5.CPU, Chassis, and Power Fan Connectors (3-pin CPU_FAN, CH_FAN, PWRFAN)

The three fan connectors support cooling fans of 350~740mA (8.88W max.) or a total of 1~2.22A (26.64W max.) at +12V. Orient the fans so that the heat sink fins allow air flow 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 matching the black wire to the ground pin.

Do not forget to connect the fan cables to the fan connectors. Lack of sufficient air flow within the system may damage the motherboard components. These are not jumpers! DO NOT place jumper caps on the fan connectors!

CPU_FAN

PWRFAN

P4B266-C

CH_FAN

P4B266-C 12-Volt Fan Connectors

Rotation

+12V

GND

 

 

 

 

 

 

 

 

 

Rotation

+12V

GND

 

 

 

 

 

 

 

 

 

 

 

Rotation

+12V

GND

6.USB Header (10-1 pin USB11_23)

If the USB port connectors on the rear panel are inadequate, a USB header is available for two additional USB port connectors. Connect a 2-port USB connector set to the USB header and mount the USB bracket to an open slot in the chassis.

USB11_23

USB Power

USBP3–

USBP3+

GND

10 6

51

P4B266-C

USB Power

USBP2–

USBP2+

GND

NC

P4B266-C USB Header

ASUS P4B266-C motherboard user guide

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