4.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

P4SDR-VM

ATX12V

+12V DC COM

Pin 1

+12V DC COM

P4SDR-VM ATX Power Connectors

 

+5.0VDC

+5.0VDC

-5.0VDC

COM

COM

COM

PS ON#

COM

-12.0VDC

+3.3VDC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+12.0VDC

+5VSB

PWR OK

COM

+5.0VDC

COM

+5.0VDC

COM

+3.3VDC

+3.3VDC

 

5.USB headers (10-1 pin USB2, USB3)

If the USB ports on the rear panel are inadequate, two USB headers are available for additional USB ports. The USB headers complies with USB 1.1 specification.

P4SDR-VM

P4SDR-VM USB Header

2

USB2

USB3

1

Power

P3-

P3+

GND

 

USB

USB

USB

NC

USB Power

USB P4-

USB P4+

GND

 

10

9

2-20

Chapter 2: Hardware information