But if the host machine is a SE/30, the FPU installed on the card may conflict with the built-in one... I believe those FPU sockets were made for the IIsi, which uses the same PDS connector and doesn't have a built-in FPU. I don't think the ROMs or the OS could take advantage of a dual FPU system -- although the 680x0 architecture does support it.

I think I have a similar card, but without the daughtercard... @duxbridge, could you please post a picture of the daughtercard? Thanks a lot in advance!