Gigabyte X299-WU8 User Manual page 29

8) HPWR_FAN_PUMP (3 Amp 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. The header also provides speed control for a water cooling pump, refer to Chapter
2, "BIOS Setup," "M.I.T.," for more information.
Because a 3 Amp fan can run very fast, DO NOT touch it when it is operating to avoid injury.
9) EC_TEMP1/EC_TEMP2 (Temperature Sensor Headers)
Connect the thermistor cables to the headers for temperature detection.
Pin No. Definition
1 GND
2 Voltage Speed Control
1
3 Sense
4 PWM Speed Control
Pin No. Definition
1
1 SENSOR IN
EC_TEMP1
2 GND
1
EC_TEMP2
- 29 - Hardware Installation