Asus Understanding Chassis Intrusion Connectors and Fan Connectors for Motherboards

8.CPU, chassis, and power fan connectors

(4-pin CPU_FAN, 3-pin CHA_FAN1, 3-pin PWR_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!

CPU_FAN

GND

CPU FAN PWR

CPU FAN IN

CPU FAN PWM

PWR_FAN

Rotation

+12V

GND

	CHA_FAN1
P5Q-EM DO	Rotation
	+12V

P5Q-EM DO fan connectorsGND

Only the 4-pin CPU_FAN connectors support the ASUS Advanced Q-Fan feature. This motherboard does not support 3-pin CPU fan.

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

This connector is for a chassis-mounted intrusion detection sensor or switch. The chassis intrusion sensor or switch sends a high-level signal to this connector when a chassis component is removed or replaced. The signal is then generated as a chassis intrusion event.

By default , the pin labeled “Chassis Signal” and “ Ground” are shorted with a jumper cap. Remove the jumper caps only when you intend to use the chassis intrusion detection feature.

P5Q-EM DO

+5VSB_MB	Chassis Signal GND
	CHASSIS

P5Q-EM DO Chassis intrusion connector

ASUS P5Q-EM DO 1-33

P5Q-EM DO.indb 33

12/9/08 12:34:48 PM