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If a MIDI device isn’t working in Audio MIDI Setup on Mac
Try any of the following suggestions:
- Make sure the MIDI device is properly connected to your Mac, or to a MIDI interface that’s connected to your Mac. 
- Make sure the device is turned on. 
- Make sure you installed any software provided by the manufacturer. Check the manufacturer’s website to see if you have the latest version of the software. 
- Make sure the app you’re using is compatible with Audio MIDI Setup. For more information, refer to the app’s documentation. 
- In the Audio MIDI Setup app  on your Mac, make sure you set up the MIDI device correctly. on your Mac, make sure you set up the MIDI device correctly.