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ASUS P2L-VM/P2E-VM User’s Manual 33
III. INSTALLATION
Connectors
III. INSTALLATION
23. Chassis, CPU , & Power Supply Fan Connectors (3-pin CHA_, CPU_, PWR_FAN)
These connectors support cooling fans of 500mAMP (6 Watts) or less. Orien-
tate the fans so that the heat sink fins allow airflow to go across the onboard heat
sink(s) instead of the expansion slots. Depending on the fan manufacturer, the
wiring and plug may be different. The red wire should be positive, while the
black should be ground. Connect the fan’s plug to the board taking into consid-
eration the polarity of the this connector. NOTE: The “Rotation” signal is to
be used only by a specially designed fan with rotation signal.
WARNING! The CPU and/or motherboard will overheat if there is no airflow
across the CPU and onboard heatsinks. Damage may occur to the motherboard
and/or the CPU fan if these pins are incorrectly used. These are not jumpers,
do not place jumper caps over these pins.
R
P2L-VM/P2E-VM 12-Volt Cooling Fan Power
Chassis Fan Power
GND
Power Supply Fan
CPU Fan Power
Rotation
+12V
Rotation
GND
+12V
24. ATX Power Supply Connector (20-pin block ATXPWR)
25. ATX Power Supply Fan Control Connector (6-pin block)
This connector connects to a ATX power supply. The plug from the power supply
will only insert in one orientation because of the different hole sizes. Find the
proper orientation and push down firmly making sure that the pins are aligned. If
you have an ATX 2.01 power supply, a 6 pin cable can be connected to the
motherboard in order to control the power supply’s fan and monitor rotation.
IMPORTANT: Make sure that your ATX power supply can supply at least
10mAmp on the 5-volt standby lead (5VSB). You may experience difficulty in
powering on your system if your power supply cannot support the load. For
Wake on LAN support, your ATX power supply must supply at least 720mAmp.
R
P2L-VM/P2E-VM ATX Power Connector
ATX Power Supply
Fan Control
+3.3Volts
+3.3 Volts
-12.0Volts
+3.3 Volts
Ground
Ground
Power Supply On
+5.0 Volts
Ground
Ground
Ground
Ground
-5.0 Volts
Power Good
+5.0 Volts
+5V Standby
+5.0 Volts
+12.0Volts
Ground
+5.0 Volts
Rotation
Fan On/Off