You would probably just have to unplug your drive, turn it around, and then plug the drive back in. Here's a vid with the storm trooper: http://www.youtube.com/watch?v=NGq5GZ4ShKA
They only turned the upper one around though. When i tried to turn the bottom one around the thumbscrew wouldn't go in because there was no whole to put it in. Do I have to drill an hole for it or will the cages be safe with only one thumbscrew?