Asus B85M-G R2.0 Instructions Manual page 62

The following four items appear only when you set Chassis Fan 1/2 Profile to [Manual].
Chassis Fan 1/2 Upper Temperature [70]
Use the <+> and <‑> keys to adjust the upper limit of the Chassis temperature. The
values range from 40ºC to 75ºC.
Chassis Fan 1/2 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.
Chassis Fan 1/2 Lower Temperature [40]
Displays the lower limit of the chassis temperature.
Chassis Fan 1/2 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 [Enabled]
This item allows you to enable or disable the Anti Surge function.
Configuration options: [Disabled] [Enabled]
2‑32 Chapter 2: Getting started