The IBM ThinkPad 755CD Security Chip w/Password Recovery Service allows for resetting of IBM ThinkPad 755CD BIOS passwords. The package includes instructions. This package includes the replacement chip and the password recovery service to recover the password from the existing chip that may be necessary to unlock the hard disk. Old chips must be returned to Password Crackers, Inc. for password recovery service. This product and service is not manufactured or authorized by IBM.