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36 ASUS A7V266 User’s Manual
3. HARDWARE SETUP
Connectors
3. H/W SETUP
11) CPU Fan, Power Fan, and Chassis Fan Connectors
(CPU_FAN, PWR_FAN, CHA_FAN)
The three fan connectors 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 sinks instead of the expansion slots. The fan wiring and plug may vary
depending on the fan manufacturer. Connect the fan cable to the connector making
sure that the black wire matches the ground pin. (NOTE: Use the “Rotation”
signal only with a specially designed fan with a rotation signal. You can monitor
the Rotations Per Minute (RPM) using ASUS PC Probe (see 6. SOFTWARE
REFERENCE).
12) USB Headers (10-1 pin USB2_3, USB4_5)
If the USB port connectors on the back panel are inadequate, two USB headers
are available for four additional USB port connectors. Connect a 2-port USB
connector set to a USB header and mount the USB bracket to an open slot in the
chassis. (The USB connector set is optional and does not come with the
motherboard package.)
A7V266
01010 1
A7V266 12-Volt Cooling Fan Power
PWR_FAN
CPU_FAN
CHA_FAN
GND
Rotation
+12V
GND
Rotation
+12V
A7V266
01010 1
A7V266 Front Panel USB Headers
USB Power
USBP2–
USBP2+
GND
NC
USB Power
USBP3–
USBP3+
GND
15
610
USB2_3
USB4_5
WARNING! Make sure to connect the fan cables to the fan connectors. Lack of
sufficient airflow within the system could cause damage to the motherboard.
These are not jumpers, do not place jumper caps over these connectors!