Apple USB ethernet adapter is not detected 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?
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.

https://discussions.apple.com/thread/3941878?start=0&amp;tstart=0