Asus P5K SE - Manual (Page 55)

ASUS P5K SE 2-31
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!
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.
The serial port module is purchased separately.
P5K SE
®
P5K SE Fan connectors
CPU_FAN
GND CPU F
AN PWR
CPU F
AN IN
CPU F
AN PWM
GND Rotation +12V
CHA_FAN PWR_FAN
GND Rotation +12V
P5K SE
®
P5K SE COM port connector
PIN 1
COM1