to be frank i haven't spent money on it so try it out
its portable too im using this on laptop its very useful to me. by adding an battery on it you can carry with you
Parts needed :-shown on below images
this fan is given me unexpected performance ,woh wind is cool and getting over half meter.
Note :-careful while connecting supply ,you should connect the +ve of motor to +ve of usb cable
and -ve as same.else it will rotate reverse direction so you wont get wind.