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28 ASUS TXP4-X User’s Manual
III. INSTALLATION
(Connectors)
III. INSTALLATION
8. IDE activity LED (2-pin IDE_LED)
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.
IDE Activity LED
TIP: If the case-mounted LED does not light,
try reversing the 2-pin plug.
IDE_LED
+
R
9. Chassis , CPU , & Power Supply Fan Connectors (3-pin FANPWR)
These connectors support cooling fans of 500mAMP (6WATT) 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.
Orientate the fins so that air flow
runs across motherboard's regulators.
Air Flow
Air Flow
12Volt Cooling Fan Power
Chassis Fan Power
CPU Fan Power
Power Supply Fan
GND
Rotation
+12V
R