**Don’t use this adapter on any Mac except the MacBook Air**
At least not yet. Here’s why. The Apple USB Ethernet adapter loads just fine but it identifies itself with a **BSD Device Name of en0**. The problem with this is that your Mac’s built-in ethernet adapter also is identified as en0.
I bought this to be an extra ethernet adapter to use with a Mac mini I’m using as a server. What’s happened is my built-in ethernet is now non-functional. It seems to reset for about a minute then ceases to work. I think what’s happened is my Mac mini now only wants to see en0 as the USB Ethernet adapter and no longer associates en0 with my built-in ethernet. No amount of restarting seems to fix this.
I need to call AppleCare. Hopefully they can fix it and still figure out how to make the Apple USB Ethernet adapter assign a non-utilized BSD Device Name when it’s added in the Network Pref pane.