USB™ 3.0 SuperSpeed, 10 times faster transfer rate (5 Gbps), backwards compatible with USB™ 2.0 and USB™ 1.0 specifications Extends your MacBook® or notebook by 7 USB™ 3.0 ports with a single USB™ plug Elegant aluminum housing that is compact, non-toxic and recyclable One port supports fast charging for smartphones, tablets, iPad® up to 2.4A Supports USB™ bus-powered or DC self-powered for power hungry USB™ devices