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Asus M3N78-EH User Manual

Page 40

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1-28

Chapter 1: Product introduction

4. CPU and Chassis Fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN)

The fan connectors support cooling fans of 350mA~740mA (8.88W max.) or

a total of 1A~2.22A (26.64W 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.

Only CPU Fan connector supports Q-Fan function.

M3N78-EH Fan Connectors

R

M3N78-EH

CPU_FAN

GND

CPU FAN PWR

CPU FAN IN

CPU FAN PWM

CHA_FAN

GND

Rotation

+12V

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.

5. Optical drive audio in connector (4-pin CD)

This connector allows you to receive stereo audio input from sound sources

such as a CD-ROM, TV tuner, or MPEG card.

M3N78-EH Internal Audio Connector

R

M3N78-EH

CD

(black)

Right

Audio Channel

Lef

tA

udio Channel

Ground Ground