Dell D420 specifications Back to Contents

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memory module/WLAN Mini-Card cover — Covers the compartment that contains one memory module and the WLAN Mini-Card. For additional information, see Adding and Replacing Parts.

battery-bay latch release — Releases the battery. See Using a Battery for instructions.

battery charge gauge — Provides information on the battery charge. For more information, see Using a Battery.

battery — When a battery is installed, you can use the computer without connecting the computer to an electrical outlet. For more information, see Using a Battery.

docking device slot — Lets you attach your computer to a docking device. See the documentation that came with your docking device for additional information.

NOTICE: Your computer features Dell Undock & Go™ technology that allows you to undock your computer without going into standby mode. Because the computer may not automatically go into standby mode when it is undocked, be sure the settings in the Power Options control panel do not prohibit the computer from going into standby mode. If you change the Power Options control panel to prohibit the computer from going into standby mode, you greatly increase the chances of causing your battery to wear down quickly or causing your computer to overheat.

air vent — The computer uses an internal fan to create airflow through the vents, which prevents the computer from overheating.

NOTE: The computer turns on the fan when the computer gets hot. Fan noise is normal and does not indicate a problem with the fan or the computer.

CAUTION: Do not block, push objects into, or allow dust to accumulate in the air vents. Do not store your computer in a low-airflow environment, such as a closed briefcase, while it is running. Restricting the airflow can damage the computer or cause a fire.

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Contents Abbreviations and Acronyms Dell Latitude D420 Users GuideFront View About Your ComputerDevice status lights Keyboard and network status lights Fingerprint reader optional Left View Audio connectors Right View Video connector USB connectorsModem connector RJ-11 Network connector RJ-45Bottom View Back to Contents Appendix Cleaning Your ComputerFCC Notice U.S. Only Macrovision Product NoticeFCC Class B Dell QuickSet Battery Meter Using a BatteryBattery Performance Checking the Battery ChargeStandby Mode Conserving Battery PowerPower Management Modes Low-Battery WarningHibernate Mode Configuring Power Management SettingsCharging the Battery Replacing the BatteryStoring a Battery Card Blanks Using CardsInstalling a PC Card or 34-mm ExpressCard Card TypesInstalling a PC Card Installing a Smart Card or Secure Digital SD CardInstalling a 34-mm Express Card Removing a PC Card, 34-mm Express Card, or Blank Back to Contents Setting Display Resolution and Refresh Rate Using the DisplayAdjusting Brightness Switching the Video ImageSwapping Primary and Secondary Displays What Are You Looking For? Find It Here Finding InformationSelect Drivers & Downloads and click Go Service Tag and Microsoft Windows LicenseGuides Dell Support Website support.dell.comOperating System CD Glossary Docking device See APR Device driver See driverPage Page NIC See network adapter Page System tray See notification area Video resolution See resolutionBack to Contents Ftp.dell.com Online ServicesGetting Help Obtaining AssistanceSupport Service Problems With Your OrderAutoTech Service Automated Order-Status ServiceAntigua and Barbuda Diagnostics ChecklistBefore You Call Contacting DellWebsite support.euro.dell.com ArubaAustralia Sydney 0011Czech Republic Prague China XiamenColombia Costa RicaGreece France Paris MontpellierCorporate Germany LangenWebsite support.jp.dell.com GeneralItaly Milan JamaicaMontserrat MacaoWebsite support.ap.dell.com Malaysia Penang MexicoSt. Vincent Puerto RicoSt. Kitts and Nevis St. LuciaTrinidad/Tobago Website support.ap.dell.com Taiwan002 Website support.ap.dell.com ThailandVenezuela Virgin IslandsNumeric Keypad Using the Keyboard and Touch PadKey Combinations Speaker Functions Power ManagementTouch Pad Fingerprint Reader optionalCustomizing the Touch Pad and Track Stick Changing the Track-Stick CapMouse Properties window Page Wireless Local Area Network Wlan Setting Up a NetworkPhysically Connecting to a Network or Broadband Modem Network Setup WizardSetting Up a New Wlan Checking Your Wireless Network CardWhat You Need to Establish a Wlan Connection Determining the Wireless Network Device Manager Connecting to a Wireless Local Area NetworkUnder Pick a Help topic, click Dell User and System Guides Mobile Broadband or Wireless Wide Area Network WwanEnabling/Disabling the Wireless Network Card Connecting to a Mobile Broadband NetworkInternet Connection Firewall Dell Wi-Fi Catcher Network LocatorTurning Off Your Computer Adding and Replacing PartsBefore You Begin Recommended ToolsHard Drive Removing the Hard Drive Dismantling the Hard Drive Hinge Cover Replacing the Hard DriveMemory KeyboardPage Mini-Cards Wireless Local Area Network Wlan CardsMobile Broadband Wwan Cards Page Subscriber Identity Module SIM Card Coin-Cell Battery Internal Card With Bluetooth Wireless TechnologyBack to Contents Dell QuickSet Security Cable Lock Using Smart CardsPasswords Securing Your ComputerTrusted Platform Module TPM Using a Primary/System PasswordUsing an Administrator Password Using a Hard Drive PasswordActivating the Security Management Software Enabling the TPM FeatureUsing the Security Management Software Security Management SoftwareIf Your Computer Is Lost or Stolen Computer Tracking SoftwareCommonly Used Settings System Setup ProgramViewing the System Setup Screens System Setup ScreensLocate Fast IR under Onboard Devices Performing a One-Time BootChanging COM Ports Enabling the Infrared SensorPage Drivers Reinstalling SoftwareWhat Is a Driver? Reinstalling Drivers and UtilitiesClick Start→ Help and Support Using the Drivers and Utilities CDManually Reinstalling Drivers Software and Hardware IncompatibilitiesRestoring Your Operating System Using Microsoft Windows XP System RestoreCreating a Restore Point Undoing the Last System RestoreBefore You Begin Using the Operating System CDEnabling System Restore Reinstalling Windows XPSpecifications Display CommunicationsVideo AudioAC Adapter BatteryEnvironmental PhysicalAbbreviations and Acronyms Transferring Information to a New Computer Start the Files and Settings Transfer WizardClick Files and Settings Transfer Wizard Back to Contents Travel Tips Traveling With Your ComputerIdentifying Your Computer Packing the ComputerBack to Contents When to Use the Dell Diagnostics TroubleshootingDell Technical Update Service Dell DiagnosticsOption Function Dell Diagnostics Main MenuClicking the Dell Support Icon Drive ProblemsAccessing the Dell Support Utility Dell Support UtilityIf you hear an unfamiliar scraping or grinding sound CD and DVD drive problemsHard drive problems Problems writing to a CD/DVD-RW driveError Messages Mail, Modem, and Internet ProblemsVerify that the modem is communicating with Windows Page Click Start→ Control Panel→ Add or Remove Programs Keyboard Problems Ieee 1394 Device ProblemsExternal Keyboard problems Computer stops responding Lockups and Software ProblemsUnexpected characters Computer does not start upSolid blue screen appears Memory ProblemsNetwork Problems Other software problemsRestart the computer and log on to the network again PC Card or ExpressCard ProblemsWireless Local Area Network Wlan Mobile Broadband NetworkEnsuring Sufficient Power for Your Computer Power ProblemsDocking Power Considerations Docking While the Computer Is Running Printer ProblemsScanner Problems AC Power Loss While the Computer Is DockedNo sound from integrated speakers Sound and Speaker ProblemsTouch Pad or Mouse Problems No sound from headphonesIf the display is blank Video and Display ProblemsIf the display is difficult to read Connect an external monitor Adjust the Windows display settingsIf only part of the display is readable Click Start→ Control Panel→ Appearance and Themes

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