Connector Type: USB2.0 Port Number: 4 Transmission Rate: 480Mbps Supports System: Windows 2000 / XP / Vista / 7 With magnetic ring, meets the standard of USB 2.0; Compatible with USB 1.1; Data transmission rate up to 480Mbps; Supports hot plugging, plug and play; With USB 2.0 4-port hub function; Double shielded wire, transmission is more stable; With a DC power supply interface, easy to use power equipment; With a power indicator light, extension cord with a ring, and better protection of your related equipment.