Dell E521 specifications

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1

alignment bar

2

fully seated card

3

not fully seated card

 

 

 

 

 

 

4

alignment guide

5

bracket within slot

6

bracket caught outside of slot

 

 

 

 

 

 

8. Before you close the card retention door, ensure that:

The tops of all cards and filler brackets are flush with the alignment bar.

The notch in the top of the card or filler bracket fits around the alignment guide.

1

alignment guide

2

alignment bar

3

release tab

 

 

 

 

 

 

4

card retention door

 

 

 

 

 

 

 

 

 

 

9. Close the card retention door by snapping it into place to secure the cards.

NOTICE: Do not route card cables over or behind the cards. Cables routed over the cards can prevent the computer cover from closing properly or cause damage to the equipment.

10.On a new card, connect any cables that are part of the installation. See the documentation for the card for information about the card's cable connections. On a replacement card, connect any cables that you removed in step 5.

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

11.Replace the computer cover (see Installing the Computer Cover).

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

13.If you installed a sound card:

a.Enter system setup (see System Setup), go to Onboard Devices and select Integrated Audio, and then change the setting to Off.

b.Connect external audio devices to the sound card's connectors. Do not connect external audio devices to the microphone, speaker/headphone, or line-in connectors on the back panel.

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Contents Model Dcsm Front View of the Computer About Your ComputerBack View of the Computer Back Panel ConnectorsBack to Contents Light Pattern Problem Description Suggested Resolution Advanced TroubleshootingPower Lights Diagnostic LightsSystem Messages Beep CodesCode Cause Diskette read failure Click the Change or Remove Program iconStarting the Dell Diagnostics Dell DiagnosticsIdentifying Drivers Dell Diagnostics Main MenuWhat Is a Driver? DriversWindows XP Reinstalling DriversUsing Windows XP Device Driver Rollback Manually Reinstalling DriversClick Start, then click Help and Support Resolving Software and Hardware IncompatibilitiesTurning Off Your Computer Before You BeginGetting Started Recommended ToolsBack to Contents Removing the Computer Cover Removing and Installing PartsMemory Memory Installation GuidelinesInstalling Memory Addressing Memory With 4-GB ConfigurationsRemoving Memory CardsPCI Cards Installing a PCI CardPage Removing a PCI Card PCI Express Cards Installing a PCI Express CardPage Removing a PCI Express Card Removing the Drive Panel Drive PanelInstalling the Drive Panel Installing the Drive-Panel InsertRemoving the Drive-Panel Insert Drives Connecting Drive CablesConnecting and Disconnecting Drive Cables Drive Interface ConnectorsHard Drive Removing a Hard Drive Installing a Hard DrivePage Adding a Second Hard Drive Floppy DriveRemoving a Floppy Drive Installing a Floppy Drive Removing a Media Card Reader Media Card ReaderInstalling a Media Card Reader Removing a CD/DVD Drive CD/DVD DriveInstalling a CD/DVD Drive Page Power Supply BatteryReplacing the Battery Replacing the Power Supply Removing the Processor ProcessorInstalling the Processor Page Removing the I/O Panel PanelProcessor Fan Installing the I/O PanelRemoving the Processor Fan Installing the Processor Fan Removing the System Board System BoardSystem Board Screws Installing the System Board Installing the Computer CoverBack to Contents September 2006 Rev. A00 Specifications Drives ConnectorsControls and Lights Physical PowerEnvironmental Overview System SetupEntering System Setup System Setup ScreenOnboard Devices System Setup OptionsNot Set Bypass isUnlocked Setup & Boot Menu Boot SequenceOption Settings Changing Boot Sequence for the Current BootChanging Boot Sequence for Future Boots Clearing Forgotten PasswordsFlashing the Bios Clearing Cmos SettingsClick Save this program to disk, and then click OK Inside View of Your Computer Technical OverviewSystem Board Components Pin Number Signal name AWG Wire Power Supply DC Connector Pin AssignmentsDC Power Connector P2 DC Power Connector P10