My mom found a 4 port 5200 at a garage sale near where she lives and sent it to me. I had never actually seen a 5200 before, but I knew it needed an RF adapter (as did all systems of that day) which it didn't come with and I didn't have on hand. So when I went looking for one online I read that there were the 4 port and 2 port versions and that the 4 port used the unusual adapter. Apparently the power plugs into the RF adapter for the 4 port version. But mine's not built that way. On mine the power plugs into the 5200 itself, right next to the channel switch. I figured maybe it was some sort of mod that the previous owner had done, but it was very obviously manufactured that way.
I looked all over for this version but found absolutely no mention of it. Has anyone else seen this?
Anyway, I ended up making a simple RF adapter just to make sure the thing worked (it was fine) and am planning an S-Video mod...eventually.
All is well now. Just curious about the power situation.