Dell C521 specifications Power Supply DC Connector Pin Assignments, DC Power Connector P1

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Power Supply DC Connector Pin Assignments

DC Power Connector P1

Pin Number	Signal name	18-AWG Wire

1	+3.3 VDC	Orange

2	+3.3 VDC	Orange

3	GND	Black

4	VCC (+5 V)	Red

5	GND	Black

6	VCC (+5 V)	Red

7	GND	Black

8	PS_PWRGOOD	Gray

9	P5AUX	Purple

10	V_12P0_DIG	White

11	V_12P0_DIG	White

12	+3.3 V	Orange

13	+3.3 V	Orange

14	-12 V*	Blue

15	GND	Black

16	PWR_PS_ON	Green

17	GND	Black

18	GND	Black

19	GND	Black

20	NC	N/C

21	VCC (+5V)	Red

22	VCC (+5V)	Red

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Contents September 2006 Rev. A00 About Your Computer Front ViewBack Panel I/O Connectors Back View of the ComputerBack to Contents Before You Begin Getting StartedRecommended Tools Turning Off Your ComputerPage Replacing the Computer Cover Removing the Computer Cover DDR2 Memory Overview Removing and Installing PartsMemory Installing Memory Cards Removing MemoryInstalling an Expansion Card Removing an Expansion Card Drives General Installation Guidelines Drive Interface ConnectorsPower Cable Connector Connecting and Disconnecting Drive CablesRemoving a CD/DVD Drive Installing a CD/DVD DriveCD/DVD Drive Floppy Drive Removing a Floppy DriveInstalling a Floppy Drive Media Card Reader Removing a Media Card ReaderInstalling a Media Card Reader Hard Drive Removing a Hard DriveInstalling a Hard Drive Battery Replacing the BatteryProcessor Removing the ProcessorInstalling the Processor Page Power Supply Replacing the Power SupplyFront I/O Panel Removing the Front I/O PanelRemoving the Fan Assembly Fan AssemblyInstalling the Front I/O Panel Removing the System Board Installing the Fan AssemblySystem Board Replacing the System Board Page Specifications Controls and Lights ConnectorsDrives Environmental PowerPhysical System Setup Entering System SetupOverview OverviewSystem Setup Options System64MB Boot Menu Post BehaviorClearing Forgotten Passwords and Cmos Settings Jumper Locations Clearing Password Settings Flashing the Bios Clearing Cmos SettingsSystem Board Components Technical OverviewInside View of Your Computer Jumper Settings Jumper Setting DescriptionPin Number Signal name AWG Wire Power Supply DC Connector Pin AssignmentsDC Power Connector P1 DC Power Connector P2 DC Power Connector P3DC Power Connector P4 DC Power Connector P5 and P6Black +12 VDC Yellow September 2006 Rev. A00 Troubleshooting Dell DiagnosticsWhen to Use the Dell Diagnostics Dell Diagnostics Main MenuDiagnostic Lights Power Light Problem Description Suggested ResolutionProblem Description Suggested Resolution System LightsBeep Codes Code Cause