For a router I use an Airport Express. It is enough for my iMac and my iPad, but it does not provide an internet connection with my Direct TV HR24/200 receiver. The installer had no luck, and I've been on the phone with Apple and DirecTv people about eight times. They all are willing to spend time trying to help, but no solution has developed. I am not knowledgeable about this sort of problem (or many others.) I have had maybe six Macs since 1984. I use a computer for bookkeeping, writing, keeping up with events, etc., but I have not attempted to understand computer workings, and I am not up on the jargon and abbreviations that I see in the forum discussions. I'd appreciate any help offered, but it has to be clearly stated for this old man to understand.