Asus Gryphon Z97 Manual page 114

Fan Overtime [1 minutes]
This item allows you to set a time (in minutes) of the assistant fans' operation prior to
system shutdown. These assistant fans dissipate any remaining heat and extend the critical
component's longevity, dissipating heat as much as 7°C in just 10 minutes.
Configuration options: [Disabled] [1 minute] [3 minutes] [5 minutes] [10 minutes]
Anti Surge Support [Enabled]
This item allows you to enable or disable the OVP (Over Voltage Protection) and UVP (Under
Voltage Protection) functions. This causes the system to automatically shut down when the
voltage exceeds the safe range that protects the motherboard's components.
Configuration options: [Disabled] [Enabled]
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ASST Fan 1 Min. Duty Cycle(%) [60]
Use the <+> or <-> keys to adjust the minimum assistant fan duty cycle.
The values may differ via Qfan tuning.
Allow Fan Stop 1 [Disabled]
These items allow the assistant fans to run at 0% duty cycle when the
temperature of the source is dropped below the lower temperature.
Configuration options: [Disabled] [Enabled]
Chapter 3: BIOS setup