Asus P5E WS PRO Motherboard Installation Guide - Page 58
CPU, chassis, and power fan connectors, pin CPU_FAN, 3-pin CHA_FAN1-4, 3-pin PWR_FAN, Chassis
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9. CPU, chassis, and power fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN1-4, 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 PWR_FAN CHA_FAN1 GND +12V Rotation CPU FAN PWM CPU FAN IN CPU FAN PWR GND Rotation +12V GND ® P5E64 WS EVOLUTION CHA_FAN3 Rotation +12V GND CHA_FAN4 Rotation +12V GND CHA_FAN2 GND +12V Rotation P5E64 WS Evolution Fan connectors Only the CPU-FAN and CHA-FAN 1-2 connectors support the ASUS Q-FAN 2 feature. 10. Chassis intrusion connector (4-1 pin CHASSIS) This connector is for a chassis-mounted intrusion detection sensor or switch. Connect one end of the chassis intrusion sensor or switch cable to this connector. 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. GND Chassis Signal +5VSB_MB 2-32 ® P5E64 WS EVOLUTION CHASSIS (Default) P5E64 WS Evolution Chassis intrusion connector Chapter 2: Hardware information