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ASUS P2L97-DS User’s Manual 31
III. INSTALLATION
8. Hard Disk Activity LED (2-pin IDELED)
This connector supplies power to the cabinet’s hard disk or IDE activity LED.
Read and write activity by devices connected to the Primary or Secondary IDE
connectors will cause the LED to light up.
IDE Activity LED
TIP: If the case-mounted LED does not light,
try reversing the 2-pin plug.
IDELED
R
9. Chassis, CPU, & Power Supply Fan Connectors (3-pin FAN)
These connectors support cooling fans of 500mA (6W) or less. Orientate 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 consideration
the polarity of the this connector.
NOTE: The “Rotation” signal must only be used with fans specially designed
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.
12Volt Cooling Fan Power
Chassis
Fan Power
CPU Fan Power
Power Supply
Fan Power
R
Ground
Rotation
+12V
Ground
Rotation
+12V
Ground
Rotation
+12V
NOTE: If you are installing two
processors, you may connect
the fan from the second heatsink
to either the power supply or
chassis fan connector.
Connectors
III. INSTALLATION