The Ledge Lock Slot Adapter is a small, revolutionary security cable lock adapter for MacBook Air. With a simple turn of a screw, your MacBook will have a compatible cable lock slot that will work with the security cable locks. The proprietary design does not require any adhesive or alteration to the body of the MacBook and does not affect any functionality of the MacBook. The slim design of this extremely secure lock slot adapter integrates seamlessly with MacBook?s minimalist appeal and is ultra-lightweight at less than 0.1 lb. so it adds minimal bulk and allowing for the MacBook to fit in a sleeve or bag.