Asus P5K SE EPU User Manual - Page 53
CPU, chassis, and power fan connectors, pin CPU_FAN, 3-pin CHA_FAN, 3-pin PWR_FAN, Serial port - cpu support
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P5K SE/EPU GND CPU FAN PWR CPU FAN IN CPU FAN PWM GND +12V Rotation GND +12V Rotation 7. CPU, chassis, and power fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN, 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_FAN P5K SE/EPU Fan connectors Only the CPU_FAN and CHA_FAN connector support the ASUS Q-FAN 2 feature. 8. Serial port connector (10-1 pin COM1) This connector is for a serial (COM) port. Connect the serial port module cable to this connector, then install the module to a slot opening at the back of the system chassis. COM1 PIN 1 ® P5K SE/EPU P5K SE/EPU COM port connector The serial port module is purchased separately. ASUS P5K SE/EPU 2-31