Thunderbolt Ethernet adapter not connecting on MacBook Pro Retina
I recently purchased the Thunderbolt to Ethernet Adapter to connect to my 13in MacBook Pro Retina Late 2012 (Mountain Lion 10.8.2) to a hardwired internet connection for faster downloads. However, when I connect the ethernet cord to the adapter nothing happens and only the wifi connection is identified.
Ethernet or Thunderbolt Ethernet are not an option in the System Preference > Network. Also, either connection are options when trying to add a network interface ( System Preferences > Network > + > Interface).
I have tried several fixes like Resetting PRAM or Removing Network Preferences File. The NetworkInferences.plist and Preferences.plist files did get recreated after reboot, but only the WIFI interface shows up.
http://tearfulwolfstudios.wordpress.com/2012/03/13/reset-network-preferences-osx /
http://rohanradio.com/blog/2012/02/27/fixing-thunderbolt-ethernet-on-the-macbook -pro/
I am sure the Thunderbolt ports are functional since I am able to connect my display using Mini DisplayPort to DVI Adapter
Could I have corrupted the Network Preference File or is could the Thunderbolt to Ethernet Adapter damaged?
Please help.
MacBook Pro with Retina display, OS X Mountain Lion (10.8.2), Thunderbolt Ethernet Adapter