Computer cooling fans are essential components in computers that help regulate temperature. They work by drawing in cool air and expelling hot air, preventing overheating of critical parts like the CPU and GPU. This cooling process ensures that the computer operates efficiently and prolongs its lifespan. These fans come in various sizes and designs, often mounted inside the computer case or on specific components. They can be powered by the computer's power supply and are usually controlled by the system's BIOS or software. Proper airflow and fan placement are crucial for optimal cooling performance.