3.HARDWARE SETUP

13)CPU Fan, North Bridge Fan, and Chassis Fan Connectors (CPU, NB, 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. 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. Monitor Rotations Per Minute (RPM) using ASUS PC Probe (see 6. SOFTWARE REFERENCE).

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!

A7N266

CHA_FAN GND

+12V

Rotation

CPU_FAN GND

+12V

 

Rotation

NB_FAN

GND

+12V

 

Rotation

A7N266 12-Volt Cooling Fan Power

14) 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.)

A7N266

USB45 USB23

GND USBP5+ USBP5– USB Power

6

10

GND

USBP3+

USBP3–

USB Power

10

 

 

 

6

5

1

5

 

 

 

1

NC GND USBP4+ USBP4– USB Power

 

NC

GND

USBP2+

USBP2–

USB Power

A7N266 Front Panel USB Headers

Connectors

3. H/W SETUP

ASUS A7N266 User’s Manual

37