Resumen del contenido incluido en la página 1 
                    
                         
 
 
 
 
 
 
 
 
Intel® Desktop Board DH55HC  
Product Guide 
 
Order Number:  E78886-002                                                                                                                                                                                                                                                                                                                                                                                                                          
                    
                    Resumen del contenido incluido en la página 2 
                    
                          Revision History  Revision Revision History Date  ® -001 First release of the Intel Desktop Board DH55HC Product Guide October 2009  ® -002 Second release of the Intel Desktop Board DH55HC Product Guide March 2011      If an FCC declaration of conformity marking is present on the board, the following statement applies:  FCC Declaration of Conformity  This device complies with Part 15 of the FCC Rules.  Operation is subject to the following two conditions:  (1) this device may not cause harmful
                    
                    Resumen del contenido incluido en la página 3 
                    
                          Preface  This Product Guide gives information about board layout, component installation, BIOS  ® update, and regulatory requirements for Intel Desktop Board DH55HC.  Intended Audience  The Product Guide is intended for technically qualified personnel.  It is not intended for  general audiences.  Use Only for Intended Applications  All Intel Desktop Boards are evaluated as Information Technology Equipment (I.T.E.)  for use in personal computers (PC) for installation in homes, offices, schools,
                    
                    Resumen del contenido incluido en la página 4 
                    
                        Intel Desktop Board DH55HC Product Guide  Terminology  The table below gives descriptions of some common terms used in the product guide.  Term Description  GB Gigabyte (1,073,741,824 bytes)  GHz Gigahertz (one billion hertz)  KB Kilobyte (1024 bytes)  MB Megabyte (1,048,576 bytes)  Mb Megabit (1,048,576 bits)  MHz Megahertz (one million hertz)    iv                                                                                                                                                    
                    
                    Resumen del contenido incluido en la página 5 
                    
                          Contents  1 Desktop Board Features  Supported Operating Systems..............................................................................11  Desktop Board Components.................................................................................12  Processor..........................................................................................................14  ® Intel H55 Express Chipset .................................................................................14  Main Memory.
                    
                    Resumen del contenido incluido en la página 6 
                    
                        Intel Desktop Board DH55HC Product Guide  2 Installing and Replacing Desktop Board Components  Before You Begin ...............................................................................................27  Installation Precautions.......................................................................................28  Prevent Power Supply Overload ....................................................................28  Observe Safety and Regulatory Requirements..............................
                    
                    Resumen del contenido incluido en la página 7 
                    
                        Contents  A Error Messages and Indicators  BIOS Error Codes...............................................................................................67  BIOS Error Messages..........................................................................................68  B Regulatory Compliance  Safety Standards ...............................................................................................69  Place Battery Marking ..................................................................
                    
                    Resumen del contenido incluido en la página 8 
                    
                        Intel Desktop Board DH55HC Product Guide  Tables  1. Feature Summary.......................................................................................... 9  2. Intel Desktop Board DH55HC Components .......................................................13  3. LAN Connector LEDs .....................................................................................18  4. Front Panel Audio Signal Names for Intel HD Audio............................................47  5. Front Panel Audio Header
                    
                    Resumen del contenido incluido en la página 9 
                    
                          1 Desktop Board Features  ® This chapter briefly describes the features of Intel Desktop Board DH55HC.  Table 1  summarizes the major features of the Desktop Board.  Table 1. Feature Summary  ATX (304.80 millimeters [12.00 inches] x 243.84 millimeters  Form Factor  [9.60 inches])  ® ® ® • Intel Core™ i7, Intel Core™ i5, Intel Core™ i3, and  Processor  ® Intel Pentium processors in an LGA1156 socket:    ® ― Integrated graphics processing (processors with Intel Graphics  Technology)  ― External 
                    
                    Resumen del contenido incluido en la página 10 
                    
                        Intel Desktop Board DH55HC Product Guide  Table 1. Feature Summary (continued)  • Twelve USB 2.0 ports:   Peripheral  Interfaces  ― Six ports are implemented with stacked back panel connectors  ― Six ports are implemented with three dual-port internal  headers; one header supports an Intel Z-U130 USB Solid-State  Drive (or compatible device)   • Six Serial ATA (SATA) 3.0 Gb/s ports, two ports compatible with  eSATA adapters  • One serial port header  • One parallel port header  • One PS/2 back p
                    
                    Resumen del contenido incluido en la página 11 
                    
                        Desktop Board Features  Supported Operating Systems  The Desktop Board supports the following operating systems:    • Microsoft Windows* 7 Ultimate 64-bit edition  • Microsoft Windows 7 Ultimate 32-bit edition  • Microsoft Windows 7 Home Basic 64-bit edition  • Microsoft Windows 7 Home Premium 64-bit edition  • Microsoft Windows 7 Home Premium 32-bit edition  • Microsoft Windows 7 Home Basic 32-bit edition  • Microsoft Windows Vista* Ultimate 32-bit edition  • Microsoft Windows Vista Business 32
                    
                    Resumen del contenido incluido en la página 12 
                    
                        Intel Desktop Board DH55HC Product Guide  Desktop Board Components  Figure 1 shows the approximate location of the major components on Intel Desktop  Board DH55HC.    Figure 1.  Intel Desktop Board DH55HC Components  12                                                                                                                                                                                                                                                                                         
                    
                    Resumen del contenido incluido en la página 13 
                    
                        Desktop Board Features  Table 2. Intel Desktop Board DH55HC Components  Label Description  A PCI bus add-in card connector  B PCI bus add-in connector  C PCI bus add-in connector  D PCI Express 2.0 x1 add-in card connector   E Battery   F PCI Express 2.0 x1 add-in card connector   G PCI Express 2.0 x16 add-in card connector   H Back panel connectors   I 12 V processor core voltage connector (2 x 2 pin)   J Rear chassis fan header   K Processor socket   L Processor fan header  M DDR3 Channel A, D
                    
                    Resumen del contenido incluido en la página 14 
                    
                        Intel Desktop Board DH55HC Product Guide  Online Support  For more information on Intel Desktop Board DH55HC consult the following online  resources:  • Intel Desktop Board DH55HC http://www.intel.com/products/motherboard/DH55HC /index.htm   • Desktop Board Support http://support.intel.com/support/motherboards/deskt op/DH55HC  • Available configurations for Intel http://www.intel.com/products/motherboard/DH55HC Desktop Board DH55HC /index.htm   • Supported processors http://processormatch.intel.
                    
                    Resumen del contenido incluido en la página 15 
                    
                        Desktop Board Features  Main Memory    NOTE    ® To be fully compliant with all applicable Intel  SDRAM memory specifications, the  board should be populated with DIMMs that support the Serial Presence Detect (SPD)  data structure.  If your memory modules do not support SPD, you will see a  notification to this effect on the screen at power up.  The BIOS will attempt to  configure the memory controller for normal operation.    The board has four DIMM sockets and supports the following memory fea
                    
                    Resumen del contenido incluido en la página 16 
                    
                        Intel Desktop Board DH55HC Product Guide  High-Definition Multimedia Interface* (HDMI*)  The HDMI port supports standard, enhanced, or high-definition video, plus multi- channel digital audio on a single cable.  It is compatible with all ATSC and DVB HDTV  standards and supports 8-channel digital audio.  The maximum supported resolution is  1920 x 1200 at 60 Hz refresh (WUXGA).  The HDMI port is compliant with the  HDMI 1.3 specification.   The HDMI port is enabled for the POST whenever a monito
                    
                    Resumen del contenido incluido en la página 17 
                    
                        Desktop Board Features  Audio Subsystem   The board supports Intel High Definition Audio through a Realtek ALC888S audio codec  as well as through the HDMI interface.  The Realtek ALC888S-based audio subsystem provides the following features:  • Advanced jack sense for the back panel audio connectors that enables the audio  codec to recognize the device that is connected to an audio port.  The back panel  audio connectors are capable of retasking according to the user’s definition, or can  be au
                    
                    Resumen del contenido incluido en la página 18 
                    
                        Intel Desktop Board DH55HC Product Guide    Figure 2.  LAN Connector LEDs   Table 3. LAN Connector LEDs  LED LED Color LED State Indicates  A (Link/Activity) Green Off LAN link is not established   On LAN link is established    Blinking LAN activity is occurring  B (Link Speed) N/A Off 10 Mb/s data rate  Green On  100 Mb/s data rate  Yellow On 1000 Mb/s data rate  USB 2.0 Support   The board supports up to twelve USB 2.0 ports provided by two EHCI host controllers  in the PCH that allow the use 
                    
                    Resumen del contenido incluido en la página 19 
                    
                        Desktop Board Features  Expandability  Intel Desktop Board DH55HC provides the following expansion capability:   • One PCI Express 2.0 x16 port   • Two PCI Express 2.0 x1 ports  • Three PCI bus interfaces  Legacy I/O   The board’s Legacy I/O Controller provides the following legacy features:  • One serial port header   • One parallel port header with Extended Capabilities Port (ECP) and Enhanced  Parallel Port (EPP) support  • Serial IRQ interface compatible with serialized IRQ support for PCI C
                    
                    Resumen del contenido incluido en la página 20 
                    
                        Intel Desktop Board DH55HC Product Guide  Security Passwords  The BIOS includes security features that restrict whether the BIOS Setup program can  be accessed and who can boot the computer.  A supervisor password and a user  password can be set for the BIOS Setup and for booting the computer, with the  following restrictions:    • The supervisor password gives unrestricted access to view and change all Setup  options.  If only the supervisor password is set, pressing  at the password  pr