ZENBRE USB 3.0 Hub, Portable Aluminum Comma 4-port USB Data Hub, Support Smartphone (Silver) Aluminum sleek housing, Compact easy-go size for portability, ideal design to make sure each port could work independently, 4 USB port totally Saves on syncing time with data transfer rates of up to 480bps. Compatible with USB 2.0 and 1.1 specifications or more lower Built-in surge protection keeps your devices and data safe and supports hot swapping, effectively protect the connected equipment and HUB itself Driver free for Windows (32/64 bit) 8.1 / 8 / 7 / Vista / XP, Mac OS X 10.6 to 10.9, easy to use with a LED indicate light CE and FCC approval, 12-month hassle-free warranty