Very helpful and just what I needed to know. I have a Radius Two Page Display that ought to run from an SE/30 two page display card (I have three of these here in a box). I want to stack one of them — don't especially care which so long as it works, but the best looking one is a Supermac, and that for the present is the working proposal — on top of the MacCon card, so as to have both ethernet and extended desktop in an SE/30.

Just so I understand correctly, the top connector on the MacCon card is horizontal; Trag has angled ones, or by the look of the pics, ones that connect through the side. THAT would indeed be what I need.