When I first saw this design, I thought the brackets needed to be secured to the Mac Pro body somehow. A few emails back and forth with the MacLocks folks and I am convinced. The only way someone will walk off with your Mac Pro is if they cut the security cable. And even then, it will be difficult for a thief to ever get the lid off so they can use it. Granted, this will not stop a determined thief, but for a public area, this is better than no security.

As you can see by the video below, the brackets slide into place behind the cover. Next, the power cable is plugged into the Mac Pro, the brackets slide together to encompass the power cord and the lock locks the whole thing in place. Nice.