There's also the old Sonnet Tempo Trio cards

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I've seen an awful lot of buggy reports on those things. But then, I was living on the SuperMacs list back then, so it's probably issues with the Umax S900. Still, Sonnet had detailed trouble reports on *exactly* what was causing the problem. They could have bothered to fix it. Grrrr.

Unfortunately, the tech support guy (Neal?) was too ignorant to understand the problem description.