6.2 Feet Universal Security Cable. Made of extremely strong and durable steel cable. Easy to install and theft deterrent. Keyless 4 dial combination lock offers 10,000 different combination codes. Available for most notebooks,laptops, desktops, projectors, LCD and Plasma Screens 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] XPS13 / SPX13 / 7000 / M3800 / Alienware / Insprion 7000,7779,15-7548,11-3148,11-3157,other Inspiron Latitude, Venue, XPS with square keyhole. [Lenovo] U41 / U31 / M41 / S41 / K41 / Ideapad / Flex3 / rescuer r720. [Acer] Aspire V Nitro / Chromebook R13 / E571. [Apple] New Apple Macbook can't use it. Only old macbook Pro With DVD Drive can be used.