Mine is in an A500, and the whole arrangement has a keyboard laying right on top of it.
Hope this helps.
Yes, this helps a lot.
My derringer is the 50mhz version. and is sitting in an A500+

I have some problems now with space inside the case. as i have a indivision installed. the two boards collide and argues about some space.
I am looking for ideas to solve the problem. (if anyone got any good ideas I'm listening) And i am on the look for any cpu slot ide controller capable of handling a (or two) CF card(s) for HDDrives.