dodocool Superspeed USB 3.0 4-Port HUB High-strength ABS Adopts high-strength ABS material， compact and stylish， lightweight and solid.Superspeed USB3.0 Complys to USB3.0 specificationand 5Gbps theoretical transmission speed. Downwards compatible with USB2.0 and USB1.1.High-performance Chip Uses VL812 high performancechipset， more stable and secure.Plug & Play Plug & Play， support Hot-swap， no driver needed. Support Windows 2000/XP/Vista/7; Mac 9.1/10.2 above.Safe & Reliable Unique over-voltage protection and current overload protection effectively protect HUB and connected devices.Light & Portable Size: Approx. 10.7 * 3.3 * 2.4cm/ 4.21 * 1.3 * 0.94inNet weight: Approx. 66g / 2.34ozPackage includes 1 * 4-Port HUB1 * User manual