MasterKey Solution. Requires MasterKey (4Z10P40249). The tough 10mm Lock Head with Cleat Locking Technology offers uncompromised security for ultra-thin Laptops, Tablets, Desktops, Monitors and Accessories. Built using a NanoSaver lock slot, the 10mm Lock Head with Cleat Locking Technology provides trusted protection. The 5mm Keying System offers flexible compatibility with all of Lenovo's 5mm keying systems, including MicroSaver® 2.0, so you can leverage the custom keying solutions across your organisation. Supported by proven anti-pick Hidden Pin™ Technology, the NanoSaver delivers protection with flexibility. A carbon steel cable offering the same level of cut-resistance and theft-resistance as thicker cables, the carbon steel cable with plastic sheath offers security and greater mobility with 1.8m (6ft) for a one lock cable lock and 2.4m (8ft) for a twin head cable lock. The Pivoting and Rotating cable gives greater freedom of movement, eliminating awkward angles and allowing you to insert you to insert your key with complete ease.