I know this topic is nearly 6 months old, but if you are still selling the Adam power supplies, I would like to get one, as my old power supply that I removed from my printer just stopped working. I can send you the money immediately.
The Beige one is an Adam minus the tape drive, printer & keyboard with a power supply that will only power the Colecovision game portion. It also comes with a audio video cable for better picture quality. It can be upgraded to a full working Adam computer.
The black one is the Colecovision that was released in 1982.