USB 2.0 High Speed 4 port Hub allows you to connect multiple USB devices to a single USB port.Add 4 USB 2.0 Hi-Speed ports Fully Compliant with USB 2.0 Specification Supports up to 127 Hi-Speed devices Backwards Compliant with USB 1.1 Supports data transfer rate at 1.5/12/480 Mbps LED light design Plug & play, no additional drivers required Additional DC-jack is optional for power-hungry devices