0VDC

 

 

COM

COM

 

 

+5.0VDC

COM

 

 

COM

COM

 

 

+5.0VDC

PS_ON#

 

 

COM

COM

®

 

+3.3VDC

-12.0VDC

 

 

 

 

+3.3VDC

+3.3VDC

ATX power connectors8 . IDE connector (40-1 pin PRI_IDE)

The PRI_IDE connector is for the UltraATA100 IDE hard disk ribbon cable. Connect the cableÕs blue connector to the IDE connector, then connect the gray connector to a slave device (optical drive) and the black connector to the UltraATA100 master device (hard disk drive). Refer to the hard disk documentation for the jumper settings.

¥ Pin 20 on the IDE connector is removed to match the covered hole on the UltraATA cable connector. This prevents incorrect orientation when you connect the cables.

¥For Ultra ATA/133 IDE devices, use an 80-conductor IDE cable.

®

IDE connector

NOTE: Orient the red markings (usually zigzag) on the IDE ribbon cable to PIN 1.

IDE_

PRI

PIN 1

4 - 8

Chapter 4: Motherboard info