The Kensington Microsaver Keyed Ultra Notebook Lock is the world's best selling lock for laptops & computer devices with an added ultra-thick 8mm high-carbon steel cable for even greater security & peace of mind. Deter thieves from stealing your laptop & the personal information on it. Patented T-bar locking mechanism & super-strong carbon tempered steel cable provide maximum protection that attaches to the standard Kensington security slot found in 99% of laptops. Secure, protect & lock down your computer & leave it safe. Features The industrial standard for laptop security, approved by all major laptop manufacturers Patented T-bar lock head with anti rotation pins & anti tamper feature High security barrel & round key lock with anti-rotation pins & tamper evident feature Multi-stranded 1800mm long, 8mm thick high-carbon aircraft-grade steel cable with carbon tempered steel core Built-in defense system guards against lock tampering Two keys supplied