This has been gone over in the past I think. Yes with ac powered its going to ask you for a code to activate it. Thats why Mr. Wayne Harris has set up a owner transfer program. I know I got a code when a got mine. Friends too. With their usb powered ones. Mabyes your's is a oddball one were you dont need it.
To the best of my knowledge and going off what was said this one will not need a code of any sort. The old ones never required them. There for who ever buys it is all set and ready to go.