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* Compliant with USB version 2.0 and backward compatible with USB 1.1
* USB bus powered
* Support 4 USB devices at the same time.
* Supports Windows98, ME, 2000, NT, XP, Vista, Mac OS X, and Linux OS, No need driver under Windows 98, ME, 2000, XP, Vista OS
* Supports both OHCI and UHCI specifications
* Plug-and-play and hot swapping functions
* Over-current detection and protection for each downstream port