How about a IIvx adapter? I have one of those, I can probe that unit. It's probably electrically equivalent. I have tried it on my SE/30 once or twice to run a Turbo 040 or PowerCache. It worked fine, but it was difficult to hook-up since I had to make a temporary power connection on the back side of the motherboard with wires and a Molex connector. I think Trag also has one that he was doing similar experiments with.