ALSA SoundCard Matrix
Even if we have vendor supplied driver documents they may refuse to provide all the necessary information to support devices fully.
If you are looking for a particular capability, go Matrix:Soundcard-Tags here and choose the tag you are interested in. Then select 'What links here' from the sidebar to get a list of vendors whose products have that feature. For instance this shows the result for the USB tag: Special:Whatlinkshere/Matrix:Tag-USB
Note, this lists existing module information pages. See also Special:Wantedpages for Module-* pages that have not yet been created.