I have a Macbook Air running 10.7.4 and I'm trying to connect to ethernet using the official Apple USB to ethernet adapter. However, the mac never detects the new network interface. It never displays a dialog asking me to set it up. It doesn't show up in network preferences. As far as I can tell, the mac doesn't know it's even plugged in.

I've verified both the adapter and the ethernet cable I'm using work with another mac. I've tried both USB ports on the Air.

Anyone have an idea how I can troubleshoot this? Is there a USB utility that I could check out?

  • 1
    I assume you already did a reboot of the MBA?
    – nohillside
    Jun 26, 2012 at 17:50
  • Yep, rebooting doesn't help.
    – Jason
    Jun 27, 2012 at 0:19

5 Answers 5


I had the same problem and a couple of minutes ago I saw something about the "Android File Transfer Agent" having problems with the device. So uninstalled "iSyncr" software (sync android over Wifi), disconnected the usb device, plugged it again and now it's working fine.


  • 1
    That did it! I had the Android File Transfer utility installed. Removing that fixed the problem.
    – Jason
    Sep 25, 2012 at 20:47
  • cooltrainer.org/taming-android-file-transfer-on-mac-os-x was helpful when removing it for me.
    – robbles
    Apr 23, 2017 at 3:41
  • Great! Thanks! It was exactly the same for me but with the Philips Hue Sync application.
    – swifty
    Nov 22, 2019 at 18:15

I've resolved by simply create a new location in Network Preferences and then try connecting it again by clicking "Apply" on this new location.


Yes - you should see the hardware device in Lion's System Information pane under USB devices if it has any working pins that the computer can see and sense.

From there, it's an OS / driver / kernel issue and the simplest thing to do is often to install a clean OS on an external drive and see if it's somehow a setting or corrupt preference file.

These have been out for so long, it's very unlikely the OS doesn't have the correct driver, so it's more a glitchy or buggy situation as opposed to the very new Thunderbolt to Gigabit Ethernet where most Macs that shipped before this last batch need a thunderbolt firmware update to make the OS see the adapter.

  • I see the adapter under System Information, and I can see it in USB Profiler. Is there alternative to installing the OS on a separate drive? Maybe a driver I can reinstall or something?
    – Jason
    Jun 27, 2012 at 0:22

I have INSIGNIA USB to Ethernet not detected. I installed driver from here: http://www.nikvdp.com/technotes/getting-non-apple-ax88772-usb-ethernet-to-work-on-mavericks/ and it works now.


On my 2017 15" MacBook Pro a simple reboot solved the issue. Always try this first, before trying a crazy solution.

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