
A power supply cooling fan is a small, dedicated fan (typically DC-powered) built into—or mounted onto—a power supply unit (PSU) to remove heat generated during its operation. Since power supplies convert and regulate electrical energy (e.g., AC→DC conversion, voltage regulation, and filtering), they naturally produce heat. Without adequate airflow, internal temperatures can rise, leading to reduced efficiency, increased electrical noise, and ultimately shortened component life or failure. Continue reading What is power supply cooling fan?