Both of my Sil3512 cards are usable in my Digital Audio(even at the same time) but they were not in a QS2002 I had for a bit(never had a QS2001 nor any other DAs).. So I do not really know what to make of the situation; people say that the Digital Audio is affected even though mine works. I do not know how to determine compatibility aside from just trying it. If you are lucky your DA/QS will work and if you are not it will not. :/

If would be nice if someone had the tools and brains to figure this one out good and proper.