Asus A88X-PRO - Manual (Page 95)

3-24 Chapter 3: BIOS setup
Chapter 3
CHA_FAN1/2/3/4 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.
CHA_FAN1/2/3/4 Lower Temperature [40]
Displays the lower limit of the chassis temperature.
CHA_FAN1/2/3/4 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.
Anti Surge Support [Enabled]
This item allows you to enable or disable the Anti Surge function. Configuration options:
[Disabled] [Enabled]