The illustrated computer 20 also includes a hard disk drive interface 54 for connecting a Compact Disk (CD) drive 34, a magnetic disk driver interface 56 for connecting a magnetic disk drive 38, an optical drive interface 60 for connecting a Digital Versatile Disk (DVD) 42, and a user input interface 64 for connecting peripheral devices such as a keyboard 60, a mouse 62, a microphone 70, speakers