Abstract: A security method for an attached computer module in a computer system. The security method reads a security identification number in an attached computer module and compares it to a security identification number in a console, which houses the attached computer module. Based upon a relationship between these numbers, a security status is selected. The security status determines the security level of operating the computer system.

Abstract: A method for installing memory into a computer module. The method includes providing a used computer module, which comprises a housing to enclose a hard disk drive, a memory module for random access memory devices and a central processing unit coupled to the hard disk drive and coupled to the random access memory. The method also includes removing a top cover from a base of the housing to expose the hard disk drive and the memory module. Thereafter, the hard disk drive is removed from the base of the housing and a second hard disk drive is inserted onto the base. The top cover is reattached to the base of the housing to complete the installation process.