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34 chapter 1: product introduction, P5b-mx/wifi-ap fan connectors cpu_fan, Cha_fan – Asus P5B-MX/WIFI-AP User Manual

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Chapter 1: Product introduction

7. CPU and chassis fan connectors

(4-pin CPU_FAN, 3-pin CHA_FAN)
The fan connectors support cooling fans of 350 mA ~ 2000 mA (24 W max.)

or a total of 1 A ~ 7 A (84 W max.) at +12V. Connect the fan cables to the

fan connectors on the motherboard, making sure that the black wire of each

cable matches the ground pin of the connector.

Do not forget to connect the fan cables to the fan connectors. Insufficient air

flow inside the system may damage the motherboard components. These are

not jumpers! Do not place jumper caps on the fan connectors!

Only the CPU-FAN and CHA-FAN connectors support the ASUS

Advanced Q-Fan feature.

P

5

B

-M

X

/W

iF

i-

A

P

R

P5B-MX/WiFi-AP Fan Connectors

CPU_FAN

GND

CPU FAN PWR

CPU FAN IN

CPU FAN PWM

CHA_FAN

GND

Rotation

+12V