It appears Apple realizes that putting $3,000+ of supercomputer into a cylinder that can easily be lifted with one hand may pose some problems, if the wrong people are around. For the first time we can recall, it’s introduced a physical security accessory, the Mac Pro Security Lock Adapter ($49).
The adapter doesn’t actually come with the lock and cable.
Rather, it’s just a metal piece that clamps onto the computer’s outer shell, just below the power cord. When attached, it not only gives you a way to keep the Mac Pro in place, but it also ensures no one can open the computer up to nab the hardware inside.