Dell E521 specifications Back to Contents

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1.Ensure that all cables are connected, and fold cables out of the way.

2.Ensure that no tools or extra parts are left inside the computer.

3.Align the bottom of the cover with the tabs located along the bottom edge of the computer.

4.Using the tabs as leverage, rotate the cover downward and press down to close it.

1

computer cover

2

back of computer

3

bottom hinge tabs

 

 

 

 

 

 

5. Ensure that the cover is seated correctly before moving it to the upright position.

NOTICE: To connect a network cable, first plug the cable into the network device and then plug it into the computer.

6.Connect your computer and devices to electrical outlets, and turn them on.

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Contents Model Dcsm About Your Computer Front View of the ComputerBack Panel Connectors Back View of the ComputerBack to Contents Advanced Troubleshooting Power LightsDiagnostic Lights Light Pattern Problem Description Suggested ResolutionBeep Codes System MessagesCode Cause Click the Change or Remove Program icon Diskette read failureDell Diagnostics Starting the Dell DiagnosticsDell Diagnostics Main Menu What Is a Driver?Drivers Identifying DriversReinstalling Drivers Using Windows XP Device Driver RollbackManually Reinstalling Drivers Windows XPResolving Software and Hardware Incompatibilities Click Start, then click Help and SupportBefore You Begin Getting StartedRecommended Tools Turning Off Your ComputerBack to Contents Removing and Installing Parts Removing the Computer CoverMemory Installation Guidelines MemoryAddressing Memory With 4-GB Configurations Installing MemoryCards Removing MemoryInstalling a PCI Card PCI CardsPage Removing a PCI Card Installing a PCI Express Card PCI Express CardsPage Removing a PCI Express Card Drive Panel Removing the Drive PanelInstalling the Drive-Panel Insert Installing the Drive PanelRemoving the Drive-Panel Insert Connecting Drive Cables DrivesDrive Interface Connectors Connecting and Disconnecting Drive CablesHard Drive Installing a Hard Drive Removing a Hard DrivePage Floppy Drive Adding a Second Hard DriveRemoving a Floppy Drive Installing a Floppy Drive Media Card Reader Removing a Media Card ReaderInstalling a Media Card Reader CD/DVD Drive Removing a CD/DVD DriveInstalling a CD/DVD Drive Page Battery Power SupplyReplacing the Battery Replacing the Power Supply Processor Removing the ProcessorInstalling the Processor Page Panel Removing the I/O PanelInstalling the I/O Panel Processor FanRemoving the Processor Fan Installing the Processor Fan System Board Removing the System BoardSystem Board Screws Installing the Computer Cover Installing the System BoardBack to Contents September 2006 Rev. A00 Specifications Connectors DrivesControls and Lights Power PhysicalEnvironmental System Setup Entering System SetupSystem Setup Screen OverviewSystem Setup Options Onboard DevicesBypass is Not SetUnlocked Boot Sequence Option SettingsChanging Boot Sequence for the Current Boot Setup & Boot MenuClearing Forgotten Passwords Changing Boot Sequence for Future BootsClearing Cmos Settings Flashing the BiosClick Save this program to disk, and then click OK Technical Overview Inside View of Your ComputerSystem Board Components Power Supply DC Connector Pin Assignments Pin Number Signal name AWG WireDC Power Connector P2 DC Power Connector P10