I don't know the definitive answer, but logically, you would need a hub. Once you splice, there is no way for the computer to define individual devices, is there? With a hub, the computer has to see the hub first, and THEN decide the other components. Plus, there are some really cheap 4 port, 2.0 hubs out there. Just go that route and be safe. I think the splicing plan could cause some serious problems.