High-efficiency PSU certification level.

Fan expelling air from a computer case.

Device converting incoming electrical power into usable computer voltages.

Very high-efficiency PSU certification level.

Heatsink cooling motherboard voltage-regulation components.

Material blocking dust from entering a computer case.

Power Supply Unit.

Highest traditional 80 PLUS certification tier.

Heatsink cooling motherboard chipset circuitry.

Protective structure covering a fan opening.