E-More&reg; Super Speed 5Gbps 4 Ports Ultra-Thin USB 3.0 HUB Splitter Adapter with LED Indication For Laptop DeskPCApple Macbook Pro Mac PC Surface Pro Sleek compact design makes it an excellent choice for use with laptops, but it will perform equally well for desktop users. Compatible with all computers. 4 usb3.0 expanding port transfer data Speedly and non-interfering each other. Drive free, Supports pluy and play,hot-swap,easy to use and carry. Adds 4 unpowered USB 3.0 ports to your computer - super speed (5Gbps) transmission, backward compatible with USB 2.0 / 1.1 transfer rate. Support over current and instant current protection, protect the connected devices and ltself. Support: MS windows2000/xp/vista/7/8 Mac OS/ linux. Independent supply provides power supply to connecte devices.