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Chapter 3: BIOS setup
Chapter 3
Chassis Fan 1/4 Q-Fan Control [DC Mode]
These items allow you to set the chassis fans’ Q-Fan control feature into DC Mode, PWM
Mode, or disable these Q-Fan controls from your motherboard.
Conguration options: [Disabled] [DC Mode] [PWM Mode]
The following items appear only when you set the Chassis Fan 1/4 Q-Fan Control to [PWM
Mode] or [DC Mode].
Chassis Fan 1/4 Q-Fan Source [CPU]
This item controls the assigned fan according to the selected temperature source.
Conguration options: [CPU] [MB] [VRM] [PCH] [T_SENSOR1] [EXT_SENSOR1]
[EXT_SENSOR2] [EXT_SENSOR3]
If you select T_SENSOR1, plug a thermistor cable to T_SENSOR1 header and stick the
thermistor cable’s head to the desired component as the temperature source.
Chassis Fan 1/4 Speed Low Limit 1/4 [300 RPM]
This item allows you to disable or set the chassis fans’ warning speed.
Conguration options: [Ignore] [200 RPM] [300 RPM] [400 RPM] [500 RPM] [600 RPM]
Chassis Fan 1/4 Profile [Standard]
This item allows you to set the appropriate performance level of the chassis fan.
[Standard] Set to make the chassis fan adjust automatically depending on the
chassis temperature.
[Silent] Set to minimize the fan speed for quiet chassis fan operation.
[Turbo] Set to achieve maximum chassis fan speeds.
[Manual] Set to assign detailed fan speed control parameters.
The following items appear only when you set the Chassis Fan Prole to [Manual].
Chassis Fan 1/4 Upper Temperature [70]
Use the <+> or <-> keys to adjust the upper limit of the CPU temperature.
The values range from 40°C to 90°C.
Chassis Fan 1/4 Max. Duty Cycle(%) [100]
Use the <+> or <-> keys to adjust the maximum chassis fan duty cycle. The
values may differ via Qfan tuning.
Chassis Fan 1/4 Middle Temperature [45]
Use the <+> or <-> keys to set the value for Chassis Fan Middle
Temperature.
Chassis Fan 1/4 Middle Duty Cycle(%) [60]
Use the <+> or <-> keys to adjust the chassis fan middle duty cycle. The
values may differ via Qfan tuning.
Chassis Fan 1/4 Lower Temperature [40]
Use the <+> or <-> keys to adjust the chassis fans’ lower temperature. The
values may differ via Qfan tuning.