I have two Thunderbolt Displays plugged into my laptop, and as a consequence, two additional audio devices become available. I find that even when I configure one display as the default output and input device, the actual behavior I get is usually unpredictable and rarely reflects the configuration I set.

I will never use the mic or audio on one of the displays. Can I somehow delete the device or otherwise deactivate it from OS X? Some sort of equivalent effect to what you get in Windows when you go to Device Manager, right-click the device, and selecting "Disable" (or whatever the text is, going from memory here)? Maybe a plist I can edit somewhere?

  • did you found the solution so far? – Kuncevic Jul 15 '18 at 0:16

I've done this before but my mac isn't in front of me right now to double check. In the utilities folder is an application Audio MIDI Setup. There I believe you can disable audio devices.

  • Ah, I forgot about that utility. I've used that to make some audio configuration changes before, taking a look now... – Wilco Mar 8 '16 at 20:06
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    So it does indeed list all available audio devices, and I do see the standard + and - buttons below the list for adding/removing items. However, when I select a device (any device listed, in my case) the - button is greyed out. – Wilco Mar 8 '16 at 20:08

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