Fully compliant with the Universal Serial Bus, Single chip integrated USB hub controller with embedded proprietary processor, Support four bus-powered USB hub controller, Support four bus-powered downstream ports, built-in 3.3 voltage regulator allows single +5V operating voltage, result in reduced overall system cost, Provide up to 500mA currency to each port which is sufficient for diverse devices, Hot Plug & Play, 4 port high speed USB HUB, Cable length: 20.5inches / 52cm, Color: Black/ white,Compatible with: USB - 1 and USB - 2, Support data transfer rate up to 480 Mbps, All systems are suitable