Recommendation: Before buying a used Mackie USB interface for your M-series Mac, check the driver status on Mackie’s “Legacy” support page.
Here are some frequently asked questions about the Mackie USB driver download for Mac: Mackie Usb Driver Download Mac
– Type “Onyx Blackbird” or “Mackie Big Knob Studio+” etc. Recommendation: Before buying a used Mackie USB interface
You need to install the to ensure the hardware is running the latest software. Mackie Usb Driver Download Mac