USB 3.0 Hub, Rocketek 4-Port USB3 Hub With a Built-in USB 3.0 Cable and a Extra Micro USB Charging Port Support for Support for Android, Apple iOS, and Windows Mobile Devices USB 3.0 4-Port Hub with transmission speed of max. 5Gb/s without power adapter ( passive ) | backwards compatible up to USB 2.0, 1.1 and 1.0 | USB cable length: 30 cm | Plug and Play | Hot-plugged Easily add 4 USB 3.0 ports to your Macbook, Laptop, ultrabook and tablet PC. Works with USB extension cable. USB Hub with 1 USB Type A plug ( male ) / 4 USB Type A socket ( female ) and cable | bus-powered (power supply via USB socket on PC/notebook) | Extra Micro B Powered Compatible with most Windows 10, 8.1, 8, 7, Vista, XP, Mac OS X, and Linux / Unix systems. Integrated over-voltage, leakage current and breakdown protection, optimal protection of the periphery and the hubs | Supports hot-swapping | No drivers needed The extra Micro B power helps you to charge effectively for high-power devices, such as your tablet or iPad and mobile phones.