... Pretty Flower 4 Port USB Hub Driver Specification Innovative designWith 4 USB portsSupport hot plug, easy to useSupport USB2.0 and 1.1 versions Support ... without driverApply to the U disk, camera, card reader, USB mouse, USB keyboards, scanners, digital cameras, digital cameras, audio systems, ... 2-3 days without logo printing; 3-5 days with logo printingProductions: 1000pcs in 3-5 days, 5000pcs ...