Device connector for external power input.

Cable carrying power from a power supply.

Inductor used in power-conversion circuits.

Button used to control system power state.

Ability to detach unused power-supply cables.

Capacitor used for filtering or energy storage.

Motherboard connector for a power-status LED.

Power supply with detachable output cables.

Transistor designed for higher power handling.

Motherboard pins connecting the case power button.