Power options some usb fans are battery powered.
Usb fan power usage.
Opolar 4 inch mini usb desk fan 2 speeds lower noise usb powered 360 up and down 3 8 ft cable powerful black fan for home and office 4 6 out of 5 stars 2 524 11 99 11.
A universal serial bus usb fan is any fan that makes use of a usb port for power.
The top countries of suppliers are china hong kong s a r and taiwan china from which the percentage of usb fan power consumption supply is 99 1 and 1 respectively.
Portable neck fan zoeetree upgraded hands free usb fan rechargeable mini personal fan portable fan for travel outdoor office sports fan with 10hs working time 3 speeds super quiet.
Usb ports are standard features on most modern computers on many other electronic devices such as video game consoles personal digital assistants pdas smartphones and digital video recorder dvr boxes.
Quiet model that uses four blades to maintain good air flow while not creating bothersome noise.
Amazoncommercial 6 inch table fan with power adapter and usb cable 4 4 out of 5 stars 415.
You can use rechargeable or disposable batteries to keep them running which is very convenient especially when you re nowhere near an outlet.