I've connected my new MacBook Pro to my Apple Thunderbolt display using the Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter. The display and USB are working as expected but I'm not getting any ethernet. Ethernet is working fine with my old Thunderbolt 2 MacBook Pro. Has anyone been able to get this working?

2 Answers 2


It looks like this other post provided the hint that I needed to get this working! MacBook Sierra display ethernet needs constant re-starting

Unplugging the display and then plugging it back in fixed the problem! What a pain!

  • That doesn't work for me. I get the external display and USB devices plugged into the monitor are recognized, but no ethernet at all. Was there anything else you had to do to make things work?
    – Dominique
    Jan 15, 2019 at 0:23

According to this the trick is:

To get the ethernet on the display working, I had to disconnect the USB-C adapter, delete (AFAIR) the Thunderbolt Bridge from the network preferences, and then reconnect the adapter.

This worked for me too, I now have Display Ethernet in the network interfaces list.

  • Thanks for this great tip, which also solved my issues! Actually I deleted more 'unused' connections from the Network-Preferences. Note that a restart was needed in order to have the desired effect!
    – iOS-Coder
    Oct 29, 2021 at 14:42

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