MOTU serial MIDI interfaces with Logic, Cubase, Finale and other OMS compatible software on B-W G3s and G4s
https://motu.com/techsupport/technotes/document.2000-04-14.9182637522"To use a MOTU MIDI interface with OMS, you need to install FreeMIDI after OMS is installed. There are components in the FreeMIDI install that need to go into OMS folder of the system folder (the MOTU OMS driver and the MOTU OMS USB driver). With these components present, you should be able to scan for the MOTU MIDI interface in the studio menu/MIDI cards and interfaces selection. Or when running OMS for the first time."