Intel DH55HC manual Serial Header, Serial Port Header, Pin Signal Name RXD# Receive Data

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Installing and Replacing Desktop Board Components

Figure 23, J shows the location of the front panel USB 2.0 header (with Intel Z-U130 USB Solid-State Drive (or Compatible Device) Support) and Table 14 shows its pin assignments and signal names.

Table 14. Front Panel USB Header (with Intel Z-U130 USB Solid-State Drive (or Compatible Device) Support) Signal Names

Pin Signal Name

1+5 VDC

3D-

5D+

7Ground

9KEY (no pin)

Pin

Signal Name

2+5 VDC

4D-

6D+

8Ground

10LED#

NOTE

Computer systems that have an unshielded cable attached to a USB port might not meet FCC Class B requirements, even if no device or a low-speed USB device is attached to the cable. Use a shielded cable that meets the requirements for a full-speed USB device.

Serial Header

Figure 23, K shows the location of the serial header. Table 15 shows the pin assignments and signal names for the serial header.

Table 15. Serial Port Header

Pin Signal Name

1DCD (Data Carrier Detect)

3TXD# (Transmit Data)

5

Ground

7RTS (Request To Send)

9RI (Ring Indicator)

Pin

Signal Name

 

 

2

RXD# (Receive Data)

4DTR (Data Terminal Ready)

6DSR (Data Set Ready)

8CTS (Clear To Send)

10Key (no pin)

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Contents Intel Desktop Board DH55HC Product Guide FCC Declaration of Conformity Canadian Department of Communications Compliance StatementDisclaimer Conventions Intended AudienceUse Only for Intended Applications Document OrganizationTerminology Intel Desktop Board DH55HC Product GuideTerm Description 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 Processor Intel H55 Express ChipsetOnline Support Analog Display VGA Main MemoryGraphics Subsystem Integrated GraphicsPCI Express* x16 Graphics High-Definition Multimedia Interface* HdmiDigital Visual Interface DVI-D LAN Subsystem Audio SubsystemUSB 2.0 Support Serial ATA SupportLED Color LED State Indicates 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 IntrusionFan Headers LAN Wake CapabilitiesInstantly Available PC Technology 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 ComponentsInstallation Precautions Prevent Power Supply OverloadObserve Safety and Regulatory Requirements 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 Installing a Processor Fan Heat Sink Connecting the Processor Fan Heat Sink CableRemoving the Processor Installing and Removing System Memory Guidelines for Dual Channel Memory ConfigurationTwo or Four DIMMs Three DIMMs Example Dual Channel Memory Configuration with Four DIMMsUse DDR3 DIMMs Installing DIMMsInstalling a Dimm Installing and Removing PCI Express x16 Graphics Cards Installing a PCI Express x16 Graphics CardRemoving DIMMs 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 HeaderAlternate Front Panel Power LED Header Chassis Intrusion HeaderIntel Rpat Header Front Panel USB 2.0 Headers Front Panel Header Signal NamesUSB 2.0 Header Signal Names Front Panel HeaderPin Signal Name RXD# Receive Data Serial HeaderSerial Port 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 JumperClearing Passwords Jumper Settings for the Bios Setup Program ModesJumper Setting Mode Description 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 UtilityBios Error Codes Bios Beep CodesType Pattern Frequency/Comments 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 Product Ecology Statements Recycling ConsiderationsRegulatory Compliance Malay DeutschEspañol FrançaisPortuguese RussianTürkçe 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 EMC Regulations EMC RegulationsRegulation Class B Title Ensure Electromagnetic Compatibility EMC Compliance Product Certifications Board-Level Certification MarkingsProduct Certification Markings Europe Chassis and Component CertificationsIntel Desktop Board DH55HC Product Guide