Maclocks MBALDGZ01KL Ledge Security Laptop Lock Slot Adapter with Keyed Lock for MacBook Air (Silver) Smallest, most revolutionary security cable lock adapter for MacBook Air Constructed of stainless steel Features Key lock; Cable length - 6 feet Ideal security device for your expensive laptops Includes: Security Lock Slot Adapter & Key Lock for MacBook Air Not Compatible with the Non-Touch Bar Models Does not affect any functionality of the MacBook. Integrates seamlessly with MacBooks minimalist appeal