The Ledge Lock Slot Adapter is the world&#39;s smallest most revolutionary security cable lock adapter. With a simple turn of a screw your MacBook will have a compatible cable lock slot that will work with our security cable locks. The proprietary design does not require any adhesive or alteration to the body of the MacBook Pro and does not affect any functionality of the MacBook. The slim design of this extremely secure lock slot adapter integrates seamlessly with MacBooks minimalist appeal and is ultra-lightweight at less than 0.1lb so it adds minimal bulk and allowing for the MacBook to fit in a sleeve or bag. It can be mounted on the left or right of the trackpad.N/AN/AIt is compatible with all of our T-Bar cable locks and most other Kensington style cable locks.N/AN/ACompatible with MacBook models:N/AA2338 / A2289 / A2159 / A1708