*?Note?The following models need to be used with anchor plates. [Dell] 2016 and newer Dell laptops.XPS13/ SPX13/ 7000/ M3800/ Alienware/ Insprion 7000,7779,other Inspiron,Latitude,Venue,XPS with square keyhole.[HP] Chromebook 13.[Acer] Chromebook R13 /Aspire V Nitro /E571.[Apple] New Apple Macbook can't use it. Only old macbook Pro With DVD Drive can be used.[Lenovo] U41 / U31 / M41 / S41 / K41 / Ideapad / Flex3 / rescuer r720. *?6 Months Warranty? just handle with 1 month after-sale service during rules,so pls contact seller instead of if there is any problem with our lock during 2-6 months warranty. Our after-sale department will provide solution timely. * [Widely compatible] The laptop with key lock can be used for 90% of laptops. For projectors, monitors, ipads, computers, macbooks, dell, hp, lenovo, TVs, and other hardware without 3 * 7mm security keyholes, you need to use them with an adhesive board. *?3 pcs lock keys?Universal laptop lock offers three alternative lock keys ,it is extra long to meet your daily demands.Main cable length 2m/6.7ft, secondary cable length 6 inch. *?Strong Steel Wire Rope? Is made of 7 * 19 strands of steel wire, made of hardened steel wire instead of iron wire. The diameter of the steel core is 3.0mm, and the diameter after encapsulation is 5.0mm. The cable has anti-cutting capability. The steel cable joint can withstand a pulling force of up to 1800N, while the steel cable ring can withstand a pulling force of 1200N without breaking. *[Double Lock Design] Two devices with 3*7mm security keyhole can be connected at the same time. Both locks are opened by the same key for easy management.Each lock head pivots 180 degree to ensure easy access to lock.