Thanks for the links.
On further reading there and some separate investigation, it looks like my SE/30 ethernet cards are one and all too short physically to do what I wanted -- which is why the Japanese fellow is able to sell his adapter cards for the SE/30, allowing the user to do just what I wanted. Making the MacCon ethernet card so short was, in retrospect, a rather poor move on Asante's part, though I suppose as it was made for the IIsi also, it made a kind of sense at the time....
I don't think, alas, that I'll be buying the Japanese adapter any time soon. It's an expensive toy!
On further reading there and some separate investigation, it looks like my SE/30 ethernet cards are one and all too short physically to do what I wanted -- which is why the Japanese fellow is able to sell his adapter cards for the SE/30, allowing the user to do just what I wanted. Making the MacCon ethernet card so short was, in retrospect, a rather poor move on Asante's part, though I suppose as it was made for the IIsi also, it made a kind of sense at the time....
I don't think, alas, that I'll be buying the Japanese adapter any time soon. It's an expensive toy!