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Intel® Desktop Board DX79TO  
Product Guide 
 
Order Number:  G44000-001                                                                                                                                                                                                                                                                                                                                                                                                                          
                    
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                          Revision History  Revision Revision History Date  ® -001 First release of the Intel Desktop Board DX79TO Product Guide October 2011                    Disclaimer  ® INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL PRODUCTS.  NO LICENSE,  EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS  GRANTED BY THIS DOCUMENT.  EXCEPT AS PROVIDED IN INTEL’S TERMS AND CONDITIONS OF SALE FOR  SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DI
                    
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                          Preface  This Product Guide gives information about board layout, component installation, BIOS  ® update, and regulatory requirements for Intel Desktop Board DX79TO.  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,
                    
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                        Intel Desktop Board DX79TO 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                                                                                                                                                    
                    
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                          Contents  1 Desktop Board Features  Supported Operating Systems..............................................................................11  Desktop Board Components.................................................................................12  Processor..........................................................................................................14  System Memory.................................................................................................15  Memory Conf
                    
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                        Intel Desktop Board DX79TO Product Guide  2 Installing and Replacing Desktop Board Components  Before You Begin ...............................................................................................31  Installation Precautions.......................................................................................32  Prevent Power Supply Overload ....................................................................32  Observe Safety and Regulatory Requirements..............................
                    
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                        Contents  B Regulatory Compliance  Safety Standards ...............................................................................................75  Battery Caution..........................................................................................75  European Union Declaration of Conformity Statement..............................................76  Product Ecology Statements ................................................................................77  Recycling Considerations ....
                    
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                        Intel Desktop Board DX79TO Product Guide  Tables  1. Feature Summary.......................................................................................... 9  2. Intel Desktop Board DX79TO Components........................................................13  3. LAN Connector LEDs .....................................................................................19  4. System Initialization LEDs..............................................................................28  5. Status LEDs..
                    
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                          1 Desktop Board Features  ® This chapter briefly describes the features of Intel Desktop Board DX79TO.  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])  ® ® ® Processor Support for Intel Core™ i7 and Intel Xeon processors in the  LGA2011 package with:  • Two PCI Express* 3.0 x16 graphics interfaces (x16 electrical)  • Quad-channel memory interface  Main Memory Eight 
                    
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                        Intel Desktop Board DX79TO Product Guide  Table 1. Feature Summary (continued)  • Two USB 3.0 ports routed to the back panel  Peripheral  Interfaces  • Fourteen USB 2.0 ports:   ― Six ports routed to the back panel  ― Eight ports routed to four onboard USB headers   • Two IEEE 1394a ports:   ― One port routed to the back panel   ― One port routed to an IEEE 1394a header  • Six Serial ATA (SATA) channels through the Intel X79 PCH:  ― Two onboard 6.0 Gb/s SATA channels (blue connectors)  ― Four on
                    
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                        Desktop Board Features  Supported Operating Systems  The Desktop Board provides full support for the following operating systems:    • Microsoft Windows* 7 Ultimate (64-bit and 32-bit editions)  • Microsoft Windows 7 Professional (64-bit and 32-bit editions)  • Microsoft Windows 7 Home Premium (64-bit and 32-bit editions)  • Microsoft Windows 7 Starter (64-bit and 32-bit editions)  • Microsoft Windows Vista* Ultimate (64-bit and 32-bit editions)  • Microsoft Windows Vista Business (64-bit and 32
                    
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                        Intel Desktop Board DX79TO Product Guide  Desktop Board Components  Figure 1 shows the approximate location of the major components on Intel Desktop  Board DX79TO.    Figure 1.  Intel Desktop Board DX79TO Components  12                                                                                                                                                                                                                                                                                         
                    
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                        Desktop Board Features  Table 2. Intel Desktop Board DX79TO Components  Label Description  A Front panel audio header   B PCI Express x1 connector  C PCI Express x1 connector  D Speaker  E PCI bus connector  F PCI Express 3.0 x16 connector  G PCI Express x1 connector  H PCI Express 3.0 x16 connector  I Rear chassis fan header  J Battery   K Back panel connectors  L Processor fan header  M DIMM 1 socket  N DIMM 5 socket  O DIMM 2 socket  P DIMM 6 socket  Q Processor socket   R 12 V processor core
                    
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                        Intel Desktop Board DX79TO Product Guide    Online Support  For more information on Intel Desktop Board DX79TO consult the following online  resources:  • Intel Desktop Board DX79TO http://www.intel.com/products/motherboard/index.htm   • Desktop Board Support http://www.intel.com/p/en_US/support?iid=hdr+support  • Available configurations for http://ark.intel.com   Intel Desktop Board DX79TO  • Supported processors http://processormatch.intel.com  • Chipset information http://www.intel.com/produ
                    
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                        Desktop Board Features  System 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 Desktop Board supports the following memory and interface:  • Eig
                    
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                        Intel Desktop Board DX79TO Product Guide  Memory Configurations  The Intel Core i7 and Intel Xeon processors support the following types of memory  organization:  • Quad-channel (Interleaved) mode.  Quad-channel mode offers the highest  throughput for real world applications.  • Tri-channel (Interleaved) mode.  Tri-channel mode is enabled when the installed  memory capacities of any three DIMM channels are equal.  • Dual-channel (Interleaved) mode.  Dual-channel mode is enabled when the  install
                    
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                        Desktop Board Features  ® Intel X79 Express Chipset  The Intel X79 Express Chipset consisting of the Intel X79 Platform Controller Hub  (PCH) provides interfaces to the processor and the USB, SATA, LAN, PCI, and PCI  Express interfaces.  The PCH is the centralized controller for the board’s I/O paths.  Go to the following link for more information about the Intel X79 Express Chipset:  http://developer.intel.com/products/chipsets/index.htm   USB Support   The Desktop Board supports USB 3.0 and US
                    
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                        Intel Desktop Board DX79TO Product Guide  Audio Subsystem   The onboard audio subsystem consists of the following components:  • Intel X79 Express Chipset  • RealTek ALC892 codec  The subsystem has the following headers and connectors:  • Three back panel analog audio connectors  • High Definition (HD) Audio front panel header that provides mic in and line out  signals for front panel audio connectors  The audio subsystem supports the following features:  • Advanced jack sense for the back panel
                    
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                        Desktop Board Features  Two LEDs are built into the RJ-45 LAN connector located on the back panel (see  Figure 3).  These LEDs indicate the status of the LAN.      Figure 3.  LAN Connector LEDs   Table 3 describes the LED states when the board is powered up and the LAN  subsystem is operating.  Table 3. LAN Connector LEDs  LED LED Color LED State Indicates  A Green Off LAN link is not established   On LAN link is established    Blinking LAN activity is occurring  B N/A Off 10 Mb/s data rate  Gre
                    
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                        Intel Desktop Board DX79TO Product Guide  BIOS  The BIOS provides the Power-On Self-Test (POST), the BIOS Setup program, and the  PCI/PCI Express and IDE auto-configuration utilities.  The BIOS is stored in the Serial  Peripheral Interface (SPI) Flash device.  The BIOS can be updated by following the instructions on page 63 in Chapter 3.  Serial ATA and IDE Auto Configuration  If you install a Serial ATA or IDE device (such as a hard drive) in your computer, the  auto-configuration utility in th