No driver installation required. Keep cool and display cool messages at your office or on the go with the USB LED Message Fan. Easy to Use : Program max . Message can be kept permanently even when the power is removed, 20 messages,20 letters per message Gooseneck Design : Soft fan blades for safe use, flexible neck,Gently adjust the flexible neck to position the cool breeze any direction you wish Great Gift Idea : Keep cool and display cool messages at your office or on the go with the USB LED Message Fan Usb led fan is cool design and convenience accessory in office, room and camping. Works on any USB outlet you could find, USB port PC, charging treasure, USB plug Features: 1. Gently adjust the flexible neck to position the cool breeze any where you wish. 2. Super compact and lightweight. 3. USB port powered, no external power supply needed. 4. Four phases messages loop display. 5. Durable soft fan blades for safe usage. 6. No driver, plug and play. 7. Convenient on/Off switch