Motu Ultralite MK3

Here is what I found out:

• You can download the Audio Installer Driver here. Works with the MK3 for os12 and 11. https://motu.com/en-us/download/
• Firewire is no longer viable. You must use USB
• If your computer is not recognizing the Driver, use the following steps https://motu.com/techsupport/technotes/apple-silicon-motu-audio-inst

I have not had a chance to try this myself, yet, but will hopefully get around to it in the near future.

I have this same question/issue. Have you tried reaching out to Motu customer service? I have just done so, and will let you know what I find out. I have a bad feeling that they are going to tell me I have to buy an MK5 which will leave me extremely angry.