Wasn't there someone lately who sells the whole lot of carts with one isa for 50 GBP or so and didn't sell them ?
Same guy, he pulled it to part it out. A lot of people are going to have unusable parts. The 32X cart needs that isa card to work, and it was sold in a separate auction.
That looks very much like the N64 interface card. The software works just fine with a plain Adaptec PCI scsi card. There's a chance the SNES stuff works similarly.