So just upgraded a 21.5” 2017 Machine, and got the same problem. Interestingly the built-in mic seems to be an issue as well. And no it’s not because I covered the mic with adhesive. It’s just not registering anything.[br]
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System report shows TB4 available, but no TB connections will show up.[br]
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An HD TV plugged in via USB-C (in the TB ports) is working, but only in one of the Ports.[br]
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Any idea’s?