Though I do wonder, is there a clear case of prior art for this kind of thing that would invalidate any possible patents? Something technically designed as a fully functioning computer that plugs into the thing that gives it all its interfaces? If there is, it would probably be good to know about it. The last thing we would want is a patent troll coming along demanding royalties for some obscure patent. :)
AFAIK the recommendation in this matter is: better not know, since knowingly infringing is a more serious offense and unknowingly infringing.
Stefan