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Dell E521 specifications DC Power Connector P10

Models: E521

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Pin Number	Signal Name	22-AWG Wire
1	+5 VDC	Red

2	GND	Black

3	GND	Black

4	+12 VADC	Yellow

DC Power Connector P10

Pin Number	Signal name	18-AWG Wire

1	+12 VBDC	White

2	GND	Black

3	GND	Black

4	+5 VDC	Red

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Dell E521 specifications DC Power Connector P10

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 LightsBeep Codes System MessagesCode 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 Insert Installing the Drive PanelRemoving the Drive-Panel Insert Drives Connecting Drive CablesDrive Interface Connectors Connecting and Disconnecting Drive CablesHard 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 Battery Power SupplyReplacing the Battery Replacing the Power Supply Removing the Processor ProcessorInstalling the Processor Page Removing the I/O Panel PanelInstalling the I/O Panel Processor FanRemoving the Processor Fan Installing the Processor Fan System Board Removing the System BoardSystem Board Screws Installing the System Board Installing the Computer CoverBack to Contents September 2006 Rev. A00 Specifications Connectors DrivesControls and Lights Power PhysicalEnvironmental Overview System SetupEntering System Setup System Setup ScreenOnboard Devices System Setup OptionsBypass is Not SetUnlocked 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 Technical Overview Inside View of Your ComputerSystem Board Components Pin Number Signal name AWG Wire Power Supply DC Connector Pin AssignmentsDC Power Connector P2 DC Power Connector P10