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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.
1
Pin No.
Definition
1
GND
2
Voltage Speed Control
3
Sense
4
PWM Speed Control
Connector
CPU_FAN
SYS_FAN1~4
SYS_FAN5~6_PUMP
CPU_OPT
Maximum Current
2A
2A
2A
2A
Maximum Power
24W
24W
24W
24W
7) EC_TEMP1/EC_TEMP2 (Temperature Sensor Headers)
Connect the thermistor cables to the headers for temperature detection.
Pin No.
Definition
1
SENSOR IN
2
GND
1
EC_TEMP2
1
EC_TEMP1
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