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3. HARDWARE SETUP
12) IDE Activity LED (2-pin IDE)
This connector 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.
1
0
1
0
K7M-RM IDE Activity LED
13) Power Supply, CPU, Chassis Fan Connectors
(3-pin PWR_FAN, CPU_, CHA_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 (see section 6. SOFTWARE REFERENCE) or Intel LDCM Utility.
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.
1
0
1
0
K7M-RM 12-Volt Cooling Fan Power
ASUS K7M-RM User's Manual
1
0
TIP: If the case-mounted LED does not
light, try reversing the 2-pin plug.
IDELED
®
Power Supply / CPU Fan Power
1
0
Chassis Fan Power
GND
+12V
Rotation
®
39
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