6-2 IBM Personal Computer User GuideConfiguration/Setup Utility overviewThe Configuration/Setup Utility lets you view and change important informationabout your computer and its hardware. You might need to use Setup if you upgradethe hardware in your computer or if you get an error message while using yourcomputer.In most circumstances, when you add or replace hardware in your system unit, yourcomputer’s Basic Input/Output System (BIOS) detects the hardware changes andupdates Setup parameters automatically. In some cases, however, you might needto manually change the configuration information in Setup. If you add or removehardware, an online message may ask you to check Setup to verify that automaticdetection made the correct configuration changes.You can use the Setup menus to view information about your system’s hardwareconfiguration. In general, the Setup menus contain information on the following:• Processor type and speed• System memory• Diskette, hard disk, and CD-ROM drives• Serial and parallel ports• Plug and Play options• Startup options• Model information• Date and time settings• Security options• Power management optionsNote: For simplification, the Configuration/Setup Utility will bereferred to simply as “Setup” throughout this handbook.