Maclocks MBPRLDGZ01KL Ledge Security Laptop Lock Slot Adapter with Keyed Lock for MacBook Pro (Silver) Worlds smallest, most revolutionary security cable lock adapter for MacBook Pro Compatible with Standard T-Bar Cable Locks Works for both 13" & 15" Models Easy & Quick Installation Includes: Security Lock Slot Adapter & Keyed Lock for MacBook Pro Not Compatible with the Non-Touch Bar Models Does not affect any functionality of the MacBook. Integrates seamlessly with MacBooks minimalist appeal