1.USB 4-Ports Hub 1.1/2.0 version                                   
2. USB hub powered and no external adapter is required.
3.Plug-and-Play,Driver is not required.                     
4.Support Window 98/2000/XP/Window 7                        
5. Wide used for external storage devices,Scanners,Printers,DVD Drives.CD-RM Drives,Digital Cameras/Camcorder