4-12 Chapter 4: Motherboard info
•
For a fully congured system, we recommend that you use a power
supply unit (PSU) that complies with ATX 12 V Specication 2.0 (or
later version) and provides a minimum power of 400 W.
• Do not forget to connect the 4-pin EATX12V power plug; otherwise,
the system will not boot.
• Use of a PSU with a higher power output is recommended when
conguring a system with more power-consuming devices. The
system may become unstable or may not boot up if the power is
inadequate.
• The ATX 12 V Specication 2.0-compliant (400W) PSU has been
tested to support the motherboard power requirements with the
following conguration:
CPU: Intel
®
Pentium
®
Extreme 3.73GHz
Memory: 512 MB DDR2 (x4)
Graphics card: ASUS EAX1900XT
Parallel ATA device: IDE hard disk drive
Serial ATA device: SATA hard disk drive (x2)
Optical drive: DVD-RW
• If you want to use two high-end PCI Express x16 cards, use a PSU
with 500W to 600W power or above to ensure the system stability.
12. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
These connectors are for ATX power supply plugs. The power supply
plugs are designed to t these connectors in only one orientation.
Find the proper orientation and push down rmly until the connectors
completely t.
P5K-VM
®
P5K-VM ATX power connectors
EATXPWR
+3 Volts
+3 Volts
Ground
+5 Volts
+5 Volts
Ground
Ground
Power OK
+5V Standby
+12 Volts
-5 Volts
+5 Volts
+3 Volts
-12 Volts
Ground
Ground
Ground
PSON#
Ground
+5 Volts
+12 Volts
+3 Volts
+5 Volts
Ground
ATX12V
+12V DC
GND
+12V DC
GND
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