6.2 Foot Universal Security Cable. Made of extremely strong and durable steel cable. Easy to install and theft deterrent. | Cable comes with 2 lock keys as an alternative spare. Available for most notebooks,laptops,desktops with built in standard security locking slot hole.If your notebook has a security slot size of 0.28" * 0.12", you can use this product. | Note:The following model can't be used. [Dell] May not work with 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. | You need to buy another kind of Security Lock with a glue-on locking mount if you have this above-mentioned devices. | All Security Locks come with a 18 months warranty against manufacturing defect.