The two lock heads are designed for laptops and other devices, while using the same key so you can quickly secure a laptop as well as a monitor, docking station or hard drive. The primary lock head has expanding side 'hooks' that grab on to the internal sides of the non-standard lock slot, creating a strong connection between the device frame and the lock to resist and deter theft attempts. The secondary lock head uses the trusted industry standard that's compatible with the Kensington Security Slot found on many peripheral desktop accessories. The rotating bar securely attaches to the internal wall of the device for a premium level of security. A central pillar of Kensington's industry-leading locking solutions, the exclusive keying system is common across all of Kensington's latest locks. Our unparalleled custom management options provide flexibility, and our patented anti-pick Hidden Pin Technology offer complete peace of mind. Now IT directors will only have one keying system to manage across their organization. Offering the same level of cut-resistance and theft-resistance as thicker cables, the carbon steel cable with plastic sheath offers security and greater mobility with 6 feet of cable. Special hinge creates great freedom of movement, eliminating awkward angles and allowing you to insert your key with complete ease. Engineered to Kensington's rigorous specifications and third-party standards in torque/pull, foreign implements, lock lifecycle, corrosion, key strength and other environmental conditions.