I was looking for a fan for 17 inch laptop not too expensive and that allows me to continue to use my pc on knees This is exactly what I was looking for: just the right size: My 17 'is slightly above the fan to cool but the parties are well placed above It ventilates very well, more than inadvertent trip of problem due to overheating No annoying to have it on the PC to keep it on the knees And "USB tip" connecting the fan to the PC itself serves as a USB port, so no port loss, knowing that on laptops there always has just the number or barely enough is a good point . In short highly recommend (finally freshly ;-))