Essential accessory soon as the outside temperature exceeds 25 ° (C) .Evite untimely stoppages of overheating in full work task which moreover damaged and reduce the life of the components in your laptop. Terribly efficient and virtually silent. Essentially constructed of metal the device is very robust and stable your computer will not slip on it. Defects: standard size for 17 '', it lacks a few cm in width (but it works anyway) and when a WiFi system to release a USB port so useful to other accessories. Despite scorching temperatures, operating days without unexpected shutdown, mission accomplished.