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34 ASUS CUV4X-C User’s Manual
3. HARDWARE SETUP
Connectors
3. H/W SETUP
6) CPU and Chassis Fan Connectors
The two 3-pin fan connectors (CPU_FAN, CHA_FAN) support cooling fans of
350mA (4.2 Watts) or less. Orient the fans so that the heat sink fins allow airflow
to go across the onboard heat sink(s) instead of the expansion slots. The fan
wiring and plug may vary depending on the fan manufacturer. The red wire
should be positive while the black should be ground. Connect the fan plug to the
board taking into consideration the polarity of the connector.
NOTE: Use the “Rotation” signal only with a specially designed fan with a rotation
signal. The Rotations Per Minute (RPM) can be monitored using ASUS PC Probe
(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.
7) USB Header (10-1 pin USBPORT) (optional)
If the USB port connectors on the back panel are inadequate, one USB header is
available for two additional USB port connectors. Connect the USB header to a
2-port USB connector set and mount the bracket to an open slot on the chassis.
(The USB connector set does not come with the motherboard package.)
CUV4X-C 12-Volt Cooling Fan Power
CPU_FAN
CHA_FAN
GND
Rotation
+12V
GND
Rotation
+12V
®
CUV4X-C
CUV4X-C Front Panel USB Header
USBPORT
USB Power
USBP2–
USBP2+
GND
NC
USB Power
USBP3–
USBP3+
GND
15
610
®
CUV4X-C