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When deciding between the isolated models and the non-isolated models, you should be aware that isolation technology available on the market today is limited to 12 Mbps. USB 2.0 devices operate at one of three speeds. Low speed devices, such as a keyboard or mouse, operate at 1.5 Mbps. This is called "low speed. " Other devices, such as scanners or printers may operate at 12 Mbps. This is called "full speed. " Devices such as USB video cameras may require 480 Mbps. This is called "high speed" USB. The USB hubs support 2.0 - however, the isolated hubs do not support "High Speed" 480 Mbps and will ratchet back to 12 Mbps.