[LAU] Linux Compatible Audio Interface with ADAT?

I posted this question at the 64Studio forum, but didn't really get a direct answer so I figured I try the list. I am looking for a way to get ADAT IO to my computer. I would like to use one of the many eight-channel mic-preamp units that output ADAT, and the only cards I can find that support ADAT IO and linux are RME's Hammerfall line. However, I would rather not be tied to PCI cards, and the Hammerfalls' IO is really overkill for my needs (I'm only looking for eight channels; a single ADAT connection is all I want). Are there any other Linux compatible cards (preferably USB or FIrewire) that support ADAT IO? Thanks, Zachary A. Klein www.silver-chalice.com