On the Nes Cleaning Adaptor,it shows a Gameboy on its side connected to the bottom of a Nes,which has a Snes stack on top of the nes and on top of the Snes is a Statue of somebody.
is this possible to Connect or was it just for the picture?

Also there is a Expansion Port on the Bottom of the nes.What was this supposed to be used for? a American Disk System?