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Thunderbolt ethernet disconnected when USB assessory connected

233 Views 2 Replies Latest reply: Dec 7, 2012 8:34 AM by amosglenn RSS
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Dec 7, 2012 7:47 AM

I've been using an thunderbolt ethernet adapter for a couple of weeks with no problems. Now I'm trying to connect a USB conference phone for skype calls. When I connect the conference phone to my usb port, the ethernet disconnects from the thunderbolt port.


Is there a way to connect a USB item and the thunderbolt-ethernet adapter at the same time?



MacBook Air (13-INCH, MID 2011), Mac OS X (10.7.4)
  • tzbikowski Level 4 Level 4 (1,945 points)

    It is definitely possible to use USB ports while having ThunderBolt to Eth in.

    The problem you may be having is the conference phone which would probably appear as a communication devices in your Networks.

    What you can try is: connect both cables TB and USB
    in System Preferences > Networks

    Set Service Order (cog icon bottom of the window)

    This changes the preferable connection device.


    See if that helps - otherwise this is some kind of conflict with third party conference phone.

    Post back your results.


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