A small fan (20 cm), which does not clutter the desktop and I find really quiet! Do not expect to refresh the whole room with: it is a USB fan that exudes a gentle breeze. I was looking for a device that allows me to not suffer the heat from my laptop I am working many hours at a stretch. So I found exactly what I needed. A little more with the USB hub, this is not why I chose it but I have not taken a lot of this computer, I have plugged my mouse. (Given the other reviews I will not try anything else). Good purchase, fast delivery. I'm not disappointed. PS: if not, I put fingers ... it is not so bad :)