Gigabyte GA-M57SLI-S4 User Manual page 48

CPU Smart FAN Control
Disabled Disable this function.
Enabled When this function is enabled, CPU fan will run at different speed depending on
CPU temperature. Users can adjust the fan speed with Easy Tune based on
their requirements. (Default value)
CPU Smart FAN Mode
This option is available only when CPU Smart FAN Control is enabled.
Auto BIOS autodetects the type of CPU fan you installed and sets the optimal CPU
Smart FAN control mode for it. (Default Value)
Voltage Set to Voltage when you use a CPU fan with a 3-pin fan power cable.
PWM Set to PWM when you use a CPU fan with a 4-pin fan power cable.
(Note) Whether the CPU Smart FAN Control function is supported will depend on the CPU you install.
GA-M57SLI-S4 Motherboard
(Note)
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