Dell™ OptiPlex™ GX150 System User's GuideModels DHS, DHP, and DHMNotes, Notices, and CautionsNotes, notices, and cautions are used as follows:Information in this document is subject to change without notice.© 2000–2002 Dell Computer Corporation. All rights reserved.Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.Trademarks used in this text: Dell, OptiPlex, OptiFrame, Dell OpenManage, Dimension, Latitude, and Inspiron are trademarks of Dell Computer Corporation; Microsoft,Windows, Windows NT, and MS-DOS are registered trademarks of Microsoft Corporation; 3Com is a registered trademark of 3Com Corporation; Intel and Pentium areregistered trademarks, and Celeron is a trademark of Intel Corporation; Novell and NetWare are registered trademarks of Novell, Inc; IBM and OS/2 are registered trademarksof International Business Machines Corporation. As an ENERGY STAR partner, Dell has determined that certain configurations of this product meet the ENERGY STARguidelines for energy efficiency.Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell disclaims any proprietaryinterest in trademarks and trade names other than its own.Reader SurveyWe want to hear from you.Please take our documentsurvey.Safety InformationOverviewWhen Using Your ComputerErgonomic Computing HabitsWhen Working With Your ComputerElectrostatic DischargeAbout Your ComputerFront ViewBack ViewInside Your ComputerAdvanced FeaturesManageabilitySecurityPassword ProtectionSystem SettingsAdditional System Setup OptionsJumper SettingsSoftware Installation and ConfigurationInstalling UpgradesComputer CoverExpansion CardsSystem MemoryAGP Graphics Card/GPA CardMicroprocessorHard DrivesDiskette DrivesOptical DrivesBatteryTechnical SpecificationsSolving ProblemsFinding SolutionsDell DiagnosticsMessages and CodesSoftware ProblemsBIOS Recovery UtilityGetting HelpHelp OverviewContacting DellAdditional InformationRegulatory NoticesENERGY STAR® ComplianceLimited Warranty and Return PolicyMicrosoft® Windows® XP FeaturesNOTE: You can obtain the latest version of this document from the Dell | Support website at support.dell.com.NOTE: A NOTE indicates important information that helps you make better use of your computer.NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death.