The Kensington MemorySaver prevents unauthorized access to the valuable internal components of the CPU and is compatible with most Dell Optiplex and Dimensions, Toshiba Equim, Apple iMac and G4, HP EPC and Vecrta, Compaq iPaq. The Slim lock barrel fits your computer without interfering with any ports. It also makes the product more difficult for criminals to pick and the anti-drill cone prevents potential thieves from drilling out the lock. A rubber bumper on the locking surface will protect your CPU's surface. It is also suitable for Docking Stations.