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Dell 720H2C appendix DC Power Connector P2, DC Power Connector P3 Graphics Card

Models: 720H2C

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+5 VDC	Red	+5 VDC	Red
COM	Black	COM	Black

DC Power Connector P2

		1-KW Power Supply			750-KW Power Supply

Pin Number	Signal name		18-AWG Wire Color	Signal name		18-AWG Wire Color

1	+12 VC DC		Blue/White	+12 VC DC		Blue/White

2	+12 VC DC		Blue/White	+12 VC DC		Blue/White

3	COM		Black	COM		Black

4	COM		Black	COM		Black
5	+12	VA DC/SE	Yellow	+12	VA DC/SE	Yellow

6	+12	VA DC	Yellow	+12	VA DC	Yellow

7	COM		Black	COM		Black

8	COM		Black	COM		Black

9	+12	VB DC/SE	White	+12	VB DC/SE	White

10	+12	VB DC	White	+12	VB DC	White

11	+12 VC DC/SE		Blue/White	+12 VC DC/SE		Blue/White

12	COM		Black	COM		Black
13	COM		Black	COM		Black

14	COM		Black	COM		Black

15	+12	VA DC	Yellow	+12	VA DC	Yellow

16	COM		Black	COM		Black

17	COM		Black	COM		Black

18	COM		Black	COM		Black

19	+12	VB DC	White	+12	VB DC	White

20	NC		N/A	NC		N/A

DC Power Connector P3 (Graphics Card)

		1-KW Power Supply		750-KW Power Supply

Pin Number	Signal name		18-AWG Wire Color	Signal name	18-AWG Wire Color

1	+12	VE DC/SE	Blue/Yellow	+12 VB DC	White
2	+12	VE DC	Blue/Yellow	+12 VB DC	White

3	+12	VE DC	Blue/Yellow	+12 VB DC	White

4	COM		Black	COM	Black

5	COM		Black	COM	Black

6	COM		Black	COM	Black

Image 69

Dell 720H2C appendix DC Power Connector P2, DC Power Connector P3 Graphics Card

Contents

Back to Contents Specifications Controls and Lights ConnectorsEnvironmental PhysicalEntering System Setup System SetupSystem Setup Options System Setup ScreensSystem DrivesOnboard Devices Performance LED ControlSecurity Power ManagementMaintenance Off Do not use the Auto Power TimeTime Post BehaviorOption Settings Boot SequenceChanging Boot Sequence for the Current Boot Setup & Boot Menu defaultClearing Forgotten Passwords Changing Boot Sequence for Future Boots¡ In Windows XP, click Start→ Turn Off Computer→ Turn off Clearing Cmos Settings Cleaning Your ComputerComputer, Keyboard, and Monitor Mouse FCC Notices U.S. OnlyFloppy Drive CDs and DVDsContacting Dell Class BFCC Identification Information Aruba Argentina Buenos AiresAustralia Sydney Technical Support 0011Canada North York, Ontario BruneiCayman Islands Chile SantiagoDenmark Copenhagen Czech Republic PragueDominica Dominican RepublicGreece Germany FrankfurtGrenada GuatemalaSales Customer ServiceBusiness computers Sales Ireland CherrywoodLatin America Korea SeoulLuxembourg Support.ap.dell.comNicaragua New Zealand Support.ap.dell.comNorway Lysaker PanamaSlovakia Prague Singapore SingaporeSouth Africa Johannesburg 09/091Taiwan Customer Service BracknellThailand Trinidad/TobagoA. Austin, Texas Financial ServicesVirgin Islands VenezuelaSupport.dell.com Find It HereClick Help and Support ¡ In Windows XP, click Start and click Help and SupportGlossary Docking device See APR Device driver See driverPage Page NIC See network adapter Module bay See media bayPage Video resolution See resolution Back to Contents Recommended Tools Before You BeginPreparing to Work Inside Your Computer Windows XP, click Start→ Turn Off Computer→ Turn offInside View of Your Computer Removing the Computer CoverFrntusb System Board ComponentsDDR2 Memory Overview MemoryInstalling Memory Addressing Memory ConfigurationsRemoving Memory CardsRemoving PCI and PCI Express Cards Installing PCI and PCI Express Cards Page Page Page Page Drives Network Adapter and Sound Card SettingsHard Drive General Drive Installation GuidelinesAbout Serial ATA Drives Removing a Hard DrivePage Installing a Hard Drive Removing the Drive Panel Drive PanelFloppy Drive Replacing the Drive PanelRemoving a Floppy Drive Installing a Floppy Drive Removing a Media Card Reader Media Card ReaderInstalling a Media Card Reader Optical Drive Removing an Optical Drive Installing an Optical Drive Liquid Cooling Assembly Safety Instructions for Liquid Cooling AssemblyRemoving the Liquid Cooling Assembly Tecpump Installing the Liquid Cooling Assembly ProcessorRemoving the Processor Installing the Processor Removing the Card Fan FansInstalling the Card Fan System Board Installing the Optional Hard Drive FanRemoving the Optional Hard Drive Fan Removing the System BoardInstalling the System Board Power Supply PSU DC Connector Pin Assignments Power SupplyKW Power Supply Pin Number Signal name AWG Wire Color DC Power Connector P1DC Power Connector P3 Graphics Card DC Power Connector P2DC Power Connector P5 FD1 DC Power Connector P4 Graphics CardDC Power Connector P6 and P7 BAY1 and Bay2 DC Power Connectors P8 and P9 HDD0 and HDD1DC Power Connectors P10-P13 HDD2 and HDD5 DC Power Connectors P14 PeripheralDC Power Connector P15 Graphics Card 1-KW PSU Only Removing the Power Supply DC Power Connector P16 Graphics Card 1-KW PSU OnlyPin Number Signal Name AWG Wire Color Installing the Power Supply Front I/O Panel Front I/O-Panel ComponentsRemoving the Front I/O Panel Installing the I/O Panel Battery Replacing the BatteryRemoving the Computer Stand Replacing the Computer Cover Back to Contents Understanding CPU Overclocking Understanding Dual-Graphics TechnologyDell QuickSet Front View Front and Back View of the ComputerTo ensure maximum system stability. Failure to install Front I/O ConnectorsBack View Resulting in bodily injury or damage to the computerBack I/O Connectors RCA S/PDIF Attaching the Computer StandInstalling Your Computer in an Enclosure Connecting Monitors Connecting a Monitor With an Adapter Connecting a Monitor Without an AdapterConnecting a Monitor in a Dual Graphics Card Configuration Connecting a TV Connecting Two or More MonitorsRAID Level 0 Configuration About Your RAID ConfigurationRAID Level 1 Configuration RAID Level 0+1 ConfigurationRAID Level 5 Configuration Configuring Your Hard Drives for RAID Setting Your Computer to RAID-Enabled ModeUsing the Nvidia MediaShield ROM Utility Using Nvidia MediaShield Creating a RAID ArrayClick Create under System Tasks Deleting a RAID Array Free Disk Selection window appearsClearing System Data window appears Rebuilding a RAID Configuration Using MultimediaCopying CD, DVD, and Blu-ray Disc BD Media How to Copy a CD, DVD, or BDUsing Blank CD, DVD, and BD Media Helpful TipsMedia Type Read Write Rewritable MMC/RS-MMC Using a Media Card Reader OptionalNetwork Setup Wizard Click Checklist for creating a networkTransferring Information to a New Computer Power Management Options in Windows XP Standby ModeHibernate Mode Power Schemes Tab Power Options PropertiesAdvanced Tab Hibernate TabPower Management Options in Windows Vista Sleep ModeConfiguring Power Management Settings Battery Problems Solving ProblemsDrive Problems Click Start and click My ComputerOptical drive problems Mail, Modem, and Internet ProblemsProblems writing to an optical drive Hard drive problemsClick Start → All Programs→ Modem Diagnostic Tool Error MessagesClick Uninstall Click Start→ All Programs→ Modem HelperKeyboard Problems Ieee 1394 Device ProblemsLockups and Software Problems Mouse Problems Memory ProblemsOther software problems Solid blue screen appearsPower Problems Network ProblemsClick Start→ Control Panel→ Mouse Click Start → Control Panel→ Hardware and Sound→ MouseScanner Problems Printer ProblemsClick Start → Control Panel→ Hardware and Sound→ Printer Click Properties and click PortsSound and Speaker Problems No sound from headphonesNo sound from speakers Screen is blank Screen is difficult to read Video and Monitor Problems3D image quality is poor Click Start→ Control Panel→ Appearance and ThemesPower Lights Diagnostic LightsProblem Description Suggested Resolution Code Cause Beep CodesMessage Possible Cause Corrective Action System MessagesDell Diagnostics When to Use Dell DiagnosticsStarting Dell Diagnostics From Your Hard Drive Dell Diagnostics Main Menu Option FunctionTab Function Drivers What Is a Driver?Identifying Drivers Click Start → Computer.→ System Properties→ Device ManagerManually Reinstalling Drivers Using the Drivers and Utilities MediaUsing Microsoft Windows System Restore Starting System RestoreRestoring Your Operating System Undoing the Last System Restore Using Dell PC Restore and Dell Factory Image RestoreEnabling System Restore Windows XP Dell PC RestoreSelect Repair Your Computer Windows Vista Dell Factory Image RestoreReinstalling Windows XP or Windows Vista Using the Operating System MediaClick Dell Factory Image Restore Before you BeginClick Start and click Help and Support Troubleshooting Software and Hardware Problems