They had another which had a sliding front to reveal the Mega Drive slot. I think it was light grey.

It’s Retro Man Cave! I had no idea he had a new name, no wonder I have not seen him in such a long time!

Was not expecting everything on one board like that. It probably would have been easier to just package a PC and Megadrive more or less separate with a switch between them. Sega really put some work into that.