What is CHA FAN doing there?

CHA_FAN refers to the chassis fan headers on a motherboard. These headers are used to connect and control the speed of the case fans in a computer system. The number associated with CHA_FAN (such as CHA_FAN1, CHA_FAN2, etc.) indicates the availability of multiple chassis fan headers on the motherboard.

By connecting the case fans to these CHA_FAN headers, you can regulate the fan speed and adjust the airflow inside the computer case. This allows you to manage the cooling of various components, such as the CPU, GPU, and other heat-generating parts. Proper cooling is essential to maintain optimal performance and prevent overheating, which can lead to stability issues or hardware damage.

Typically, these CHA_FAN headers provide voltage regulation or pulse width modulation (PWM) control, depending on the motherboard model. PWM control allows for more precise fan speed adjustment, while voltage regulation adjusts the fan speed by varying the voltage supplied to the fan.

To control and monitor the fans connected to the CHA_FAN headers, you can use motherboard software or BIOS settings. This enables you to customize the fan curves, set specific fan speeds, and monitor the fan RPM (revolutions per minute) for optimal cooling performance.


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