Intel DG41MJ User Manual

Intel® Desktop Board DG41MJ  
Product Guide  
Order Number: E59138-001  
Preface  
This Product Guide gives information about board layout, component installation, BIOS  
update, and regulatory requirements for Intel® Desktop Board DG41MJ.  
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, computer  
rooms, and similar locations. The suitability of this product for other PC or embedded  
non-PC applications or other environments, such as medical, industrial, alarm systems,  
test equipment, etc. may not be supported without further evaluation by Intel.  
Document Organization  
The chapters in this Product Guide are arranged as follows:  
1 Desktop Board Features: a summary of product features  
2 Installing and Replacing Desktop Board Components: instructions on how to install  
the Desktop Board and other hardware components  
3 Updating the BIOS: instructions on how to update the BIOS  
A Error Messages and Indicators: information about BIOS error messages and beep  
codes  
B Regulatory Compliance: information about safety standards, EMC regulations, and  
product certifications  
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Intel Desktop Board DG41MJ Product Guide  
Conventions  
The following conventions are used in this manual:  
CAUTION  
Cautions warn the user about how to prevent damage to hardware or loss of data.  
NOTE  
Notes call attention to important information.  
Terminology  
The table below gives descriptions of some common terms used in the product guide.  
Term  
GB  
Description  
Gigabyte (1,073,741,824 bytes)  
Gigabit (1,073,741,824 bits)  
Gigahertz (one billion hertz)  
Kilobyte (1024 bytes)  
Gb  
GHz  
KB  
MB  
Megabyte (1,048,576 bytes)  
Megabit (1,048,576 bits)  
Megahertz (one million hertz)  
Mb  
MHz  
iv  
Contents  
1 Desktop Board Features  
Desktop Board Components.................................................................................11  
Processor..........................................................................................................12  
Main Memory.....................................................................................................13  
Intel® G41 Express Chipset .................................................................................14  
Graphics Support........................................................................................14  
Intel® GMA X4500 Graphics Controller....................................................14  
DVI Support .......................................................................................14  
Audio Subsystem ...............................................................................................15  
Legacy Input/Output (I/O) Controller....................................................................15  
LAN Subsystem .................................................................................................16  
USB 2.0 Support................................................................................................17  
Serial ATA.........................................................................................................17  
Expandability.....................................................................................................17  
BIOS................................................................................................................17  
Serial ATA and IDE Auto Configuration...........................................................17  
PCI* Auto Configuration ..............................................................................17  
Security Passwords.....................................................................................18  
Hardware Management Features ..........................................................................18  
Hardware Monitoring and Fan Speed Control ..................................................18  
Power Management Features...............................................................................19  
ACPI.........................................................................................................19  
Hardware Support ......................................................................................19  
Power Connectors ...............................................................................19  
Fan Headers.......................................................................................20  
LAN Wake Capabilities..........................................................................20  
Instantly Available PC Technology..........................................................20  
+5 V Standby Power Indicator LED ........................................................21  
Wake from USB Support.......................................................................22  
PME# Signal Wake-up Support..............................................................22  
Wake From PS/2 Devices......................................................................22  
Wake From Serial Devices ....................................................................22  
ENERGY STAR* Capable ..............................................................................22  
Speaker............................................................................................................22  
Battery.............................................................................................................22  
Real-Time Clock.................................................................................................22  
2 Installing and Replacing Desktop Board Components  
Before You Begin ...............................................................................................23  
Installation Precautions.......................................................................................24  
Prevent Power Supply Overload....................................................................24  
Observe Safety and Regulatory Requirements.................................................24  
Installing the I/O Shield......................................................................................25  
Installing and Removing the Desktop Board...........................................................26  
Installing and Removing a Processor.....................................................................27  
Installing a Processor..................................................................................27  
Installing the Processor Fan Heat Sink...........................................................31  
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Intel Desktop Board DG41MJ Product Guide  
Connecting the Processor Fan Heat Sink Cable................................................31  
Removing the Processor ..............................................................................31  
Installing and Removing Memory..........................................................................32  
Installing DIMMs ........................................................................................33  
Removing DIMMs........................................................................................35  
Using the Serial ATA (SATA) Cables......................................................................35  
Connecting a Standard SATA Drive................................................................36  
Connecting a Slimline SATA Drive .................................................................37  
Connecting to the Internal Headers and Connectors................................................38  
Front Panel Audio Header ............................................................................39  
Chassis Intrusion Header.............................................................................39  
USB 2.0 Headers........................................................................................40  
Serial Port Header ......................................................................................40  
Alternate Front Panel Power LED Header........................................................41  
Front Panel Header .....................................................................................41  
Connecting to the Back Panel Audio Connectors......................................................42  
Connecting Chassis Fan and Power Supply Cables...................................................43  
Connecting a Chassis Fan Cable....................................................................43  
Connecting Supply Power Cables ..................................................................44  
Setting the BIOS Configuration Jumper .................................................................45  
Clearing Passwords ............................................................................................46  
Replacing the Battery .........................................................................................47  
3 Updating the BIOS  
Updating the BIOS with the Intel® Express BIOS Update Utility.................................53  
Updating the BIOS with the ISO Image BIOS Update File or the Iflash Memory Update  
Utility .........................................................................................................54  
Obtaining the BIOS Update File ....................................................................54  
Updating the BIOS with the ISO Image BIOS Update File .................................54  
Updating the BIOS with the Iflash Memory Update Utility .................................55  
Recovering the BIOS...................................................................................56  
A Error Messages and Indicators  
BIOS Beep Codes...............................................................................................57  
BIOS Error Messages..........................................................................................57  
B Regulatory Compliance  
Safety Standards ...............................................................................................59  
Place Battery Marking .................................................................................59  
European Union Declaration of Conformity Statement..............................................60  
Product Ecology Statements ................................................................................61  
Recycling Considerations .............................................................................61  
Lead-Free Desktop Board.............................................................................63  
EMC Regulations................................................................................................65  
Ensure Electromagnetic Compatibility (EMC) Compliance..................................66  
Product Certifications..........................................................................................67  
Board-Level Certification Markings ................................................................67  
Chassis and Component Certifications............................................................68  
vi  
Contents  
Figures  
1. Intel Desktop Board DG41MJ Components ........................................................11  
2. LAN Connector LEDs ......................................................................................16  
3. Location of the Standby Power Indicator...........................................................21  
4. Installing the I/O Shield .................................................................................25  
5. Intel Desktop Board DG41MJ Mounting Screw Hole Locations...............................26  
6. Lift the Socket Lever......................................................................................27  
7. Lift the Load Plate .........................................................................................28  
8. Remove the Protective Socket Cover................................................................28  
9. Remove the Processor from the Protective Processor Cover .................................29  
10. Install the Processor .....................................................................................29  
11. Close the Load Plate......................................................................................30  
12. Connecting the Processor Fan Heat Sink Cable to the Processor Fan Header..........31  
13. Dual Channel Memory Configuration Example ...................................................32  
14. Use DDR2 DIMMs .........................................................................................33  
15. Installing a DIMM .........................................................................................34  
16. Using the Standard SATA Cable ......................................................................36  
17. Using the SATA-to-Slimline SATA Adapter Cable................................................37  
18. Internal Headers and Connectors....................................................................38  
19. Back Panel Audio Connectors..........................................................................42  
20. Location of the Chassis Fan Header .................................................................43  
21. Connecting Power Supply Cables.....................................................................44  
22. Location of the BIOS Configuration Jumper Block ..............................................45  
23. Removing the Battery ...................................................................................51  
Tables  
1. Feature Summary........................................................................................... 9  
2. Intel Desktop Board DG41MJ Components.........................................................12  
3. Audio Jack Retasking Support..........................................................................15  
4. LAN Connector LEDs ......................................................................................16  
5. Front Panel Audio Signal Names for Intel HD Audio.............................................39  
6. Front Panel Audio Header Signal Names for AC’97 Audio .....................................39  
7. Chassis Intrusion Header Signal Names ............................................................39  
8. USB 2.0 Header Signal Names.........................................................................40  
9. Serial Port Header Signal Names......................................................................40  
10. Alternate Front Panel Power LED Header Signal Names ......................................41  
11. Front Panel Header Signal Names....................................................................41  
12. Jumper Settings for the BIOS Setup Program Modes..........................................46  
13. Beep Codes..................................................................................................57  
14. BIOS Error Messages.....................................................................................57  
15. Safety Standards..........................................................................................59  
16. Lead-Free Board Markings..............................................................................64  
17. EMC Regulations...........................................................................................65  
18. Product Certification Markings ........................................................................67  
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Intel Desktop Board DG41MJ Product Guide  
viii  
1 Desktop Board Features  
This chapter briefly describes the features of Intel® Desktop Board DG41MJ. Table 1  
summarizes the major features of the Desktop Board.  
Table 1. Feature Summary  
Mini-ITX (170.18 millimeters [6.70 inches] x 170.18 millimeters  
[6.70 inches])  
Form Factor  
Processor  
Support for an Intel® processor in the LGA775 package  
Main Memory  
Two 240-pin, DDR2 SDRAM Dual Inline Memory Module (DIMM)  
sockets  
800/667 MHz single or dual channel DDR2 SDRAM interface  
Support for up to 8 GB of system memory  
Chipset  
Intel® G41 Express Chipset consisting of:  
Intel G41 Express Chipset Graphics and Memory Controller Hub  
(GMCH) with Intel® Graphics Media Accelerator X4500 (Intel® GMA  
X4500)  
Intel® 82801GB I/O Controller Hub (ICH7)  
Graphics  
Audio  
Intel G41 Express Chipset Graphics and Memory Controller Hub  
(GMCH)  
Integrated graphics (Intel® GMA X4500) with VGA and DVI-D  
outputs  
One PCI* bus connector supporting PCI graphics cards  
5.1 channel in single-stream mode or 4 + 2 channel in multi-  
streaming mode, featuring:  
Realtek* ALC888VC audio codec  
Support for Intel® High Definition Audio (Intel® HD Audio) and  
AC ’97 Audio  
LAN Support  
Realtek 8111D Gigabit Ethernet Controller for operation at  
10/100/1000 Mb/s  
Expansion  
One PCI bus connector  
Capabilities  
Peripheral  
Interfaces  
Up to eight USB 2.0 ports:  
Four ports routed to the back panel  
Four ports routed to two USB headers  
Three Serial ATA (SATA) channels (3.0 Gb/s) via ICH7  
One serial port header  
PS/2* keyboard port on the back panel  
continued  
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Intel Desktop Board DG41MJ Product Guide  
Table 1. Feature Summary (continued)  
BIOS  
Intel® Platform Innovation Framework for extensible firmware  
interface  
8 Mb symmetrical flash memory device  
Support for SMBIOS  
Intel® Rapid BIOS Boot  
Intel® Express BIOS Update  
Power Management Support for Advanced Configuration and Power Interface (ACPI)  
Suspend to RAM (STR)  
Wake on USB, LAN, PS/2, and front panel  
ENERGY STAR* capable  
Hardware Monitor  
Voltage sense to detect out of range power supply voltages  
Thermal sense to detect out of range temperatures  
Two fan headers  
Two fan sense inputs to monitor fan speed  
The Desktop Board supports the following operating systems:  
Microsoft Windows Vista* Home Premium  
Microsoft Windows Vista Home Basic  
Supported  
Operating Systems  
Microsoft Windows Vista Home Premium 64-bit edition  
Microsoft Windows Vista Home Basic 64-bit edition  
Microsoft Windows* XP Media Center Edition 2005  
Microsoft Windows XP Professional  
Microsoft Windows XP Professional x64 Edition  
Microsoft Windows XP Home  
For more information on Intel Desktop Board DG41MJ consult the following online  
resources:  
To find information  
about…  
Visit this World Wide Web site:  
Intel Desktop Board  
DG41MJ  
Desktop Board Support  
Available configurations  
for Intel Desktop Board  
DG41MJ  
Supported processors  
Chipset information  
BIOS and driver updates  
Integration information  
10  
Desktop Board Features  
Desktop Board Components  
Figure 1 shows the approximate location of the major components on Intel Desktop  
Board DG41MJ.  
Figure 1. Intel Desktop Board DG41MJ Components  
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Intel Desktop Board DG41MJ Product Guide  
Table 2. Intel Desktop Board DG41MJ Components  
Label  
Description  
A
B
C
D
E
F
Front panel audio header  
Back panel connectors  
12 V processor core voltage connector (2 x 2 pin)  
High-speed USB 2.0 headers (2)  
BIOS configuration jumper block  
Alternate front panel power LED header  
Processor socket  
G
H
I
Chassis fan header  
Processor fan header  
J
Serial port header  
K
L
Main power connector (2 x 12 pin)  
Battery  
M
N
O
P
Speaker  
DDR2 Channel B DIMM 0 socket  
DDR2 Channel A DIMM 0 socket  
Front panel header  
Q
R
Serial ATA connectors (3)  
PCI bus connector  
Processor  
CAUTION  
Failure to use an appropriate power supply and/or not connecting the 12 V (2 x 2 pin)  
power connector to the Desktop Board may result in damage to the board, or the  
system may not function properly.  
Intel Desktop Board DG41MJ supports an Intel processor in the LGA775 package.  
Processors are not included with the Desktop Board and must be purchased  
separately. The processor connects to the Desktop Board through the LGA775 socket  
For instructions on installing a processor, refer to page 27 in Chapter 2.  
12  
   
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 Desktop Board has two DIMM sockets that support the memory features listed  
below:  
DDR2 SDRAM DIMMs with the option in the BIOS setup to raise the voltage to  
support higher performance DDR2 SDRAM DIMMs  
Support for:  
Non-ECC DDR2 800/667 MHz memory  
Serial Presence Detect (SPD) memory only  
Unbuffered, non-registered single- or double-sided DIMMs  
Memory configurations listed below:  
Up to 2.0 GB utilizing 256 Mb technology  
Up to 8.0 GB utilizing 512 Mb or 1 Gb technology  
A minimum of 512 MB of total memory is required  
NOTE  
System resources and hardware require physical memory address locations that can  
reduce available addressable system memory. This could result in a reduction of as  
much as 1 GB or more of physical addressable memory being available to the  
operating system and applications, depending on the system configuration and  
operating system.  
For instructions on installing memory, refer to page 32 in Chapter 2.  
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Intel Desktop Board DG41MJ Product Guide  
Intel® G41 Express Chipset  
The Intel G41 Express Chipset consists of the following devices:  
Intel G41 Express Chipset Graphics and Memory Controller Hub (GMCH) with Direct  
Media Interface (DMI)  
Intel 82801GB I/O Controller Hub (ICH7) with DMI  
The GMCH component provides interfaces to the processor, memory, PCI, and the DMI  
interconnect. The component also provides integrated graphics capabilities supporting  
3D, 2D, and display capabilities. ICH7 is a centralized controller for the board’s I/O  
paths.  
Graphics Support  
The Intel G41 Express Chipset supports two separate, mutually exclusive graphics  
options. Either the integrated Intel® Graphics Media Accelerator X4500 (Intel®  
GMA X4500) graphics controller is used or a PCI graphics add-in card can be used.  
When a PCI graphics add-in card is installed, the Intel GMA X4500 graphics controller  
is disabled.  
The GMA X4500 graphics controller supports dual independent displays via the VGA  
and DVI-D connectors on the Desktop Board back panel.  
Intel® GMA X4500 Graphics Controller  
The Intel GMA X4500 graphics controller has the following features:  
Advanced graphics performance, including:  
DirectX10.0* and OpenGL* 2.0 compliant  
Shader Model 4.0 support  
Enhanced video playback support, including:  
Software DVD at 30 fps full screen  
Dynamic Video Memory Technology (DVMT) 5.0  
Advanced display support, including:  
High Definition Content Protection (HDCP) version 1.1 support  
Support for all HD display resolutions including 720p, 1080i, and 1080p  
Support for digital and analog displays up to 2048 x 1536 at 75 Hz refresh rate  
(QXGA); also supports 1920 x 1080 resolution for full High Definition video  
playback quality  
DVI Support  
The DVI-D port supports digital DVI displays. The maximum supported resolution is  
2048 x 1536 at 75 Hz (QXGA). The DVI port is compliant with the DVI 1.0  
specification.  
14  
       
Desktop Board Features  
Audio Subsystem  
The onboard audio subsystem consists of the following:  
Intel® ICH7  
Realtek ALC888VC audio codec  
Back panel audio connectors (see Figure 19)  
Front panel audio header supporting both Intel High Definition Audio and AC ’97  
Audio (see Figure 18, A)  
The audio subsystem supports the following features:  
A signal-to-noise (S/N) ratio of 95 dB  
Independent 5.1 audio playback from the back panel connectors and stereo  
playback from the Intel High Definition Audio front panel header  
Table 3 lists the supported functions for the front panel and back panel audio jacks.  
Table 3. Audio Jack Retasking Support  
Rear  
Surround  
Center/  
Subwoofer  
Jack  
Mic  
Line out  
Headphones  
Line in  
Front Panel  
Green  
Pink  
No  
Yes  
No  
Yes  
No  
No  
No  
No  
No  
No  
No  
Yes  
Back Panel  
Blue  
No  
No  
Yes  
No  
Yes  
No  
No  
Yes  
No  
Yes  
No  
No  
Yes  
No  
No  
No  
No  
Yes  
Green  
Pink  
Legacy Input/Output (I/O) Controller  
The Winbond 83627DHG-P legacy I/O controller provides the following functions:  
One serial port interface via an onboard header  
One parallel port  
Serial IRQ interface compatible with serialized IRQ support for PCI systems  
Intelligent power management, including a programmable wake up event interface  
PCI power management support  
15  
     
Intel Desktop Board DG41MJ Product Guide  
LAN Subsystem  
The LAN subsystem includes:  
Intel ICH7  
Realtek 8111D-GR Gigabit Ethernet Controller for operation at 10/100/1000 Mb/s  
RJ-45 LAN connector with integrated status LEDs  
The subsystem features:  
CSMA/CD protocol engine  
LAN connect interface between ICH7 and the LAN controller  
PCI bus power management  
Two LEDs are built into the RJ-45 LAN connector located on the back panel (see  
Figure 2). These LEDs indicate the status of the LAN.  
Figure 2. LAN Connector LEDs  
Table 4 describes the LED states when the board is powered up and the LAN  
subsystem is operating.  
Table 4. LAN Connector LEDs  
LED  
LED Color  
LED State  
Off  
Indicates  
A (Link)  
Green  
LAN link is not established.  
LAN link is established.  
On  
Blinking  
Off  
LAN activity is occurring.  
10 Mb/s data rate is selected.  
100 Mb/s data rate is selected.  
1000 Mb/s data rate is selected.  
B (Data  
Rate)  
N/A  
Green  
Yellow  
On  
On  
16  
     
Desktop Board Features  
USB 2.0 Support  
The Desktop Board supports up to eight USB 2.0 ports (four ports routed to the back  
panel and four ports routed to two internal headers) via ICH7. USB 2.0 ports are  
backward compatible with USB 1.1 devices. USB 1.1 devices will function normally at  
USB 1.1 speeds.  
USB 2.0 support requires both an operating system and drivers that fully support  
USB 2.0 transfer rates. Disabling Hi-Speed USB in the BIOS reverts all USB 2.0 ports  
to USB 1.1 operation. This may be required to accommodate operating systems that  
do not support USB 2.0.  
Serial ATA  
The Desktop Board supports three Serial ATA channels (3.0 Gb/s) via ICH7, connecting  
one device per channel.  
Expandability  
For system expansion, the Desktop Board includes one PCI bus connector.  
BIOS  
The BIOS provides the Power-On Self-Test (POST), the BIOS Setup program, the PCI  
and IDE auto-configuration utilities, and the video BIOS. The BIOS is stored in the  
Serial Peripheral Interface (SPI) Flash component.  
The BIOS can be updated by following the instructions on page 53 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 the BIOS automatically detects and configures the device  
for your computer. You do not need to run the BIOS Setup program after installing a  
Serial ATA or IDE device. You can override the auto-configuration options by  
specifying manual configuration in the BIOS Setup program.  
PCI* Auto Configuration  
If you install a PCI add-in card in your computer, the PCI auto-configuration utility in  
the BIOS automatically detects and configures the resources (IRQs, DMA channels,  
and I/O space) for that add-in card. You do not need to run the BIOS Setup program  
after you install a PCI add-in card.  
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Intel Desktop Board DG41MJ 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 <Enter> at the password  
prompt of Setup gives the user restricted access to Setup.  
If both the supervisor and user passwords are set, you must enter either the  
supervisor password or the user password to access Setup. Setup options are then  
available for viewing and changing depending on whether the supervisor or user  
password was entered.  
Setting a user password restricts who can boot the computer. The password  
prompt is displayed before the computer is booted. If only the supervisor  
password is set, the computer boots without asking for a password. If both  
passwords are set, you can enter either password to boot the computer.  
For instructions on resetting the password, see Clearing Passwords on page 46.  
Hardware Management Features  
The hardware management features of Intel Desktop Board DG41MJ enable the board  
to be compatible with the Wired for Management (WfM) specification. The board has  
several hardware management features including the following:  
Fan speed monitoring and control  
Thermal and voltage monitoring  
Hardware Monitoring and Fan Speed Control  
Features of the board’s hardware monitoring and fan speed control include:  
Monitoring of power supply voltages to detect levels above and below acceptable  
values.  
Smart fan control provided by the legacy I/O controller, delivering acoustically-  
optimized thermal management. Fan speed controllers and sensors are integrated  
into the legacy I/O controller.  
Thermally monitored closed-loop fan control, for onboard fans, that can adjust fan  
speed according to thermal conditions.  
Two thermal sensors (processor and a remote thermal sensor).  
18  
     
Desktop Board Features  
Power Management Features  
Power management is implemented at several levels, including:  
Software support through the Advanced Configuration and Power Interface (ACPI)  
Hardware support:  
Power connectors  
Fan headers  
LAN wake capabilities  
Instantly Available PC technology (Suspend to RAM)  
+5 V standby power indicator LED  
Wake from USB  
Power Management Event signal (PME#) wake-up support  
Wake from PS/2 devices  
Wake from serial port  
ENERGY STAR capable  
ACPI  
ACPI gives the operating system direct control over the power management and Plug  
and Play functions of a computer. The use of ACPI with the Desktop Board requires an  
operating system that provides full ACPI support.  
Hardware Support  
Power Connectors  
ATX12V-compliant power supplies can turn off the computer power through system  
control. When an ACPI-enabled computer receives the correct command, the power  
supply removes all non-standby voltages.  
When resuming from an AC power failure, the computer returns to the power state it  
was in before power was interrupted (either on or off). The computer’s response can  
be set by using the Last Power State feature in the BIOS Setup program’s Boot menu.  
The Desktop Board has two power connectors. See Figure 21 on page 44 for the  
location of the power connectors.  
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Intel Desktop Board DG41MJ Product Guide  
Fan Headers  
The function/operation of the fans is as follows:  
The fans are on when the computer is in the ACPI S0 state.  
The fans are off when the computer is in the ACPI S3, S4, or S5 state.  
The processor fan header is wired to a fan tachometer input. The chassis fan  
header has an independent tachometer input to the hardware monitoring and fan  
control device.  
All fan headers support closed-loop fan control that can adjust the fan speed  
according to thermal conditions.  
All fan headers have a +12 V DC connection.  
The Desktop Board has a 4-pin processor fan header and a 3-pin chassis fan header.  
LAN Wake Capabilities  
CAUTION  
For LAN wake capabilities, the 5 V standby line for the power supply must be capable  
of delivering adequate +5 V standby current. Failure to provide adequate standby  
current when using this feature can damage the power supply.  
LAN wakeup capabilities enable remote wake-up of the computer through a network.  
The LAN subsystem monitors network traffic and upon detecting a Magic Packet*  
frame, it asserts a wake-up signal that powers up the computer.  
Instantly Available PC Technology  
CAUTIONS  
For Instantly Available PC technology, the 5 V standby line for the power supply must  
be capable of delivering adequate +5 V standby current. Failure to provide adequate  
standby current when using this feature can damage the power supply and/or effect  
ACPI S3 sleep state functionality.  
Power supplies used with this Desktop Board must be able to provide enough standby  
current to support the standard Instantly Available (ACPI S3 sleep state) configuration.  
If the standby current necessary to support multiple wake events from the PCI and/or  
USB buses exceeds power supply capacity, the Desktop Board may lose register  
settings stored in memory.  
Instantly Available PC technology enables the board to enter the ACPI S3 (Suspend-to-  
RAM) sleep state. While in the S3 sleep state, the computer will appear to be off. If  
the computer has a dual-colored power LED on the front panel, the sleep state is  
indicated by the LED turning amber. When signaled by a wake-up device or event, the  
computer quickly returns to its last known awake state.  
20  
     
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.  
+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 LED is lit, standby power is still present at the memory module  
sockets and the PCI bus connector.  
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  
21  
   
Intel Desktop Board DG41MJ Product Guide  
Wake from USB Support  
NOTE  
Wake from USB requires the use of a USB peripheral that supports Wake from USB.  
USB bus activity wakes the computer from an ACPI S1 or S3 state.  
PME# Signal Wake-up Support  
When the PME# signal on the PCI bus is asserted, the computer wakes from an ACPI  
S1, S3, S4, or S5 (LAN only) state.  
Wake From PS/2 Devices  
PS/2 device activity wakes the computer from an ACPI S1 or S3 state.  
Wake From Serial Devices  
Serial port activity wakes the computer from an ACPI S1 or S3 state.  
ENERGY STAR* Capable  
In 2007, the US Department of Energy and the US Environmental Protection Agency  
revised the ENERGY STAR requirements. Intel worked directly with these two  
governmental agencies to define the new requirements. This Desktop Board meets  
the ENERGY STAR Category B requirements.  
For more information concerning ENERGY STAR, go to  
Speaker  
A speaker is mounted on the Desktop Board. The speaker provides audible error code  
(beep code) information during the Power-On Self-Test (POST).  
Battery  
A battery on the Desktop Board keeps the values in CMOS RAM and the clock current  
when the computer is turned off. Go to page 47 for instructions on how to replace the  
battery.  
Real-Time Clock  
The Desktop Board has a time-of-day clock and 100-year calendar. The battery on the  
Desktop Board keeps the clock current when the computer is turned off.  
22  
               
2 Installing and Replacing Desktop  
Board Components  
This chapter tells you how to:  
Install the I/O shield  
Install and remove the Desktop Board  
Install and remove a processor  
Install and remove memory  
Use the Serial ATA cables  
Connect to the internal headers and connectors  
Connect to the audio system  
Connect chassis fan and power supply cables  
Set the BIOS configuration jumper  
Clear passwords  
Replace the battery  
Before You Begin  
CAUTION  
The procedures in this chapter assume familiarity with the general terminology  
associated with personal computers and with the safety practices and regulatory  
compliance required for using and modifying electronic equipment.  
Disconnect the computer from its power source and from any telecommunications  
links, networks, or modems before performing any of the procedures described in this  
chapter. Failure to disconnect power, telecommunications links, networks, or modems  
before you open the computer or perform any procedures can result in personal injury  
or equipment damage. Some circuitry on the board can continue to operate even  
though the front panel power button is off.  
Follow these guidelines before you begin:  
Always follow the steps in each procedure in the correct order.  
Set up a log to record information about your computer, such as model, serial  
numbers, installed options, and configuration information.  
Electrostatic discharge (ESD) can damage components. Perform the procedures  
described in this chapter only at an ESD workstation using an antistatic wrist strap  
and a conductive foam pad. If such a station is not available, you can provide  
some ESD protection by wearing an antistatic wrist strap and attaching it to a  
metal part of the computer chassis.  
23  
 
Intel Desktop Board DG41MJ Product Guide  
Installation Precautions  
When you install and test the Intel Desktop Board, observe all warnings and cautions  
in the installation instructions.  
To avoid injury, be careful of:  
Sharp pins on connectors  
Sharp pins on printed circuit assemblies  
Rough edges and sharp corners on the chassis  
Hot components (such as processors, voltage regulators, and heat sinks)  
Damage to wires that could cause a short circuit  
Observe all warnings and cautions that instruct you to refer computer servicing to  
qualified technical personnel.  
Prevent Power Supply Overload  
Do not overload the power supply output. To avoid overloading the power supply,  
make sure that the calculated total current loads of all the modules within the  
computer is less than the output current rating of each of the power supply output  
circuits.  
Observe Safety and Regulatory Requirements  
Read and adhere to the instructions in this section and the instructions supplied with  
the chassis and associated modules. If you do not follow these instructions and the  
instructions provided by the chassis and module suppliers, you increase safety risk and  
the possibility of noncompliance with regional laws and regulations. If the instructions  
for the chassis are inconsistent with these instructions or the instructions for  
associated modules, contact the supplier’s technical support to find out how you can  
ensure that your computer meets safety and regulatory requirements.  
Related Links  
For information about regulatory compliance, go to Appendix B on page 59.  
24  
     
Installing and Replacing Desktop Board Components  
Installing the I/O Shield  
The Desktop Board comes with an I/O shield. When installed in the chassis, the shield  
blocks radio frequency transmissions, protects internal components from dust and  
foreign objects, and promotes correct airflow within the chassis.  
Install the I/O shield before installing the Desktop Board in the chassis. Place the  
shield inside the chassis as shown in Figure 4. Press the shield into place so that it fits  
tightly and securely. If the shield does not fit, obtain a properly sized shield from the  
chassis supplier.  
Figure 4. Installing the I/O Shield  
25  
   
Intel Desktop Board DG41MJ Product Guide  
Installing and Removing the Desktop Board  
CAUTION  
Only qualified technical personnel should do this procedure. Disconnect the computer  
from its power source before performing the procedures described here. Failure to  
disconnect the power before you open the computer can result in personal injury or  
equipment damage.  
Refer to your chassis manual for instructions on installing and removing the Desktop  
Board.  
Figure 5 shows the location of the mounting screw holes for Intel Desktop Board  
DG41MJ.  
Figure 5. Intel Desktop Board DG41MJ Mounting Screw Hole Locations  
26  
   
Installing and Replacing Desktop Board Components  
Installing and Removing a Processor  
Instructions on how to install the processor to the Desktop Board are given below.  
Installing a Processor  
CAUTION  
Before installing or removing the processor, make sure the AC power has been  
removed by unplugging the power cord from the computer; the standby power LED  
should not be lit (see Figure 3 on page 21). Failure to do so could damage the  
processor and the board.  
To install a processor, follow these instructions:  
1. Observe the precautions in "Before You Begin" on page 23.  
2. Open the socket lever by pushing the lever down and away from the socket  
(Figure 6, A and B).  
Figure 6. Lift the Socket Lever  
27  
     
Intel Desktop Board DG41MJ Product Guide  
3. Lift the load plate (Figure 7, A). Do not touch the socket contacts (Figure 7, B).  
Figure 7. Lift the Load Plate  
4. Remove the plastic protective socket cover from the load plate (Figure 8). Do not  
discard the protective socket cover. Always replace the socket cover if the  
processor is removed from the socket.  
Figure 8. Remove the Protective Socket Cover  
28  
   
Installing and Replacing Desktop Board Components  
5. Remove the processor from the protective processor cover. Hold the processor  
only at the edges, being careful not to touch the bottom of the processor  
(Figure 9). Do not discard the protective processor cover. Always replace the  
processor cover if the processor is removed from the socket.  
Figure 9. Remove the Processor from the Protective Processor Cover  
6. Hold the processor with your thumb and index fingers oriented as shown in  
Figure 10. Make sure your fingers align to the socket cutouts (Figure 10, A). Align  
notches (Figure 10, B) with the socket (Figure 10, C). Lower the processor straight  
down without tilting or sliding it in the socket.  
Figure 10. Install the Processor  
29  
   
Intel Desktop Board DG41MJ Product Guide  
7. Pressing down on the load plate (Figure 11, A), close and engage the socket lever  
Figure 11. Close the Load Plate  
30  
 
Installing and Replacing Desktop Board Components  
Installing the Processor Fan Heat Sink  
Intel Desktop Board DG41MJ has mounting holes for a processor fan heat sink. For  
instructions on how to attach the processor fan heat sink to the Desktop Board, refer  
to the boxed processor manual.  
Connecting the Processor Fan Heat Sink Cable  
Connect the processor fan heat sink cable to the 4-pin processor fan header (see  
Figure 12). A fan with a 4-pin connector as shown in Figure 12, A is recommended;  
however, a fan with a 3-pin connector (Figure 12, B) can be used. However, since the  
fan with a 3-pin connector cannot use the onboard fan control, the fan will always  
operate at full speed.  
Figure 12. Connecting the Processor Fan Heat Sink Cable to the  
Processor Fan Header  
Removing the Processor  
For instructions on how to remove the processor fan heat sink and processor, refer to  
the processor installation manual.  
31  
       
Intel Desktop Board DG41MJ Product Guide  
Installing and Removing Memory  
NOTE  
To be fully compliant with all applicable Intel SDRAM memory specifications, the board  
requires DIMMs that support the Serial Presence Detect (SPD) data structure.  
The Desktop Board has two 240-pin DDR2 DIMM sockets providing Channel A and  
Channel B. For optimum dual-channel performance, install a matched pair of DIMMs  
equal in speed and size (see Figure 13).  
Figure 13. Dual Channel Memory Configuration Example  
NOTE  
All other memory configurations will result in single channel memory operation.  
32  
   
Installing and Replacing Desktop Board Components  
Installing DIMMs  
To make sure you have the correct DIMM, place it on the illustration of the DDR2  
DIMM in Figure 14. All the notches should match with the DDR2 DIMM.  
Figure 14. Use DDR2 DIMMs  
33  
   
Intel Desktop Board DG41MJ Product Guide  
To install a DIMM, follow these steps:  
1. Observe the precautions in "Before You Begin" on page 23.  
2. Turn off all peripheral devices connected to the computer. Turn off the computer  
and disconnect the AC power cord.  
3. Remove the computer’s cover and locate the DIMM sockets (see Figure 15).  
Figure 15. Installing a DIMM  
4. Make sure the clips at either end of the DIMM socket(s) are pushed outward to the  
open position.  
5. Holding the DIMM by the edges, remove it from its anti-static package.  
6. Position the DIMM above the socket. Align the small notch at the bottom edge of  
the DIMM with the keys in the socket (see inset in Figure 15).  
7. Insert the bottom edge of the DIMM into the socket.  
8. When the DIMM is inserted, push down on the top edge of the DIMM until the  
retaining clips snap into place. Make sure the clips are firmly in place.  
9. Replace the computer’s cover and reconnect the AC power cord.  
34  
 
Installing and Replacing Desktop Board Components  
Removing DIMMs  
To remove a DIMM, follow these steps:  
1. Observe the precautions in "Before You Begin" on page 23.  
2. Turn off all peripheral devices connected to the computer. Turn off the computer.  
3. Remove the AC power cord from the computer.  
4. Remove the computer’s cover.  
5. Gently spread the retaining clips at each end of the DIMM socket. The DIMM pops  
out of the socket.  
6. Hold the DIMM by the edges, lift it away from the socket, and store it in an  
anti-static package.  
7. Reinstall and reconnect any parts you removed or disconnected to reach the DIMM  
sockets.  
8. Replace the computer’s cover and reconnect the AC power cord.  
Using the Serial ATA (SATA) Cables  
Two SATA cables are provided with the Desktop Board:  
a standard SATA data cable  
a SATA-to-Slimline SATA adapter cable (with power) that allows you to connect a  
Slimline SATA drive to the board  
Each cable can be used to connect a single internal SATA drive to the Desktop Board.  
35  
   
Intel Desktop Board DG41MJ Product Guide  
Connecting a Standard SATA Drive  
You can use the standard SATA data cable supplied to connect a standard SATA drive  
to the Desktop Board.  
For correct cable function:  
1. Observe the precautions in “Before You Begin” on page 23.  
2. Attach one end of the SATA data cable to one of the SATA connectors on the board  
(Figure 16, A) and attach the other end of the cable to the SATA drive  
Figure 16. Using the Standard SATA Cable  
36  
   
Installing and Replacing Desktop Board Components  
Connecting a Slimline SATA Drive  
You can use the SATA-to-Slimline SATA adapter cable to connect a slimline SATA drive  
to a standard SATA data connector on the Desktop Board. This adapter splits a  
Slimline SATA connector into a standard SATA data cable and a power connector which  
plugs into a 4-pin 5 V Molex* power connector from an ATX12V power supply.  
For correct adapter cable function:  
1. Observe the precautions in “Before You Begin” on page 23.  
2. Attach the adapter cable’s standard SATA data connector (Figure 17, A) to one of  
the SATA data connectors on the Desktop Board and attach the adaptor cable’s  
Slimline connector to the corresponding connector (Figure 17, B) on the Slimline  
SATA drive.  
3. Connect the adapter cable’s power connector (Figure 17, C) to a 4-pin 5 V Molex  
power connector from the chassis power supply.  
Figure 17. Using the SATA-to-Slimline SATA Adapter Cable  
37  
   
Intel Desktop Board DG41MJ Product Guide  
Connecting to the Internal Headers and  
Connectors  
Before connecting cables to the internal headers and connectors, observe the  
precautions in “Before You Begin” on page 23. Figure 18 shows the location of the  
internal headers and connectors for Intel Desktop Board DG41MJ.  
Figure 18. Internal Headers and Connectors  
38  
   
Installing and Replacing Desktop Board Components  
Front Panel Audio Header  
The front panel audio header shown in Figure 18, A on page 38 supports both Intel HD  
Audio and AC’97 Audio. Table 5 shows the pin assignments and signal names for Intel  
HD Audio and Table 6 shows the pin assignments and signal names for AC’97 Audio.  
Table 5. Front Panel Audio Signal Names for Intel HD Audio  
Pin  
1
Signal Name  
Pin  
2
Signal Name  
GND  
PORT 1L (Microphone)  
PORT 1R (Microphone)  
PORT 2R (Headphone)  
SENSE_SEND  
3
4
PRESENCE#  
SENSE1_RETURN  
KEY (no pin)  
SENSE2_RETURN  
5
6
7
8
9
PORT 2L (Headphone)  
10  
Table 6. Front Panel Audio Header Signal Names for AC’97 Audio  
Pin  
1
Signal Name  
MIC  
Pin  
2
Signal Name  
AUD_GND  
3
MIC_BIAS  
FP_OUT_R  
AUD_5V  
4
AUD_GND  
5
6
FP_RETURN_R  
KEY (no pin)  
FP_RETURN_L  
7
8
9
FP_OUT_L  
10  
Chassis Intrusion Header  
Figure 18, B on page 38 shows the location of the chassis intrusion header. This  
header can be connected to a mechanical switch on the chassis to detect if the chassis  
cover is removed.  
Table 7 shows the pin assignments for the chassis intrusion header.  
Table 7. Chassis Intrusion Header Signal Names  
Pin  
1
Description  
Intruder  
2
Ground  
39  
         
Intel Desktop Board DG41MJ Product Guide  
USB 2.0 Headers  
Before connecting to the USB 2.0 headers, observe the precautions in "Before You  
headers. Table 8 shows the pin assignments for each USB 2.0 header. Each USB  
header can be used to connect two USB devices.  
Table 8. USB 2.0 Header Signal Names  
USB Port A  
Signal Name  
Power (+5 V)  
USB Port B  
Signal Name  
Power (+5 V)  
D-  
Pin  
1
3
Pin  
2
4
D-  
5
D+  
6
D+  
7
9
Ground  
Key  
8
10  
Ground  
No Connection  
Note: USB ports may be assigned as needed.  
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 Port Header  
See Figure 18, D on page 38 for the location of the serial port header. Table 9 shows  
the pin assignments for the serial port header.  
Table 9. Serial Port Header Signal Names  
Pin  
1
Signal Name  
DCD  
Pin  
2
Signal Name  
RXD#  
3
TXD#  
Ground  
RTS  
4
DTR  
5
6
DSR  
7
8
CTS  
9
RI  
10  
No Connection  
40  
       
Installing and Replacing Desktop Board Components  
Alternate Front Panel Power LED Header  
Figure 18, E on page 38 shows the location of the alternate front panel power LED  
header. Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front  
panel header. If your chassis has a three-pin power LED cable, connect it to this  
header.  
Table 10 shows the pin assignments for the alternate front panel power LED header.  
Table 10.Alternate Front Panel Power LED Header Signal Names  
Pin  
1
Description  
In/Out  
Front panel green LED  
No pin  
Out  
2
3
Front panel yellow LED  
Out  
Front Panel Header  
Before connecting to the front panel header, observe the precautions in "Before You  
Begin" on page 23. See Figure 18, F on page 38 for the location of the multi-colored  
front panel header.  
Table 11 shows the pin assignments for the front panel header.  
Table 11.Front Panel Header Signal Names  
Pin Description  
Hard Drive Activity LED  
Hard disk LED pull-up to +5 V Out  
In/Out Pin Description  
In/Out  
Power LED  
1
3
2
4
Front panel green LED  
Front panel yellow LED  
On/Off Switch  
Power switch  
Out  
Out  
Hard disk active LED  
Reset Switch  
Ground  
Out  
5
7
6
8
In  
Reset switch  
Power  
In  
Ground  
Not Connected  
No pin  
9
Power  
Out  
10  
41  
       
Intel Desktop Board DG41MJ Product Guide  
Connecting to the Back Panel Audio  
Connectors  
After the audio driver has been installed, the multi-channel audio feature can be  
enabled. Figure 19 shows the back panel audio connectors. The default connector  
assignments are shown in the figure. Refer to Table 3 on page 15 for audio connector  
retasking information.  
Item  
A
Description  
Line In  
B
Line Out  
Mic In  
C
Figure 19. Back Panel Audio Connectors  
NOTE  
The back panel line out connector is designed to power either headphones or amplified  
speakers only. Poor audio quality may occur if passive (non-amplified) speakers are  
connected to this output.  
42  
   
Installing and Replacing Desktop Board Components  
Connecting Chassis Fan and Power Supply  
Cables  
Connecting a Chassis Fan Cable  
Connect your chassis fan cable to the 3-pin chassis fan header on the Desktop Board.  
Figure 20 shows the location of the chassis fan header.  
Figure 20. Location of the Chassis Fan Header  
43  
     
Intel Desktop Board DG41MJ Product Guide  
Connecting Supply Power Cables  
CAUTION  
Failure to use an appropriate power supply and/or not connecting the 12 V (2 x 2 pin)  
power connector to the Desktop Board may result in damage to the board or the  
system may not function properly.  
The 2 x 12 pin main power connector on the Desktop Board is backwards compatible  
with ATX12V power supplies with 2 x 10 connectors. Figure 21 shows the location of  
the Desktop Board power connectors.  
Figure 21. Connecting Power Supply Cables  
1. Observe the precautions in "Before You Begin" on page 23.  
2. Connect the main power supply cable to the 2 x 12 pin connector.  
3. Connect the 12 V processor core voltage power supply cable to the 2 x 2 pin  
connector.  
44  
   
Installing and Replacing Desktop Board Components  
Setting the BIOS Configuration Jumper  
NOTE  
Always turn off the power and unplug the power cord from the computer before  
moving the jumper. Moving the jumper with the power on may result in unreliable  
computer operation.  
Figure 22 shows the location of the Desktop Board’s BIOS configuration jumper block.  
Figure 22. Location of the BIOS Configuration Jumper Block  
The three-pin BIOS jumper block enables all board configurations to be done in the  
BIOS Setup program. Table 12 shows the jumper settings for the BIOS Setup  
program modes.  
45  
   
Intel Desktop Board DG41MJ Product Guide  
Table 12.Jumper Settings for the BIOS Setup Program Modes  
Jumper Setting  
Mode  
Description  
Normal (default) (1-2)  
The BIOS uses the current configuration and  
passwords for booting.  
Configure (2-3)  
Recovery (None)  
After the Power-On Self-Test (POST) runs, the  
BIOS displays the Maintenance Menu. Use this  
menu to clear passwords.  
The BIOS recovers data in the event of a failed  
BIOS update.  
Clearing Passwords  
This procedure assumes that the board is installed in the computer and the  
configuration jumper block is set to normal mode.  
1. Observe the precautions in "Before You Begin" on page 23.  
2. Turn off all peripheral devices connected to the computer. Turn off the computer.  
Disconnect the computer’s power cord from the AC power source (wall outlet or  
power adapter).  
3. Remove the computer cover.  
4. Find the configuration jumper block (see Figure 22).  
5. Place the jumper on pins 2-3 as shown below.  
6. Replace the cover, plug in the computer, turn on the computer, and allow it to  
boot.  
7. The computer starts the Setup program. Setup displays the Maintenance menu.  
8. Use the arrow keys to select Clear Passwords. Press <Enter> and Setup displays a  
pop-up screen requesting that you confirm clearing the password. Select Yes and  
press <Enter>. Setup displays the maintenance menu again.  
9. Press <F10> to save the current values and exit Setup.  
10.Turn off the computer. Disconnect the computer’s power cord from the AC power  
source.  
11.Remove the computer cover.  
46  
   
Installing and Replacing Desktop Board Components  
12.To restore normal operation, place the jumper on pins 1-2 as shown below.  
13.Replace the cover, plug in the computer, and turn on the computer.  
Replacing the Battery  
A coin-cell battery (CR2032) powers the real-time clock and CMOS memory. When  
the computer is not plugged into a wall socket, the battery has an estimated life of  
three years. When the computer is plugged in, the standby current from the power  
supply extends the life of the battery. The clock is accurate to ± 13 minutes/year at  
25 ºC with 3.3 VSB applied.  
When the voltage drops below a certain level, the BIOS Setup program settings stored  
in CMOS RAM (for example, the date and time) might not be accurate. Replace the  
battery with an equivalent one. Figure 23 on page 51 shows the location of the  
battery.  
CAUTION  
Risk of explosion if the battery is replaced with an incorrect type. Batteries should be  
recycled where possible. Disposal of used batteries must be in accordance with local  
environmental regulations.  
PRÉCAUTION  
Risque d'explosion si la pile usagée est remplacée par une pile de type incorrect. Les  
piles usagées doivent être recyclées dans la mesure du possible. La mise au rebut des  
piles usagées doit respecter les réglementations locales en vigueur en matière de  
protection de l'environnement.  
FORHOLDSREGEL  
Eksplosionsfare, hvis batteriet erstattes med et batteri af en forkert type. Batterier  
bør om muligt genbruges. Bortskaffelse af brugte batterier bør foregå i  
overensstemmelse med gældende miljølovgivning.  
OBS!  
Det kan oppstå eksplosjonsfare hvis batteriet skiftes ut med feil type. Brukte batterier  
bør kastes i henhold til gjeldende miljølovgivning.  
VIKTIGT!  
Risk för explosion om batteriet ersätts med felaktig batterityp. Batterier ska kasseras  
enligt de lokala miljövårdsbestämmelserna.  
47  
 
Intel Desktop Board DG41MJ Product Guide  
VARO  
Räjähdysvaara, jos pariston tyyppi on väärä. Paristot on kierrätettävä, jos se on  
mahdollista. Käytetyt paristot on hävitettävä paikallisten ympäristömääräysten  
mukaisesti.  
VORSICHT  
Bei falschem Einsetzen einer neuen Batterie besteht Explosionsgefahr. Die Batterie  
darf nur durch denselben oder einen entsprechenden, vom Hersteller empfohlenen  
Batterietyp ersetzt werden. Entsorgen Sie verbrauchte Batterien den Anweisungen  
des Herstellers entsprechend.  
AVVERTIMENTO  
Esiste il pericolo di un esplosione se la pila non viene sostituita in modo corretto.  
Utilizzare solo pile uguali o di tipo equivalente a quelle consigliate dal produttore. Per  
disfarsi delle pile usate, seguire le istruzioni del produttore.  
PRECAUCIÓN  
Existe peligro de explosión si la pila no se cambia de forma adecuada. Utilice  
solamente pilas iguales o del mismo tipo que las recomendadas por el fabricante del  
equipo. Para deshacerse de las pilas usadas, siga igualmente las instrucciones del  
fabricante.  
WAARSCHUWING  
Er bestaat ontploffingsgevaar als de batterij wordt vervangen door een onjuist type  
batterij. Batterijen moeten zoveel mogelijk worden gerecycled. Houd u bij het  
weggooien van gebruikte batterijen aan de plaatselijke milieuwetgeving.  
ATENÇÃO  
Haverá risco de explosão se a bateria for substituída por um tipo de bateria incorreto.  
As baterias devem ser recicladas nos locais apropriados. A eliminação de baterias  
usadas deve ser feita de acordo com as regulamentações ambientais da região.  
AŚCIAROŽZNAŚĆ  
Існуе рызыка выбуху, калі заменены акумулятар неправільнага тыпу.  
Акумулятары павінны, па магчымасці, перепрацоўвацца. Пазбаўляцца ад старых  
акумулятараў патрэбна згодна з мясцовым заканадаўствам па экалогіі.  
UPOZORNÌNÍ  
V případě výměny baterie za nesprávný druh může dojít k výbuchu. Je-li to možné,  
baterie by měly být recyklovány. Baterie je třeba zlikvidovat v souladu s místními  
předpisy o životním prostředí.  
48  
Installing and Replacing Desktop Board Components  
Προσοχή  
Υπάρχει κίνδυνος για έκρηξη σε περίπτωση που η μπαταρία αντικατασταθεί από μία  
λανθασμένου τύπου. Οι μπαταρίες θα πρέπει να ανακυκλώνονται όταν κάτι τέτοιο είναι  
δυνατό. Η απόρριψη των χρησιμοποιημένων μπαταριών πρέπει να γίνεται σύμφωνα με  
τους κατά τόπο περιβαλλοντικούς κανονισμούς.  
VIGYÁZAT  
Ha a telepet nem a megfelelő típusú telepre cseréli, az felrobbanhat. A telepeket  
lehetőség szerint újra kell hasznosítani. A használt telepeket a helyi környezetvédelmi  
előírásoknak megfelelően kell kiselejtezni.  
AWAS  
Risiko letupan wujud jika bateri digantikan dengan jenis yang tidak betul. Bateri  
sepatutnya dikitar semula jika boleh. Pelupusan bateri terpakai mestilah mematuhi  
peraturan alam sekitar tempatan.  
OSTRZEŻENIE  
Istnieje niebezpieczeństwo wybuchu w przypadku zastosowania niewłaściwego typu  
baterii. Zużyte baterie należy w miarę możliwości utylizować zgodnie z odpowiednimi  
przepisami ochrony środowiska.  
PRECAUŢIE  
Risc de explozie, dacă bateria este înlocuită cu un tip de baterie necorespunzător.  
Bateriile trebuie reciclate, dacă este posibil. Depozitarea bateriilor uzate trebuie să  
respecte reglementările locale privind protecţia mediului.  
ВНИМАНИЕ  
При использовании батареи несоответствующего типа существует риск ее взрыва.  
Батареи должны быть утилизированы по возможности. Утилизация батарей должна  
проводится по правилам, соответствующим местным требованиям.  
UPOZORNENIE  
Ak batériu vymeníte za nesprávny typ, hrozí nebezpečenstvo jej výbuchu. Batérie by  
sa mali podľa možnosti vždy recyklovať. Likvidácia použitých batérií sa musí vykonávať  
v súlade s miestnymi predpismi na ochranu životného prostredia.  
49  
Intel Desktop Board DG41MJ Product Guide  
POZOR  
Zamenjava baterije z baterijo drugačnega tipa lahko povzroči eksplozijo.  
Če je mogoče, baterije reciklirajte. Rabljene baterije zavrzite v skladu z lokalnimi  
okoljevarstvenimi predpisi.  
.
UYARI  
Yanlış türde pil takıldığında patlama riski vardır. Piller mümkün olduğunda geri  
dönüştürülmelidir. Kullanılmış piller, yerel çevre yasalarına uygun olarak atılmalıdır.  
OСТОРОГА  
Використовуйте батареї правильного типу, інакше існуватиме ризик вибуху.  
Якщо можливо, використані батареї слід утилізувати. Утилізація використаних  
батарей має бути виконана згідно місцевих норм, що регулюють охорону довкілля.  
50  
Installing and Replacing Desktop Board Components  
To replace the battery, follow these steps:  
1. Observe the precautions in "Before You Begin" (see page 23).  
2. Turn off all peripheral devices connected to the computer. Disconnect the  
computer’s power cord from the AC power source (wall outlet or power adapter).  
3. Remove the computer cover.  
4. Locate the battery on the board (see Figure 23).  
5. Push the battery retention clip aside and remove the battery from the connector as  
shown in Figure 23. Note the orientation of the “+” and “-” on the battery.  
6. Install the new battery in the connector, making sure to orient the “+” and “-”  
correctly.  
7. Replace the computer cover.  
Figure 23. Removing the Battery  
51  
 
Intel Desktop Board DG41MJ Product Guide  
52  
3 Updating the BIOS  
The BIOS Setup program can be used to view and change the BIOS settings for the  
computer. You can access the BIOS Setup program by pressing the <F2> key after  
the Power-On Self-Test (POST) memory test begins and before the operating system  
boot begins.  
This chapter tells you how to update the BIOS by either using the Intel Express BIOS  
Update utility or the Iflash Memory Update utility, and how to recover the BIOS if an  
update fails.  
Updating the BIOS with the Intel® Express  
BIOS Update Utility  
With the Intel Express BIOS Update utility you can update the system BIOS while in  
the Microsoft Windows environment. The BIOS file is included in an automated update  
utility that combines the functionality of the Intel® Flash Memory Update Utility and  
the ease of use of Windows-based installation wizards.  
To update the BIOS with the Intel Express BIOS Update utility:  
1. Go to the Intel World Wide Web site at  
2. Navigate to the Intel Desktop Board DG41MJ page, click “Latest BIOS,” and select  
the Express BIOS Update utility file.  
3. Download the file to your hard drive. (You can also save this file to a removable  
USB device. This is useful if you are updating the BIOS for multiple identical  
systems.)  
4. Close all other applications. This step is required. Your system will be rebooted at  
the last Express BIOS Update window.  
5. Double-click the executable file from the location on your hard drive where it was  
saved. This runs the update program.  
6. Follow the instructions provided in the dialog boxes to complete the BIOS update.  
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Intel Desktop Board DG41MJ Product Guide  
Updating the BIOS with the ISO Image BIOS  
Update File or the Iflash Memory Update  
Utility  
You can use the information in this section to update the BIOS using either the Iflash  
Memory Update Utility or the ISO Image BIOS update file.  
Obtaining the BIOS Update File  
You can update to a new version of the BIOS by using the ISO Image BIOS update file  
(recommended), or Iflash BIOS update file.  
The ISO Image BIOS update file is a standardized image of a bootable CD-ROM that  
can be used to create a bootable CD that will update the BIOS.  
The Iflash BIOS update file is a compressed file that contains the files you need to  
update the BIOS. The Iflash BIOS update file contains:  
New BIOS file  
Intel® Integrator Toolkit Configuration File (optional)  
Intel Flash Memory Update Utility  
You can obtain either of these files through your computer supplier or by navigating to  
the Intel Desktop Board DG41MJ page on the Intel World Wide Web site at  
Navigate to the Intel Desktop Board DG41MJ page, click “Latest BIOS,” and select the  
ISO Image BIOS Update or Iflash BIOS Update utility file.  
Updating the BIOS with the ISO Image BIOS Update  
File  
The ISO Image BIOS update allows for the update of an Intel® Desktop Board BIOS to  
the latest production release regardless of the operating system installed on the  
computer's hard drive and without the need to remove the BIOS configuration jumper.  
It requires a blank CD-R, a read/writeable CD drive, and software capable of  
uncompressing and writing the ISO image file to CD.  
The image uses ISOLINUX* bootloader and automatically launches a script to upgrade  
the BIOS via the Iflash utility.  
CAUTION  
Do not interrupt the process or the system may not function properly.  
54  
     
Updating the BIOS  
Follow these instructions to upgrade the BIOS using the ISO Image BIOS file:  
1. Download the ISO Image BIOS file.  
2. Using software capable of uncompressing and writing an ISO image file to CD, burn  
the data to a blank CD.  
NOTE  
Copying the ISO Image BIOS file to CD will not work. The completed CD should  
contain multiple files and a directory.  
3. Insert the CD that was created in the CD-ROM drive of the computer to be  
upgraded and boot the system.  
4. When the "Press ENTER to continue booting from CD-ROM" prompt appears, press  
the Enter key. The system will boot from the hard drive if no key is pressed within  
15 seconds.  
5. At the "Welcome to the Intel Desktop Board BIOS Upgrade CD-ROM" page, press  
any key to confirm the BIOS upgrade operation.  
6. Wait for the BIOS upgrade process to complete.  
CAUTION  
DO NOT POWER DOWN YOUR COMPUTER before the update is complete. The update  
may take up to 5 minutes.  
Updating the BIOS with the Iflash Memory Update  
Utility  
With the Iflash Memory update utility you can update the system BIOS from a  
bootable CD-ROM, bootable USB flash drive, or other bootable USB media. The utility  
available on the Intel World Wide Web site provides a simple method for creating a  
bootable CD-ROM that will automatically update your BIOS. The Iflash BIOS update  
files can also be extracted locally to your hard drive and copied to a bootable USB  
flash drive or other bootable USB media.  
The Iflash Memory update utility allows you to:  
Update the BIOS in flash memory  
Update the language section of the BIOS  
NOTE  
Review the instructions distributed with the update utility before attempting a BIOS  
update.  
CAUTION  
Do not interrupt the process or the system may not function properly.  
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Intel Desktop Board DG41MJ Product Guide  
1. Uncompress the BIOS update file and copy the .BIO file, IFLASH.EXE, and .ITK file  
(optional) to a bootable USB flash drive or other bootable USB media.  
2. Configure the BIOS or use the F10 option during POST to boot to the USB device.  
3. Manually run the IFLASH.EXE file from the USB device and manually update the  
BIOS.  
Recovering the BIOS  
It is unlikely that anything will interrupt the BIOS update; however, if an interruption  
occurs, the BIOS could be damaged. Due to BIOS size and recovery requirements, a  
CD-R with the .BIO file in the root directory will be required.  
Related Links  
For more information about updating the Intel Desktop Board BIOS or recovering from  
a BIOS update failure, go to  
56  
 
A Error Messages and Indicators  
Intel Desktop Board DG41MJ reports POST errors in two ways:  
By sounding a beep code  
By displaying an error message on the monitor  
BIOS Beep Codes  
The BIOS also issues a beep code (one long tone followed by two short tones) during  
POST if the video configuration fails (a faulty video card or no card installed) or if an  
external ROM module does not properly checksum to zero. Table 13 lists the BIOS  
codes.  
Table 13.Beep Codes  
Beep  
3
Description  
No memory  
Siren  
Processor overheat (on reboot)  
BIOS Error Messages  
When a recoverable error occurs during the POST, the BIOS displays an error message  
describing the problem. Table 14 gives an explanation of the BIOS error messages.  
Table 14.BIOS Error Messages  
Error Message  
Explanation  
PROCESSOR_THERMAL_TRIP_ERROR  
Processor was previously shutdown due to a thermal event  
(overheating).  
MULTI_BIT_ECC_ERROR  
SINGLE_BIT_ECC_ERROR  
CMOS_BATTERY_ERROR  
CMOS_CHECKSUM_ERROR  
CMOS_TIMER_ERROR  
The firmware has detected that a Multi-Bit ECC Error occurred.  
The firmware has detected that a Single-Bit ECC Error occurred.  
The firmware has detected that a CMOS battery failure occurred.  
The firmware has detected that a CMOS Checksum Error occurred.  
The firmware has detected that the system date/time has not  
been set.  
MEMORY_SIZE_DECREASE_ERROR  
The firmware has detected that the system memory has  
decreased.  
INTRUDER_DETECTION_ERROR  
SPD_TOLER_ERROR  
The system chassis was opened.  
SERIAL PRESENCE DETECT (SPD) device data missing or  
inconclusive. Properly programmed SPD device data is required  
for reliable operation.  
MEM_OPTIMAL_ERROR  
The installed amount of memory in Channel A is not equal to the  
amount of memory in Channel B. Maximum memory performance  
is achieved with equal amounts of memory installed in each  
channel.  
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Intel Desktop Board DG41MJ Product Guide  
58  
B Regulatory Compliance  
This appendix contains the following regulatory compliance information for Intel  
Desktop Board DG41MJ:  
Safety standards  
European Union Declaration of Conformity statement  
Product Ecology statements  
Electromagnetic Compatibility (EMC) regulations  
Product certifications  
Safety Standards  
Intel Desktop Board DG41MJ complies with the safety standards stated in Table 15  
when correctly installed in a compatible host system.  
Table 15.Safety Standards  
Regulation  
Title  
UL 60950-1, First Edition  
Information Technology Equipment – Safety - Part 1: General  
Requirements (USA and Canada)  
EN 60950-1:2006, Second  
Edition  
Information Technology Equipment – Safety - Part 1: General  
Requirements (European Union)  
IEC 60950-1:2005, Second  
Edition  
Information Technology Equipment – Safety - Part 1: General  
Requirements (International)  
Place Battery Marking  
There is insufficient space on this Desktop Board to provide instructions for replacing  
and disposing of the Lithium ion coin cell battery. For system safety certification, the  
statement below or an equivalent statement is required to be permanently and legibly  
marked on the chassis near the battery.  
CAUTION  
Risk of explosion if the battery is replaced with an incorrect type. Batteries should be  
recycled where possible. Disposal of used batteries must be in accordance with local  
environmental regulations.  
Related Links  
For information about replacing the battery, go to page 47.  
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Intel Desktop Board DG41MJ Product Guide  
European Union Declaration of Conformity  
Statement  
We, Intel Corporation, declare under our sole responsibility that the product  
Intel® Desktop Board DG41MJ is in conformity with all applicable essential  
requirements necessary for CE marking, following the provisions of the European  
Council Directives 2004/108/EC (EMC Directive) and 2006/95/EC (Low Voltage  
Directive).  
The product is properly CE marked demonstrating this conformity and is for  
distribution within all member states of the EU with no restrictions.  
This product follows the provisions of the European Directives 2004/108/EC and  
2006/95/EC.  
Čeština Tento výrobek odpovídá požadavkům evropských směrnic 2004/108/EC a  
2006/95/EC.  
Dansk Dette produkt er i overensstemmelse med det europæiske direktiv  
2004/108/EC & 2006/95/EC.  
Dutch Dit product is in navolging van de bepalingen van Europees Directief  
2004/108/EC & 2006/95/EC.  
Eesti Antud toode vastab Euroopa direktiivides 2004/108/EC ja 2006/95/EC  
kehtestatud nõuetele.  
Suomi Tämä tuote noudattaa EU-direktiivin 2004/108/EC & 2006/95/EC määräyksiä.  
Français Ce produit est conforme aux exigences de la Directive Européenne  
2004/108/EC & 2006/95/EC.  
Deutsch Dieses Produkt entspricht den Bestimmungen der Europäischen Richtlinie  
2004/108/EC & 2006/95/EC.  
Ελληνικά Το παρόν προϊόν ακολουθεί τις διατάξεις των Ευρωπαϊκών Οδηγιών  
2004/108/EC και 2006/95/EC.  
Magyar E termék megfelel a 2004/108/EC és 2006/95/EC Európai Irányelv  
előírásainak.  
Icelandic Þessi vara stenst reglugerð Evrópska Efnahags Bandalagsins númer  
2004/108/EC & 2006/95/EC.  
Italiano Questo prodotto è conforme alla Direttiva Europea 2004/108/EC &  
2006/95/EC.  
Latviešu Šis produkts atbilst Eiropas Direktīvu 2004/108/EC un 2006/95/EC  
noteikumiem.  
60  
 
Regulatory Compliance  
Lietuvių Šis produktas atitinka Europos direktyvų 2004/108/EC ir 2006/95/EC  
nuostatas.  
Malti Dan il-prodott hu konformi mal-provvedimenti tad-Direttivi Ewropej  
2004/108/EC u 2006/95/EC.  
Norsk Dette produktet er i henhold til bestemmelsene i det europeiske direktivet  
2004/108/EC & 2006/95/EC.  
Polski Niniejszy produkt jest zgodny z postanowieniami Dyrektyw Unii Europejskiej  
2004/108/EC i 2006/95/EC.  
Portuguese Este produto cumpre com as normas da Diretiva Européia 2004/108/EC  
& 2006/95/EC.  
Español Este producto cumple con las normas del Directivo Europeo 2004/108/EC &  
2006/95/EC.  
Slovensky Tento produkt je v súlade s ustanoveniami európskych direktív  
2004/108/EC a 2006/95/EC.  
Slovenščina Izdelek je skladen z določbami evropskih direktiv 2004/108/EC in  
2006/95/EC.  
Svenska Denna produkt har tillverkats i enlighet med EG-direktiv 2004/108/EC &  
2006/95/EC.  
Türkçe Bu ürün, Avrupa Birliği’nin 2004/108/EC ve 2006/95/EC yönergelerine uyar.  
Product Ecology Statements  
The following information is provided to address worldwide product ecology concerns  
and regulations.  
Recycling Considerations  
As part of its commitment to environmental responsibility, Intel has implemented the  
Intel® Product Recycling Program to allow retail consumers of Intel’s branded products  
to return used products to selected locations for proper recycling.  
for the details of this program, including the scope of covered products, available  
locations, shipping instructions, terms and conditions, etc.  
中文  
作为其对环境责任之承诺的部分,英特尔已实施 Intel Product Recycling Program  
(英特尔产品回收计划),以允许英特尔品牌产品的零售消费者将使用过的产品退还至指定地点作恰  
当的重复使用处理。  
了解此计划的详情,包括涉及产品之范围、回收地点、运送指导、条款和条件等。  
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Intel Desktop Board DG41MJ Product Guide  
Deutsch  
Als Teil von Intels Engagement für den Umweltschutz hat das Unternehmen das Intel  
Produkt-Recyclingprogramm implementiert, das Einzelhandelskunden von Intel  
Markenprodukten ermöglicht, gebrauchte Produkte an ausgewählte Standorte für  
ordnungsgemäßes Recycling zurückzugeben.  
Details zu diesem Programm, einschließlich der darin eingeschlossenen Produkte,  
verfügbaren Standorte, Versandanweisungen, Bedingungen usw., finden Sie auf der  
Español  
Como parte de su compromiso de responsabilidad medioambiental, Intel ha  
implantado el programa de reciclaje de productos Intel, que permite que los  
consumidores al detalle de los productos Intel devuelvan los productos usados en los  
lugares seleccionados para su correspondiente reciclado.  
para ver los detalles del programa, que incluye los productos que abarca, los lugares  
disponibles, instrucciones de envío, términos y condiciones, etc.  
Français  
Dans le cadre de son engagement pour la protection de l'environnement, Intel a mis  
en œuvre le programme Intel Product Recycling Program (Programme de recyclage  
des produits Intel) pour permettre aux consommateurs de produits Intel de recycler  
les produits usés en les retournant à des adresses spécifiées.  
savoir plus sur ce programme, à savoir les produits concernés, les adresses  
disponibles, les instructions d'expédition, les conditions générales, etc.  
日本語  
インテルでは、環境保護活動の一環として、使い終えたインテル  
ブランド製品を指定の場所へ返送していただき、リサイクルを適切に行えるよう、インテル製品リサイクル  
プログラムを発足させました。  
対象製品、返送先、返送方法、ご利用規約など、このプログラムの詳細情報は、http://www.intel.com/in  
tel/other/ehs/product_ecology (英語)をご覧ください。  
Malay  
Sebagai sebahagian daripada komitmennya terhadap tanggungjawab persekitaran,  
Intel telah melaksanakan Program Kitar Semula Produk untuk membenarkan  
pengguna-pengguna runcit produk jenama Intel memulangkan produk terguna ke  
lokasi-lokasi terpilih untuk dikitarkan semula dengan betul.  
butir-butir program ini, termasuklah skop produk yang dirangkumi, lokasi-lokasi  
tersedia, arahan penghantaran, terma & syarat, dsb.  
62  
Regulatory Compliance  
Portuguese  
Como parte deste compromisso com o respeito ao ambiente, a Intel implementou o  
Programa de Reciclagem de Produtos para que os consumidores finais possam enviar  
produtos Intel usados para locais selecionados, onde esses produtos são reciclados de  
maneira adequada.  
Consulte o site http://www.intel.com/intel/other/ehs/product_ecology (em Inglês) para  
obter os detalhes sobre este programa, inclusive o escopo dos produtos cobertos, os  
locais disponíveis, as instruções de envio, os termos e condições, etc.  
Russian  
В качестве части своих обязательств к окружающей среде, в Intel создана  
программа утилизации продукции Intel (Product Recycling Program) для  
предоставления конечным пользователям марок продукции Intel возможности  
возврата используемой продукции в специализированные пункты для должной  
утилизации.  
Пожалуйста, обратитесь на веб-сайт  
http://www.intel.com/intel/other/ehs/product_ecology за информацией об этой  
программе, принимаемых продуктах, местах приема, инструкциях об отправке,  
положениях и условиях и т.д.  
Türkçe  
Intel, çevre sorumluluğuna bağımlılığının bir parçası olarak, perakende tüketicilerin  
Intel markalı kullanılmış ürünlerini belirlenmiş merkezlere iade edip uygun şekilde geri  
dönüştürmesini amaçlayan Intel Ürünleri Geri Dönüşüm Programı’nı uygulamaya  
koymuştur.  
Bu programın ürün kapsamı, ürün iade merkezleri, nakliye talimatları, kayıtlar ve  
şartlar v.s dahil bütün ayrıntılarını ögrenmek için lütfen  
Lead-Free Desktop Board  
This Desktop Board is a European Union Restriction of Hazardous Substances (EU  
RoHS Directive 2002/95/EC) compliant product. EU RoHS restricts the use of six  
materials. One of the six restricted materials is lead.  
Intel Desktop Board DG41MJ is lead-free although certain discrete components used  
on the board contain a small amount of lead which is necessary for component  
performance and/or reliability. This Desktop Board is referred to as “Lead-free second  
level interconnect.” The board substrate and the solder connections from the board to  
the components (second-level connections) are all lead-free.  
China bans the same substances and has the same limits as EU RoHS; however it  
requires different product marking and controlled substance information. The required  
mark shows the Environmental Friendly Usage Period (EFUP). The EFUP is defined as  
the number of years for which controlled listed substances will not leak or chemically  
deteriorate while in the product.  
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Intel Desktop Board DG41MJ Product Guide  
Table 16 shows the lead-free board markings as they appear on the board and  
accompanying collateral.  
Table 16.Lead-Free Board Markings  
Description  
Mark  
Lead-Free 2nd Level  
Interconnect: This symbol  
is used to identify electrical  
and electronic assemblies and  
components in which the lead  
(Pb) concentration level in the  
Intel Desktop Board substrate  
and the solder connections  
from the board to the  
or  
components (second-level  
interconnect) is not greater  
than 0.1% by weight (1000  
ppm).  
or  
China  
RoHS/Environmentally  
Friendly Use Period Logo:  
This is an example of the  
symbol used on Intel Desktop  
Boards and associated  
collateral. The color of the  
mark may vary depending  
upon the application. The  
Environmental Friendly Usage  
Period (EFUP) for Intel  
Desktop Boards has been  
determined to be 10 years.  
64  
 
Regulatory Compliance  
EMC Regulations  
Intel Desktop Board DG41MJ complies with the EMC regulations stated in Table 17  
when correctly installed in a compatible host system.  
Table 17.EMC Regulations  
Regulation  
Title  
FCC 47 CFR Part 15,  
Subpart B  
Title 47 of the Code of Federal Regulations, Part 15, Subpart B,  
Radio Frequency Devices. (USA)  
ICES-003 Issue 4  
(Class B)  
Interference-Causing Equipment Standard, Digital Apparatus.  
(Canada)  
EN55022:2006  
(Class B)  
Limits and methods of measurement of Radio Interference  
Characteristics of Information Technology Equipment. (European  
Union)  
EN55024:1998  
Information Technology Equipment – Immunity Characteristics  
Limits and methods of measurement. (European Union)  
EN55022:2006  
(Class B)  
Australian Communications Authority, Standard for  
Electromagnetic Compatibility. (Australia and New Zealand)  
CISPR 22:2005  
+A1:2005 +A2:2006  
(Class B)  
Limits and methods of measurement of Radio Disturbance  
Characteristics of Information Technology Equipment.  
(International)  
CISPR 24:1997  
+A1:2001 +A2:2002  
Information Technology Equipment – Immunity Characteristics –  
Limits and Methods of Measurement. (International)  
VCCI V-3/2007.04,  
V-4/2007.04, Class B  
Voluntary Control for Interference by Information Technology  
Equipment (Japan)  
Japanese Kanji statement translation: This is a Class B product based on the standard  
of the Voluntary Control Council for Interference from Information Technology  
Equipment (VCCI). If this is used near a radio or television receiver in a domestic  
environment, it may cause radio interference. Install and use the equipment  
according to the instruction manual.  
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Intel Desktop Board DG41MJ Product Guide  
Korean Class B statement translation: This is household equipment that is certified to  
comply with EMC requirements. You may use this equipment in residential  
environments and other non-residential environments.  
Ensure Electromagnetic Compatibility (EMC)  
Compliance  
Before computer integration, make sure that the power supply and other modules or  
peripherals, as applicable, have passed Class B EMC testing and are marked  
accordingly.  
Pay close attention to the following when reading the installation instructions for the  
host chassis, power supply, and other modules:  
Product certifications or lack of certifications  
External I/O cable shielding and filtering  
Mounting, grounding, and bonding requirements  
Keying connectors when mating the wrong connectors could be hazardous  
If the power supply and other modules or peripherals, as applicable, are not Class B  
EMC compliant before integration, then EMC testing may be required on a  
representative sample of the newly completed computer.  
66  
 
Regulatory Compliance  
Product Certifications  
Board-Level Certification Markings  
Intel Desktop Board DG41MJ has the product certification markings shown in Table 18.  
Table 18.Product Certification Markings  
Description  
Mark  
UL joint US/Canada Recognized Component mark. Includes adjacent  
UL file number for Intel Desktop Boards: E210882.  
FCC Declaration of Conformity logo mark for Class B equipment.  
Includes Intel name and DG41MJ model designation.  
CE mark. Declaring compliance to European Union (EU) EMC  
directive and Low Voltage directive.  
Australian Communications Authority (ACA) C-tick mark. Includes  
adjacent Intel supplier code number, N-232.  
Japan VCCI (Voluntary Control Council for Interference) mark.  
KCC (Korean Communications Commission) EMC certification mark.  
Includes adjacent KCC certification number: CPU-DG41MJ (B).  
Taiwan BSMI (Bureau of Standards, Metrology, and Inspections)  
mark. Includes adjacent Intel company number, D33025.  
Printed wiring board manufacturer’s recognition mark. Consists of a  
unique UL recognized manufacturer’s logo, along with a flammability  
rating (solder side).  
V-0  
67  
     
Intel Desktop Board DG41MJ Product Guide  
Chassis and Component Certifications  
Ensure that the chassis and certain components; such as the power supply, peripheral  
drives, wiring, and cables; are components certified for the country or market where  
used. Agency certification marks on the product are proof of certification. Typical  
product certifications include:  
In Europe  
The CE marking signifies compliance with all applicable European requirements. If the  
chassis and other components are not properly CE marked, a supplier’s Declaration of  
Conformity statement to the European EMC directive and Low Voltage directive (as  
applicable), should be obtained. Additionally, other directives, such as the Radio and  
Telecommunications Terminal Equipment (R&TTE) directive may also apply depending  
on product features.  
In the United States  
A certification mark by a Nationally Recognized Testing Laboratory (NRTL) such as UL,  
CSA, or ETL signifies compliance with safety requirements. Wiring and cables must  
also be UL listed or recognized and suitable for the intended use. The FCC Class B  
logo for home or office use signifies compliance with electromagnetic interference  
(EMI) requirements.  
In Canada  
A nationally recognized certification mark such as CSA or cUL signifies compliance with  
safety requirements. The Industry Canada statement at the front of this product guide  
demonstrates compliance with Canadian EMC regulations.  
68  
 

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