How to install a fan in a computer motherboard case

1.First, determine the size and type of fan you want to install (e.g., a 120mm silent fan).2.Open your computer's motherboard case and locate where you want to install the fan. Usually, there are fan mounting locations on the front and back of the motherboard case.3. Plug the fan into the fan socket on the motherboard. If you do not have an available fan socket on your motherboard, you can use a power plug to connect the fan.4. Secure the fan to the motherboard case. Usually, the fan comes with screws and washers. Place the washers on the screws and insert the screws into the fan holes in the main case.5. Make sure that the fan is securely installed and that it does not vibrate or make noise while it is running.6. Turn off the computer's main case and reconnect all cables and devices.7. Start the computer and check that the fan is working properly. You can use computer hardware monitoring software to monitor the fan speed and temperature.