The bearings in the tiny fans allow for uneven rotation so this cooler will soon have you squeaking and pounding against it and anything you can think of to stop it. The ultra-cheap chassis grilles over each fan are made of thin, low-quality plastic that bends and breaks easily. This was the last time I bought a Targus product. They are not profitable and not worth owning as I found out after purchasing three different models of their laptop coolers.