SuperSpeed USB 3.0 High-speed file transfers at 5 Gbps - almost ten times faster than USB 2.0 4 x USB 3.0 ports Fully backwards compatible with USB 2.0 and USB 1.1 devices Efficient Charging Able to charge four smartphones or tablets (including iPads) simultaneously Easy To Use Plug and Play Sync-n-go minimises user wait-time Works on Windows, Mac and Linux computers Sleek and Portable Design Slim and lightweight Fits easily in your laptop, backpack or briefcase Technical Specifications General Standards USB specification version 3.0 (data rates of up to 5 Gbps) OHCI xHCI USB 1.1 USB 2.0 USB 3.0 Interfaces 4 downstream USB Type A (female) ports 1 upstream USB Type Micro-B (female) port Connectivity Rules Up to 127 devices Up to five cascaded hubs Maximum cable length between each hub: 3 m Compatibility Windows 10 / 8 / Win 8 RT / 7 / Vista / XP Mac OS Linux Physical Dimensions 75 x 51 x 14.5 mm (2.9 x 2.0 x 0.57 inches) Weight 60 grams (2.12 ounces) Power External power adapter 5 V / 4 A Supplied: Maximum 2.4 A per port1 (with external AC adapter) Temperature Operating: 0 to 50 °C (32 to 122 °F) Storage: -20 to 60 °C (-4 to 140 °F) Operating Humidity 0% to 80% non-condensing Certifications CE FCC