Finally got 'round to installing the drivers etc. for the portable, USB powered US-122 Audio/MIDI interface.
After a bit of head scratching, I got both main channels to work: real instruments (guitar) and MIDI keyboard (I discovered that my 15 year old Yamaha Clavinova had a MIDI out...).
Only reporting this because (i) I think it is the only cheap-ish USB interface with both mutli-line and MIDI on the same box and (ii) it is not in the Apple approved list. So now you know. it works
After a bit of head scratching, I got both main channels to work: real instruments (guitar) and MIDI keyboard (I discovered that my 15 year old Yamaha Clavinova had a MIDI out...).
Only reporting this because (i) I think it is the only cheap-ish USB interface with both mutli-line and MIDI on the same box and (ii) it is not in the Apple approved list. So now you know. it works