Asus A7V-M User's Guide download pdf (Page 30)

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Chapter 1: Product introduction

7. CPU and chassis fan connectors (3-pin CPU_FAN, CHA_FAN)

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

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. 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!

A7V400-MX

A7V400-MX 12-Volt Fan Connectors

CPU_FAN

CHA_FAN

GND

Rotation

+12V

GND

Rotation

+12V

A7V400-MX

A7V400-MX Chassis Alarm Lead

CHASSIS

+5VSB_MB

Chassis Signal

GND

(Default)

8. Chassis intrusion connector (4-1 pin CHASSIS)

This lead is for a chassis designed with intrusion detection feature. This

requires an external detection mechanism such as a chassis intrusion sensor

or microswitch. When you remove any chassis component, the sensor triggers

and sends a high-level signal to this lead to record a chassis intrusion event.

By default, the pins labeled “Chassis Signal” and “Ground” are shorted with a

jumper cap. If you wish to use the chassis intrusion detection feature, remove

the jumper cap from the pins.

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Asus A7V-M User's Guide Page 30