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 PinTM 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.