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6) CPU_OPT (CPU Fan/Water Cooling Pump Header)
The fan/pump header is 4-pin and possesses a foolproof insertion design. Most fan headers possess a
foolproof insertion design. When connecting a fan cable, be sure to connect it in the correct orientation
(the black connector wire is the ground wire). The speed control function requires the use of a fan with fan
speed control design.
CPU_OPT
1
Pin No.
Definition
1
GND
2
Voltage Speed Control
3
Sense
4
PWM Speed Control
Connector
CPU_FAN
SYS_FAN1~4
FAN5/6_PUMP
CPU_OPT
Maximum Current
2A
2A
2A
2A
Maximum Power
24W
24W
24W
24W
•• Be sure to connect fan cables to the fan headers to prevent your CPU and system from
overheating. Overheating may result in damage to the CPU or the system may hang.
•• These fan headers are not configuration jumper blocks. Do not place a jumper cap on the
headers.
7) EC_TEMP1/EC_TEMP2 (Temperature Sensor Headers)
Connect the thermistor cables to the headers for temperature detection.
1
Pin No.
Definition
1
SENSOR IN
2
GND
EC_TEMP2
EC_TEMP1
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