The ultimate laptop anti-theft solution ^^ Works with Macbooks, Surface, Dell, Lenovo and all other major laptop brands that do not have a Kensington's built-in security slot ^^ Simply plug the Anchor Adapter into the audio / headphone port. Then attach the included 4 digit combinaton lock to protect your device. ^^ Includes 1.7 metre 4-digit combination cable lock made from steel ^^ Includes Fix Point to provide an anchor point for the security cable ^^ Patented design, install in seconds. Easy uninstall ^^ Small lightweight design, fits inside laptop sleeves ^^ Perfect for securing laptops in the office, school, university, cafes, library and much more