OK, thanks. I also found the explanation thread which cleared up a lot. In my case we're all Gb speed now through a 24port Gb switch. DECA would be slower and not have as good a capacity for the load. That AND at this point I am actually trying to bring all my media and devices together, not fragment them further apart. I see no advantage in DECA for our install. With the forthcoming IPV6 and the established base, I hope D realizes Ethernet isn't going anywhere for a while and not punish those that choose to use it.