Dell C521 specifications Back View of the Computer, Back Panel I/O Connectors

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NOTICE: Ensure that there is a minimum of two inches of space between all vents and any object near these vents.

NOTICE: Keep the vent area clean and dust-free to ensure that the system is adequately ventilated. Use only a dry cloth to clean the vent area to avoid water damage to the system.

Back View of the Computer

1

voltage selection

See the safety instructions in the Product Information Guide for more

 

 

switch

information.

 

2

power connector

Insert the power cable.

 

 

 

 

 

3

back panel I/O

Plug VGA, USB, and other devices into the appropriate connectors.

 

 

connectors

See Back Panel I/O Connectors.

 

 

 

 

 

4

card slots (3)

Access connector slots for expansion cards:

 

 

 

SLOT1 PCI Express x16

 

 

 

SLOT2 PCI Express x1

 

 

 

SLOT3 PCI

 

 

 

 

 

 

 

 

 

Back Panel I/O Connectors

1

link integrity light

Green — A good connection exists between a 10-Mbps

 

 

network and the computer.

 

 

Orange — A good connection exists between a 100-Mbps

 

 

network and the computer.

 

 

Off — The computer is not detecting a physical connection to

 

 

the network.

 

 

 

2

network adapter

 

 

connector

 

 

 

NOTICE: Do not plug a telephone cable into the network

 

 

connector.

 

 

Use the network adapter connector to attach your computer to a

 

 

network or broadband device. Connect one end of a network cable

 

 

to either a network jack or your network or broadband device, and

 

 

then connect the other end of the network cable to the network

 

 

adapter connector on your computer. A click indicates that the

 

 

network cable has been securely attached.

 

 

On computers with an additional network connector card, use the

 

 

connectors on the card and on the back of the computer when

 

 

setting up multiple network connections (such as a separate intra-

 

 

and extranet).

 

 

 

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Contents September 2006 Rev. A00 Front View About Your ComputerBack View of the Computer Back Panel I/O ConnectorsBack to Contents Turning Off Your Computer Before You BeginGetting Started Recommended ToolsPage Replacing the Computer Cover Removing the Computer Cover Removing and Installing Parts MemoryDDR2 Memory Overview Installing Memory Removing Memory CardsInstalling an Expansion Card Removing an Expansion Card Drives Connecting and Disconnecting Drive Cables General Installation GuidelinesDrive Interface Connectors Power Cable ConnectorInstalling a CD/DVD Drive CD/DVD DriveRemoving a CD/DVD Drive Removing a Floppy Drive Floppy DriveInstalling a Floppy Drive Removing a Media Card Reader Media Card ReaderInstalling a Media Card Reader Removing a Hard Drive Hard DriveInstalling a Hard Drive Replacing the Battery BatteryRemoving the Processor ProcessorInstalling the Processor Page Replacing the Power Supply Power SupplyRemoving the Front I/O Panel Front I/O PanelFan Assembly Installing the Front I/O PanelRemoving the Fan Assembly Installing the Fan Assembly System BoardRemoving the System Board Replacing the System Board Page Specifications Connectors DrivesControls and Lights Power PhysicalEnvironmental Overview System SetupEntering System Setup OverviewSystem System Setup Options64MB Post Behavior Boot MenuJumper Locations Clearing Password Settings Clearing Forgotten Passwords and Cmos SettingsClearing Cmos Settings Flashing the BiosTechnical Overview Inside View of Your ComputerSystem Board Components Jumper Setting Description Jumper SettingsPower Supply DC Connector Pin Assignments DC Power Connector P1Pin Number Signal name AWG Wire DC Power Connector P5 and P6 DC Power Connector P2DC Power Connector P3 DC Power Connector P4Black +12 VDC Yellow September 2006 Rev. A00 Dell Diagnostics Main Menu TroubleshootingDell Diagnostics When to Use the Dell DiagnosticsSystem Lights Diagnostic LightsPower Light Problem Description Suggested Resolution Problem Description Suggested ResolutionCode Cause Beep Codes