Asus B85M-E Manual page 63

Chassis1/2 Fan Profile [Standard]
This item appears only when you enable the Chassis1/2 Q-Fan Control feature and allows
you to set the appropriate performance level of the chassis1/2 fan.
[Standard]
[Silent]
[Turbo]
[Manual]
The following four items appear only when you set Chassis1/2 Fan Profile to [Manual].
Chassis1/2 Upper Temperature [70]
Use the <+> and <-> keys to adjust the upper limit of the Chassis1/2 temperature. The
values range from 40ºC to 75ºC.
Chassis1/2 Fan Max. Duty Cycle(%) [100]
Use the <+> and <-> keys to adjust the maximum chassis1/2 fan duty cycle. The
values range from 60% to 100%. When the chassis1/2 temperature reaches the upper
limit, the chassis1/2 fan will operate at the maximum duty cycle.
Chassis1/2 Lower Temperature [40]
Displays the lower limit of the chassis1/2 temperature.
CHASSIS1/2 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]
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Sets to [Standard] to make the chassis1/2 fan automatically adjust
depending on the chassis1/2 temperature.
Sets to [Silent] to minimize the fan speed for quiet chassis1/2 fan operation.
Sets to [Turbo] to achieve maximum chassis1/2 fan speed.
Sets to [Manual] to assign detailed fan speed control parameters.
Chapter 2: Getting started