Dual Lockheads with 5mm Keying Lock two devices with a single solution. Secondary T-bar lockhead fits industry-standard Kensington Security Slot. Plastic sheathing protects surfaces. 5mm keying system is common across all of Kensington’s latest keyed locks, so there’s only one keying system to manage. Slim Profile Made especially for ultra-thin & 2-in-1 laptops. Tested & approved by Dell. Does Not Block Valuable Ports Allows for full use of laptop’s ports Allows Laptop to Lie Flat & Stable Won’t raise the laptop off its surface & cause it to wobble.