When you’re dealing with computers and electronics in general, everything gets more complicated the more sources and items are involved. There’s a fantastically large difference between 2.0 and 3.0, starting with compatibility. If you’re using a PC that has multiple USB ports, they’re not all the same. You have some 2.0 ports and maybe one or two 3.0 ports, which only work with 3.0 configurations.\r