Thunderbolt Ethernet Adapter No Internet

Discussion in 'Mac Accessories' started by cyb3rdud3, Mar 7, 2015.

  1. cyb3rdud3 macrumors 65816

    Jun 22, 2014
    I've had some very strange behaviour when using the Thunderbolt Ethernet adapter on my MacBook Pro Retina.

    When I plug in the cable that goes to the back of a Thompson Speedtouch ADSL router, I get assigned an IP address, DNS, default gateway. All is fine, I can browse the local network and can get to the router configuration page.

    However when I want to get to the Internet I can't get passed the router.

    However again, when I plug in my usb 3 to Ethernet adapter, use the same cable, all is absolutely fine.

    Has anyone got any idea what is going on with the thunderbolt - Ethernet connection?
  2. westrock2000 macrumors 6502a

    Oct 18, 2013
    Sorry I don't have an answer, I can only say that I also have the thunderbolt Ethernet and it gives me problems occasionally as well. I just got a monitor that uses thunderbolt and plugging the Ethernet adaptor into the monitor makes the screen cut out and I have to reset the Mini to get the screen to come back on. It has given me network issues in the past as well.

    Good price point, but I have not had confidence in it.
  3. Fishrrman macrumors P6


    Feb 20, 2009
    I know this doesn't specifically answer your question, but... advice is to "use the connector that works".
  4. cyb3rdud3 thread starter macrumors 65816

    Jun 22, 2014
    I guess the thunderbolt connectors will have to go back then.

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3 March 7, 2015