The kensington microsaver keyed ultra notebook lock is the world39s best selling lock for laptops and computer devices with an added ultra thick 8mm high carbon steel cable for even greater security and peace of mind deter thieves from stealing your laptop and the personal information on it patented t bar locking mechanism and super strong carbon tempered steel cable provide maximum protection that attaches to the standard kensington security slot found in 99 of laptops secure protect and lock