Chapter 1. Installing optionsThis chapter provides an introduction to the features and options that are availablefor your computer. You can expand the capabilities of your computer by addingmemory or adapters. When installing an option, use these instructions along withthe instructions that come with the option.ImportantBefore you install or remove any option, read “Important safety information”on page v. These precautions and guidelines will help you work safely.FeaturesThis section provides an overview of the computer features and preinstalledsoftware.System informationThe following information covers a variety of models. For information foryour specific model, use the IBM Setup Utility. See Chapter 2, “Using the IBMSetup Utility program,” on page 25.Microprocessor (varies by model type)v Intel ® Pentium ® 4 processor with HyperThreading Technologyv Intel Pentium 4 processorv Intel Celeron ® processorv Internal cache (size varies by model type)Memoryv Support for two double data rate (DDR) dual inline memory modules (DIMMs)v 512 KB flash memory for system programsInternal drivesv Internal hard disk drivev Optical drive (some models)© Copyright IBM Corp. 2004 1