Asus Q87I-PLUS/CSM Manual page 60

Chassis1 Fan Profile [Standard]
This item appears only when you enable the Chassis1 Q‑Fan Control feature and allows you
to set the appropriate performance level of the Chassis1 fan.
[Standard]
[Silent]
[Turbo]
[Manual]
The following four items appear only when you set Chassis1 Fan Profile to [Manual].
Chassis1 Upper Temperature [70]
Use the <+> and <‑> keys to adjust the upper limit of the chassis temperature. The
values range from 40ºC to 75ºC.
Chassis1 Fan Max. Duty Cycle(%) [100]
Use the <+> and <‑> keys to adjust the maximum chassis fan duty cycle. The values
range from 60% to 100%. When the chassis temperature reaches the upper limit, the
chassis fan will operate at the maximum duty cycle.
Chassis1 Lower Temperature [40]
Displays the lower limit of the chassis temperature.
Chassis1 Fan Min. Duty Cycle(%) [60]
Use the <+> and <‑> keys to adjust the minimum chassis fan duty cycle. The values
range from 60% to 100%. When the chassis temperature is under 40ºC, the chassis
fan will operate at the minimum duty cycle.
2.7.6 Anti Surge Support [Disabled]
This item allows you to enable or disable the Anti Surge function.
Configuration options: [Disabled] [Enabled]
2‑32
Sets to [Standard] to make the Chassis1 fan automatically adjust
depending on the Chassis1 temperature.
Sets to [Silent] to minimize the fan speed for quiet Chassis1 fan operation.
Sets to [Turbo] to achieve maximum Chassis1 fan speed.
Sets to [Manual] to assign detailed fan speed control parameters.
Chapter 2: Getting started