internal computer component that provides power to other components
An ATX power supply unit with top cover removed
A power supply unit (PSU) converts mains AC to low-voltage regulated DC power for the internal components of a desktop computer. Modern personal computers universally use switched-mode power supplies. Some power supplies have a manual switch for selecting input voltage, while others automatically adapt to the main voltage.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).