3.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.

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 and may experience difficulty powering up if the power supply is inadequate.

 

 

 

 

ATXPWR

 

 

 

+5.0VDC

+5.0VDC

-5.0VDC

COM

COM

COM

PS ON#

COM

-12.0VDC

+3.3VDC

 

Pin 1

+5VSB

PWROK

COM

+5.0VDC

COM

+5.0VDC

COM

+3.3VDC

+3.3VDC

P4SDX

+12.0VDC

P4SDX ATX Power Connector

ATX12V

+12V DC +12V DC

GND GND

5.Chassis intrusion connector (4-1 pin CHASSIS)

This lead is for a chassis designed with intrusion detection feature. This requires an external detection mechanism such as a chassis intrusion sensor or microswitch. When you remove any chassis component, the sensor triggers and sends a high-level signal to this lead to record a chassis intrusion event.

By default, the pins labeled “Chassis Signal” and “Ground” are shorted with a jumper cap. If you wish to use the chassis intrusion detection feature, remove the jumper cap from the pins.

P4SDX

P4SDX Chassis Alarm Lead

CHASSIS

+5VSB MB

Chassis Signal GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Default)

1-18

Chapter 1: Product introduction