updating this list of possibilities for adat expansion on interfaces
such as the 2408, or DIGI 001, DIGI 002, etc any interface that features ADAT expansion

http://www.soundonsound.com/sos/jul06/articles/qa0706_4.htm

echo audiofire pre 8 (2010) (also a standalone firewire interface but obviously not mac os 9 compatible due to its lack of age)


http://www.soundonsound.com/sos/apr10/articles/echoaudiofirepre8.htm

art tube opto 8 (2009)


looks similar to http://www.soundonsound.com/sos/aug09/articles/arttubefire8.htm minus the firewire

Onyx 800R

http://www.soundonsound.com/sos/feb05/articles/mackieonyx800r.htm

Behringer ADA8000 (2004)

http://www.soundonsound.com/sos/jun04/articles/behringerada.htm

Presonus Digimax  D8


MOTU 2408 (standalone mode)


MOTU 8 PRE (firewire interface + adat extension unit)


http://www.soundonsound.com/sos/apr07/articles/motu8pre.htm

Presonus Firestation (standalone mode)


Edirol UA1000 (standalone mode)


Alesis aI-1 / alesis ai-2 / alesis ai-3

http://www.pgtonstudio.ch/AI1_Manual.pdf
http://alesis.com/ai1 | http://alesis.com/ai2 | http://alesis.com/ai3 | http://alesis.com/ai4
http://www.soundonsound.com/sos/1994_articles/jul94/alesisal1.html

this is a work in progress please feel free to help me grow this information;)