Answer:
Power Supply
Explanation:
A power supply unit in a Desktop PC converts AC power from the mains to low-voltage DC power needed by the computer. The power supply, commonly referred to as the PSU, is the metal box usually found in the corner of the case connected to the power through a cord. The PSU uses the switcher technology to convert AC input to DC. The typical voltages used are 3.3, 5, and 12 volts.
