Asus Z170-WS Manual page 124

Extension Fan 1-3 Profile [Standard]
This item allows you to set the appropriate performance level of the CPU fan.
[Standard]
[Silent]
[Turbo]
[Manual]
The following items appear only when you set the Extension Fan Profile to [Manual].
Water Pump Control [Disabled]
[Disabled]
[DC mode]
[PWM mode]
3-50
Set to make the CPU fan adjust automatically depending on the CPU
temperature.
Set to minimize the fan speed for quiet CPU fan operation.
Set to achieve maximum CPU fan speed.
Set to assign the detailed fan speed control parameters.
Extension Fan 1-3 Upper Temperature [70]
Use the <+> or <-> keys to adjust the upper limit of the Extension Fan 1-4
temperature. The values range from 20 to 75.
Extension Fan 1-3 Max. Duty Cycle (%) [100]
Use the <+> or <-> keys to adjust the maximum Extension Fan 1-4 duty
cycle. The values range from 20% to 100%. When the CPU temperature
reaches the upper limit, the Extension Fan 1-4 will operate at the maximum
duty cycle.
Extension Fan 1-3 Middle Temperature [45]
Use the <+> or <-> keys to adjust the middle limit of the Extension Fan 1-4
temperature. The values range from 20 to 75.
Extension Fan 1-3 Middle. Duty Cycle (%) [60]
Use the <+> or <-> keys to adjust the maximum Extension Fan 1-4 duty
cycle. The values range from 20% to 100%. When the CPU temperature
reaches the upper limit, the Extension Fan 1-4 will operate at the maximum
duty cycle.
Extension Fan 1-3 Lower Temperature [40]
Use the <+> or <-> keys to adjust the lower limit of the Extension Fan 1-4
temperature. The values range from 20 to 75. The Extension Fan 1-4 will
operate at the minimum duty cycle when the temperature is lower than the
limit.
Extension Fan 1-3 Min. Duty Cycle(%) [60]
Use the <+> or <-> keys to adjust the minimum Extension Fan 1-4 duty
cycle. The values range from 0% to 100%. When the CPU temperature
is under the limit, the Extension Fan 1-4 will operate at the minimum duty
cycle.
Disable the Water Pump control feature.
Enable the Water Pump control in DC mode for 3-pin chassis fan.
Enable the Water Pump control in PWM mode for 4-pin chassis fan.
Chapter 3: BIOS Setup