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Chapter 2: Hardware information
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.
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 ATX Power Connectors
ATX12V
+12V DC COM
+12V DC COM
Pin 1
ATXPWR
Pin 1
+3.3VDC
-12.0VDC
COM
PS_ON#
COM
COM
COM
-5.0VDC
+5.0VDC
+5.0VDC
PWR_OK
+12.0VDC
+3.3VDC
+3.3VDC
COM
+5.0VDC
COM
+5.0VDC
COM
+5VSB
P4SDR-VM
®
P4SDR-VM USB Header
USB2
USB P4-
USB P4+
USB Power
GND
1
USB P3-
USB P3+
USB Power
GND
NC
2
9
10
USB3