BobjGear 4 Port USB 3.0 Powered Hub for your Tablet, Laptop, Chromebook, TV Stick Supports all Microsoft Windows versions, MAC OSx 10.2 or above, Linux, ChromeOS, and compatible Android Tablets, Chromebooks, Android TV Sticks Super-Speed USB 3.0 ports can provide max data transfer rates up to an amazing 5 Gbps. Your actual speeds will be governed by your devices' speeds. The 4th USB Port provides Fast Charging mode when your PC is sleeping or turned off. (BC 2.1 battery charging specification) Built in micro-surge protector in each port to protect your PC or Tablet. Cool Blue LEDs display the status of each port. Backward compatible with USB 2.0, USB 1.1, USB 1.0. Supports Plug and Play and Hot Swapping. This USB Data Hub is not a 4 port A/C charging station. Its purpose is to enable you to attach more USB devices to your PC or compatible Android Tablet. Includes Two Year Product Warranty and Lifetime BobjGear Technical Support.