... 4 port USB HUB 1. 4 ports usb hub 2. New design as ruler 3. plug to play &convenience 4. packing,logo customized new 4 ... port USB HUBFeatures:4 ... 7/Mac 05 X 9.0/ Linux 2.4 later version.direct plug and play, No ... such as mouse ,keyboard,speaker, card reader, MP3/4, U disk, Camera,ect.Provide up to 500mA ...