Asus Maximus IV GENE-Z - Manual (Page 121)

ROG Maximus IV GENE-Z 3-33
Chassis Lower Temperature [40]
Displays the lower limit of the chassis temperature.
Chassis Fan Min. Duty Cycle(%) [60]
Use the <+> and <-> keys to adjust the minimum chassis fan duty cycle. The values
range from 0% to 100%. When the chassis temperature is under 40ºC, the chassis
fan will operate at the minimum duty cycle.