Notebook Laptop Vacuum USB Case Cooling Fan Cooler Pad Notebook Laptop Vacuum USB Case Cooling Fan Cooler Pad 100% brand new and high quality World's first patented NB air extracting fan. It allows faster extraction of the hot air out of a running system, which stabilizes the operation of the NB and prolongs its lifetime. Universal clip for fastening USB power interfaces, compatible for all major NB brands. Weighted only 60g.compared with other NB cooling pads, it is very suitable for storage, and carry.