Stand usb mini computer fan
No external power supply needed
Power supply: 5V DC from the USB port
Less noise and less heat operation
Provide cool wind in hot weather
For PC/notebook with USB port
Portable and easy to use
see more usb fan, usb lamps,usb gadgets,please visit:
http://www.usb-supplier-china.com/Chinese-USB-manufacturers-USB-Gifts-&Gadgets-&Toys18.htm