A:Answer Really not enough info for a complete answer. Normally you will have an adapter for each device that you wish to network. Obviously you can move the NightHawk to whichever device you want to use, but to use them concurrently each device needs a wireless adapter. Are these older TV's? Newer ones come with built-in wireless capability. If they don't have wireless, then maybe they don't have USB connectivity as well. I have one router, 3 computers (one streaming TV) and one wireless adapter per computer, as well as a smart TV with an internal wireless connection to the same router, along with a wireless printer and two smartphones. I hope this answered what you were asking.