Kensington MicroSaver Retractable Keyed Laptop Lock (K64538US) Hidden Pin technology ensures tubular locks cannot be picked offering the highest level of security Tamper Evident technology alerts you that someone has tried to steal your device Built-in defense system guards against lock tampering Safe rated to meet industry standards for greater security and peace of mind NOTE: Not compatible with several 2016 Dell laptops and tablets including some Inspiron, Latitude, Venue, XPS, and Chromebook 13 models that use the Noble lock slot. Please review your devices technical specifications. Compact design travels easily Built-in lock defense system guards against tampering 4-foot retractable steel cable with tempered steel security loop Patented T-bar lock works with 99% of notebook computers SAFE tested for greater security and peace of mind