Prevent your Nintendo Wii from overheating! Powered by a quiet and efficient cooling fan, the Nintendo Wii Mini Power Cooling System can effectively cool down the Nintendo Wii and prolong the life of the internal components. The Nintendo Wii Mini Power Cooling system draws power thru the two USB ports on the Wii, and include on-off switch to turn on the Cooling System. The Cooling System also has an indicator light when the unit is active. This is a must have item for any Wii owners!