Use a data cable
Some USB cables charge your tablet but cannot connect it to your Mac. This is a check to try, not a confirmed cable fault.
Try these in order
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Try a cable that carries data
Use a cable marked for data transfer. A tablet can charge even when its data connection does not work.
-
Connect directly to your Mac
Try another Mac port. Remove the hub or adapter for this check.
-
Check the tablet’s settings
Turn on USB debugging, unlock the tablet, and look for the Allow prompt.
Still stuck?
Email [email protected] and describe what you see.
Include your tablet model and the message in SuperMirror. The Logs button in the Mac menu copies a report you can paste.SuperMirror for Mac · All connection checks