III.INSTALLATION

9.Chassis / CPU / Power Supply Fan Connectors (3-pin FAN)

These connectors support cooling fans of 500mA (6W) or less. Orientate the fans so that the heat sink fins allow airflow to go across the onboard heat sink(s) instead of the expansion slots. Depending on the fan manufacturer, the wiring and plug may be different. The red wire should be positive, while the black should be ground. Connect the fan’s plug to the board taking into consideration the polarity of the this connector.

NOTE: The “Rotation” signal is to be used only by a specially designed fan with rotation signal.

WARNING! The CPU and/or motherboard will overheat if there is no airflow across the CPU and onboard heatsinks. Damage may occur to the motherboard and/or the CPU fan if these pins are incorrectly used. These are not jumpers,

do not place jumper caps over these pins.

Power Supply Fan

CPU Fan Power

Chassis Fan Power

Rotation +12V GND

P2B 12Volt Cooling Fan Power

10.Chassis Intrusion Alarm Lead (4-1 pin CHASIS)

This requires an external detection mechanism such as a chassis intrusion moni- tor/sensor or microswitch. The sensor is triggered when a high level signal is sent to the CHASIS lead. This occurs when the side panel is opened or drive bay doors are opened.

NOTE: When the chassis is opened, connect/short the Chassis Signal pin to the +5VSB pin. When the chassis is opened, connect/short the Chassis Signal pin to the Ground pin.

+5VSB

Chassis Signal

Ground

P2B Chassis Intrusion Alarm Lead

INSTALLATION

Connectors

III.

 

 

 

ASUS P2B User’s Manual

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