Kensington Chassis Lock for Computer Cabinet - K64603WW (Silver) Secures the computer cabinet to prevent theft of components, including CPU, graphics card and hard drive Single keyed access with free Register & Retrieve on-line key code registration for secure key replacement. Attaches to desktop computer via the built-in Kensington Security Slot Tamper-evident feature goes into lockdown mode and displays a red dot if tampered with Patented T-bar locking mechanism provides superior strength and theft protection