Feature: 3 USB ports HUB, innovated round circle design. Hi-speed charging and data transferring with smart currency sorting for different wattage devices. Extension ports:USB2.0 -- 3 Port. Compatible devices: Win 7/8/10/Vista/Mac OS10.6 and above. No need to drive and support hot plug. Support USB and extended USB power, protection for over currency and voltage inside. Theoretically, transfer speed can up to 480Mbps. Indicator light. USB2.0 port rated power supply ≤ 500mA.