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36 ASUS CUWE User’s Manual
Connectors
3. H/W SETUP
3. HARDWARE SETUP
14) IDE Activity LED Lead (2-pin IDELED)
This lead supplies power to the cabinet’s IDE activity LED. Read and write
activity by devices connected to the Primary or Secondary IDE connectors will
cause the LED to light up.
CUWE IDE Activity LED
TIP: If the case-mounted LED does not
light, try reversing the 2-pin plug.
IDELED
010101
®
CUWE
15) Chassis, CPU, & Power Supply Fan Connectors (3-pin CHA_, CPU_, PWR_FAN)
These connectors support cooling fans of 350mA (4.2 Watts) 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 consid-
eration the polarity of the connector.
NOTE: The “Rotation” signal is to be used only by a specially designed fan with
rotation signal. The Rotations per Minute (RPM) can be monitored using ASUS PC
Probe Utility or Intel LDCM Utility (see 6. SOFTWARE REFERENCE).
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.
010101
®
CUWE
CUWE 12-Volt Cooling Fan Power
Chassis Fan Power
GND
Rotation
+12V
Power Supply Fan
CPU Fan Power
GND
Rotation
+12V
GND
Rotation
+12V