Recapped Shuttle AB61 Spacewalker (440BX) and took a quick test that it boots and things seem fine in general. I found out from Shuttle archives that last BIOS update brought official Coppermine support for this board, something that theretroweb page for this board doesn't mention. So I had to naturally test it out with slotket and s370 700MHz Coppermine and sure enough, no problems. Overall it seems like a pretty neat little board.