Asus SP98AGP-X - Manual (Page 29)

ASUS SP98AGP-X User’s Manual 29
III. INSTALLATION
Connectors
III. INST
ALLA
TION
11. 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.
Orientate the fins so that airflow runs
across motherboard's regulators
Air Flow Air Flow
12Volt Cooling Fan Power
Chassis Fan Power
Power Supply Fan
CPU Fan Power
GND Rotation +12V
R
GND
Rotation
+12V
Rotation
GND
+12V
12. Modem Connector (4-pin MDM) (with optional onboard audio)
These connector connects to a compatible modem.
R
Onboard Modem Connector
Modem-In
Ground
Modem-Out
Ground