EZOWare SuperSpeed USB 3.0 7-Port Hub with 4 Feet Cable and Power Adapter, Backward Compatible with USB 2.0/1.1 version Supports Windows OS and Mac OS X 7 Super-Speed USB 3.0 ports for your high-speed connectivity needs,10x faster than USB 2.0 Plug-n-Play, hot swappable and portable. Backward compatible with USB 2.0/1.1 specifications. 4 Feet Cable - flexible for desktop computers. External Power Adapter - for power hungry devices.