What is a PSUpower supply unit?

A PSU, or power supply unit, is a critical component in a computer that converts electrical power from an outlet into usable power for the internal components. It supplies the necessary voltage and current to the motherboard, CPU, graphics card, and other peripherals. PSUs come in various wattage ratings to accommodate different system requirements, and they often include features like modular cables for better organization and airflow. Additionally, they are designed to ensure stable and efficient power delivery while providing protection against electrical surges and other issues.