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Dell 720H2C appendix System Board Components, Frntusb

Models: 720H2C

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1	optical drive bays (4)	2	floppy drive/media card reader	3	hard drive bays (4)

4	card fan	5	liquid cooling assembly

System Board Components

1	white memory module	2	black memory module	3	hard drive fan connector
	connectors (DIMM_1-2)		connectors (DIMM_3-		(FAN_HDD)
			4)

4	IDE drive connector	5	front I/O panel	6	back LED connector
	(IDE)		connector
			(FRONTPANEL)
7	power button	8	FlexBay connector	9	main power connector
	(PWR_BT)		(INT_USB)		(POWER1)

10	SATA connectors	11	front USB connector	12	front panel 1394 connector
	(SATA0-5)		(FRNT_USB)		(FP1394)

13	PCI-Express x1 card	14	PCI-Express x16 card	15	PCI card slot (SLOT3)
	slot (SLOT1)		slot (SLOT2)
					This slot is not available in the
	This slot is not				dual-graphics or double-width,
	available in the dual-				single graphics configuration.
	graphics configuration

16	PCI-Express x16 card	17	PCI card slot (SLOT5)	18	PCI card slot (SLOT6)

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Dell 720H2C appendix System Board Components, Frntusb

Contents

Back to Contents Specifications Controls and Lights ConnectorsEnvironmental PhysicalEntering System Setup System SetupSystem Setup Options System Setup ScreensDrives SystemOnboard 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 defaultChanging Boot Sequence for Future Boots Clearing Forgotten Passwords¡ In Windows XP, click Start→ Turn Off Computer→ Turn off Cleaning Your Computer Clearing Cmos SettingsComputer, Keyboard, and Monitor Mouse FCC Notices U.S. OnlyFloppy Drive CDs and DVDsClass B Contacting DellFCC 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 PanelReplacing the Drive Panel Floppy DriveRemoving 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 Safety Instructions for Liquid Cooling Assembly Liquid Cooling AssemblyRemoving the Liquid Cooling Assembly Tecpump Processor Installing the Liquid Cooling AssemblyRemoving 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 P14 Peripheral DC Power Connectors P10-P13 HDD2 and HDD5DC Power Connector P15 Graphics Card 1-KW PSU Only DC Power Connector P16 Graphics Card 1-KW PSU Only Removing the Power SupplyPin Number Signal Name AWG Wire Color Installing the Power Supply Front I/O-Panel Components Front I/O PanelRemoving the Front I/O Panel Installing the I/O Panel Replacing the Battery 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 0+1 Configuration RAID Level 1 ConfigurationRAID Level 5 Configuration Setting Your Computer to RAID-Enabled Mode Configuring Your Hard Drives for RAIDUsing the Nvidia MediaShield ROM Utility Creating a RAID Array Using Nvidia MediaShieldClick Create under System Tasks Free Disk Selection window appears Deleting a RAID ArrayClearing 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 BDHelpful Tips Using Blank CD, DVD, and BD MediaMedia Type Read Write Rewritable MMC/RS-MMC Using a Media Card Reader OptionalClick Checklist for creating a network Network Setup WizardTransferring Information to a New Computer Standby Mode Power Management Options in Windows XPHibernate Mode Power Schemes Tab Power Options PropertiesAdvanced Tab Hibernate TabSleep Mode Power Management Options in Windows VistaConfiguring 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 PortsNo sound from headphones Sound and Speaker ProblemsNo 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 ThemesDiagnostic Lights Power LightsProblem Description Suggested Resolution Code Cause Beep CodesMessage Possible Cause Corrective Action System MessagesWhen to Use Dell Diagnostics Dell DiagnosticsStarting Dell Diagnostics From Your Hard Drive Option Function Dell Diagnostics Main MenuTab Function Drivers What Is a Driver?Identifying Drivers Click Start → Computer.→ System Properties→ Device ManagerManually Reinstalling Drivers Using the Drivers and Utilities MediaStarting System Restore Using Microsoft Windows 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

System Board Components

(FRNT_USB)