Dell E521 specifications Back to Contents

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network speed to 10 Mbps to ensure reliable operation.

 

3

network activity

Flashes a yellow light when the computer is transmitting or

 

 

light

receiving network data. A high volume of network traffic may make

 

 

 

this light appear to be in a steady "on" state.

 

4

surround

Use the black surround connector to attach multichannel-capable

 

 

connector

speakers.

 

 

 

 

 

5

line-in connector

Use the blue line-in connector to attach a record/playback device

 

 

 

such as a cassette player, CD player, or VCR.

 

 

 

On computers with a sound card, use the connector on the card.

 

 

 

 

 

6

line-out connector

Use the green line-out connector (available on computers with

 

 

 

integrated sound) to attach headphones and most speakers with

 

 

 

integrated amplifiers.

 

 

 

On computers with a sound card, use the connector on the card.

 

 

 

 

 

7

microphone

Use the pink connector to attach a personal computer microphone

 

 

 

for voice or musical input into a sound or telephony program.

 

 

 

On computers with a sound card, the microphone connector is on

 

 

 

the card.

 

8

side surround

Use the silver connector to provide enhanced surround audio for

 

 

connector

computers with 7.1 speakers.

 

 

 

On computers with a sound card, the microphone connector is on

 

 

 

the card.

 

 

 

 

 

9

center/subwoofer

Use the yellow connector to attach a speaker to a Low Frequency

 

 

connector

Effects (LFE) audio channel.

 

10

USB 2.0 connectors

Use the back USB connectors for devices that typically remain

 

 

(4)

connected, such as printers and keyboards.

 

 

 

It is recommended that you use the front USB connectors for

 

 

 

devices that you connect occasionally, such as joysticks or cameras.

 

 

 

 

 

11

VGA video

Connect the monitor's VGA cable to the VGA connector on the

 

 

connector

computer.

 

 

 

On computers with a video card, use the connector on the card.

 

 

 

 

 

 

 

 

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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 ResolutionSystem Messages Beep CodesCode 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 Installing the Drive-Panel InsertRemoving the Drive-Panel Insert Connecting Drive Cables DrivesConnecting and Disconnecting Drive Cables Drive Interface ConnectorsHard 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 Power Supply BatteryReplacing the Battery Replacing the Power Supply Processor Removing the ProcessorInstalling the Processor Page Panel Removing the I/O PanelProcessor Fan Installing the I/O PanelRemoving the Processor Fan Installing the Processor Fan Removing the System Board System BoardSystem Board Screws Installing the Computer Cover Installing the System BoardBack to Contents September 2006 Rev. A00 Specifications Drives ConnectorsControls and Lights Physical PowerEnvironmental System Setup Entering System SetupSystem Setup Screen OverviewSystem Setup Options Onboard DevicesNot Set Bypass isUnlocked 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 Inside View of Your Computer Technical OverviewSystem Board Components Power Supply DC Connector Pin Assignments Pin Number Signal name AWG WireDC Power Connector P2 DC Power Connector P10