I have a Supra-something RAM board that connects to the side of the A500 at home. Not sure what its name is, but it does add 2 or 4 MB of ram to the A500 (again, not sure). I know it is a "bit" wobbly, since I had to use ducktape to glue it more firmly to the A500. Is that anything interesting for you Toni ? I am almost 100% sure it is RAM only, no accelerator, no hd stuff...
edit: I think it might be this thing:
http://www.bboah.com/index.php?actio...189&artlang=en