Nihao&reg; Portable Adjustable Mini Air Extracting USB Cooling Fan Cooler for Laptop This laptop cooling fan allows faster extraction of the hot air out of a running system, which stabilizes the operation of the notebook and prolongs its lifetime 3 different sizes of silicon sleeve included for fastening to air outlet, compatible for all major notebook brands. Compact,game style , innovative,anti skip design,Let you enjoy your laptop/notebook without worry overheat Fast and quick temperature subside,Reduce 10c just 10 second,Support various Size 15in to 17 inch Laptop/Notebook Great laptop cooling fan for overheat laptop when playing game,Support various Size 15in to 17 inch Laptop/Notebook