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Firewire Audio Drivers/Consoles OS9
This install contains MAS and Firewire Drivers/Consoles for the 828, 896, 828mk2 and 896HD for OS9.
Unstuff with Expander version 7.03 or higher. Double-click installer and choose the installer option for your MOTU Firewire audio hardware.
-- http://www.motu.com/download/download_matching_downloads.html?product_id=21
pretty safe to say those are the interfaces compatible with mac os 9 and the others are not..
motu 828 (original 1999)

motu 828mk2 (2003)

motu 896 (original 2001)

motu 896HD (2003)

http://cdn-data.motu.com/manuals/firewire-usb-audio/896HD_Manual_Mac.pdf
896HD?
? hmmm!!!!