RGB Programmable: Plug the mini fan into the USB port of the computer (no data cable required), and the user can freely program the message and even change the color through the software. (The software is not compatible with the macOS system). Safety And Flexibility: Usb computer fan have PVC Soft fan blades and flexible neck for safe use.The neck can be twisted at will to position the cool breeze any direction you need. Widely Compatible: USB LED fan, cool design and convenience in office, room and camping. USB fan for laptop and power Bank and any USB outlet you could find. Easy To Carry: Mini usb fan, small size can be placed in a bag, now don't worry about hot summer day. Message can be kept permanently even when the power is removed. Scenario: Laptop fan, usb gadgets suitable as a gift for yourself, family, and friends. Use programming to write your blessings; It can even be used as a shop, counter, company slogan advertising.