Sienoc 7-Port USB 3.0 Hub Portable Multi-Port USB 3.0 Desktop Hub Powered for Mac, Windows, and Any PC Interface:USB 3.0 ,compatible with USB 2.0 and USB 1.1 Data transfer rate :1.5Mbps/12Mbps/480Mbps up to 5 Gbps Bus-Power Limit current protection 500 mA to 900mA Support 2TB, Compatible with all Windows/Mac/Linux systems.