Intel DH55HC manual +5 V Standby Power Indicator LED, Location of the Standby Power Indicator

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Desktop Board Features

The Desktop Board supports the PCI Bus Power Management Interface Specification. Add-in cards that support this specification can participate in power management and can be used to wake the computer.

The use of Instantly Available PC technology requires operating system support and PCI 2.2 compliant add-in cards, PCI Express add-in cards, and drivers.

+5 V Standby Power Indicator LED

CAUTION

If the AC power has been switched off and the standby power indicator is still lit, disconnect the power cord before installing or removing any devices connected to the board. Failure to do so could damage the board and any attached devices.

The Desktop Board’s standby power indicator, shown in Figure 3, is lit when there is standby power still present on the board even when the computer appears to be off. For example, when this green LED is lit, standby power is still present at the memory module sockets and the PCI bus connectors.

Figure 3. Location of the Standby Power Indicator

For more information on standby current requirements for the Desktop Board, refer to the Technical Product Specification at http://support.intel.com/support/motherboards/desktop/

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Contents Intel Desktop Board DH55HC Product Guide Disclaimer FCC Declaration of ConformityCanadian Department of Communications Compliance Statement Conventions Intended AudienceUse Only for Intended Applications Document OrganizationTerm Description TerminologyIntel Desktop Board DH55HC Product Guide Contents Installing and Replacing Desktop Board Components Regulatory Compliance ContentsTables Processor Feature SummaryInstantly Available PeripheralInterfaces LAN SupportSupported Operating Systems Desktop Board FeaturesIntel Desktop Board DH55HC Components Desktop Board ComponentsLabel Description Online Support ProcessorIntel H55 Express Chipset Analog Display VGA Main MemoryGraphics Subsystem Integrated GraphicsDigital Visual Interface DVI-D PCI Express* x16 GraphicsHigh-Definition Multimedia Interface* Hdmi LAN Subsystem Audio SubsystemLED Color LED State Indicates USB 2.0 SupportSerial ATA Support Legacy I/O Serial ATA Auto ConfigurationPCI*/PCI Express Auto Configuration ExpandabilityFan Monitoring Security PasswordsHardware Management Hardware Monitoring and Fan Speed ControlSoftware Support Power ManagementPower Connectors Chassis IntrusionInstantly Available PC Technology Fan HeadersLAN Wake Capabilities Location of the Standby Power Indicator +5 V Standby Power Indicator LEDEnergy STAR*, e-Standby, and ErP Compliance Real-Time Clock Subsystem SpeakerIntel Desktop Board DH55HC Product Guide Before You Begin Installing and Replacing Desktop Board ComponentsObserve Safety and Regulatory Requirements Installation PrecautionsPrevent Power Supply Overload Installing and Replacing Desktop Board Components Installing the I/O ShieldIntel Desktop Board DH55HC Mounting Screw Hole Locations Installing and Removing the Desktop BoardInstalling a Processor Installing and Removing a ProcessorLift the Load Plate Remove the Socket Cover Remove the Processor from the Protective Cover Lower the Load Plate Removing the Processor Installing a Processor Fan Heat SinkConnecting the Processor Fan Heat Sink Cable Two or Four DIMMs Installing and Removing System MemoryGuidelines for Dual Channel Memory Configuration Three DIMMs Example Dual Channel Memory Configuration with Four DIMMsUse DDR3 DIMMs Installing DIMMsInstalling a Dimm Removing DIMMs Installing and Removing PCI Express x16 Graphics CardsInstalling a PCI Express x16 Graphics Card Removing a PCI Express x16 Graphics Card Installing a PCI Express x16 Graphics CardRemoving a PCI Express x16 Graphics Card Connecting a Serial ATA Cable Connecting Serial ATA Sata CablesInstalling and Replacing Desktop Board Components Internal Headers Connecting to the Internal HeadersInternal Mono Speaker Header Front Panel Audio Signal Names for Intel HD AudioFront Panel Audio Header Signal Names for AC ’97 Audio Front Panel Audio HeaderParallel Port Header Pdif Header Signal NamesPdif Header Parallel Port HeaderIntel Rpat Header Alternate Front Panel Power LED HeaderChassis Intrusion Header Front Panel USB 2.0 Headers Front Panel Header Signal NamesUSB 2.0 Header Signal Names Front Panel HeaderSerial Port Header Pin Signal Name RXD# Receive DataSerial Header Back Panel Audio Connectors Connecting to the Audio SystemConnecting Chassis Fan Cables Connecting Chassis Fan and Power Supply CablesConnecting Power Supply Cables Connecting Power Supply CablesLocation of the Bios Configuration Jumper Block Setting the Bios Configuration JumperJumper Setting Mode Description Clearing PasswordsJumper Settings for the Bios Setup Program Modes Précaution Replacing the BatteryViktigt Προσοχή Внимание Installing and Replacing Desktop Board Components Removing the Battery Updating the Bios Obtaining the Bios Update File Updating the Bios Updating the Bios with the ISO Image Bios Update FileRecovering the Bios Updating the Bios with the Iflash Memory Update UtilityType Pattern Frequency/Comments Bios Error CodesBios Beep Codes Error Message Explanation Bios Error MessagesFront-panel Power LED Blink Codes Bios Error MessagesRegulation Title Safety StandardsPlace Battery Marking Safety StandardsEuropean Union Declaration of Conformity Statement Regulatory Compliance Product Ecology StatementsRecycling Considerations Malay DeutschEspañol FrançaisTürkçe PortugueseRussian Lead-free 2LI/Pb-free 2LI Board Description Mark Restriction of Hazardous Substances RoHSEU RoHS Lead-Free Second Level Interconnect MarksChina RoHS Environmentally Friendly Use Period Mark China RoHSRegulatory Compliance Regulation Class B Title EMC RegulationsEMC Regulations Ensure Electromagnetic Compatibility EMC Compliance Product Certification Markings Product CertificationsBoard-Level Certification Markings Europe Chassis and Component CertificationsIntel Desktop Board DH55HC Product Guide