Intel BLKDG41CN Configuration guide

Intel® Desktop Board
DG41CN
Technical Product Specification
January 2010
Order Number: E81345-001US
The Intel®Desktop Board DG41CN may contain design defects or errors known as errata that may cause the product to deviate from published
specifications. Current characterized errata are documented in the Intel Desktop Board DG41CN Specification Update.

Revision History
Revision Revision History Date
-001 Intel®Desktop Board DG41CN Technical Product Specification January 2010
This product specification applies to only the standard Intel®Desktop Board DG41CN with BIOS
identifier CNG4110H.86A
Changes to this specification will be published in the Intel Desktop Board DG41CN Specification
Update before being incorporated into a revision of this document.
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iii
Preface
This Technical Product Specification (TPS) specifies the board layout, components,
connectors, and power and environmental requirements for Intel®Desktop Board
DG41CN. It describes the standard product and available manufacturing options.
Intended Audience
The TPS is intended to provide detailed, technical information about the Intel Desktop
Board DG41CN and its components to the vendors, system integrators, and other
engineers and technicians who need this level of information. It is specifically not
intended for general audiences.
What This Document Contains
Chapter Description
1 A description of the hardware used on the board
2 Technical reference for the board
3 Regulatory compliance and battery disposal information
Typographical Conventions
This section contains information about the conventions used in this specification. Not
all of these symbols and abbreviations appear in all specifications of this type.
Notes, Cautions, and Warnings
NOTE
Notes call attention to important information.
#
INTEGRATOR’S NOTES
Integrator’s notes are used to call attention to information that may be useful to
system integrators.
CAUTION
Cautions are included to help you avoid damaging hardware or losing data.

Intel Desktop Board DG41CN Technical Product Specification
iv
Other Common Notation
# Used after a signal name to identify an active-low signal (such as USBP0#)
GB Gigabyte (1,073,741,824 bytes)
GB/s Gigabytes per second
Gbit Gigabit (1, 073,741,824 bits)
KB Kilobyte (1024 bytes)
Kbit Kilobit (1024 bits)
kbits/s 1000 bits per second
MB Megabyte (1,048,576 bytes)
MB/s Megabytes per second
Mbit Megabit (1,048,576 bits)
Mbit/s Megabits per second
xxh An address or data value ending with a lowercase h indicates a hexadecimal value.
x.x V Volts. Voltages are DC unless otherwise specified.
* This symbol is used to indicate third-party brands and names that are the property of their
respective owners.

v
Contents
1Product Description
1.1 Overview.......................................................................................... 7
1.1.1 Feature Summary .................................................................. 7
1.1.2 Board Layout ......................................................................... 9
1.2 Online Support/Information .............................................................. 11
2Technical Reference
2.1 Connectors, Headers, and Jumpers .................................................... 13
2.1.1 Component-side Headers and Connectors ................................ 13
2.1.2 Jumpers.............................................................................. 17
2.1.3 Back Panel Connectors .......................................................... 19
2.2 Mechanical Considerations ................................................................ 20
2.2.1 Form Factor......................................................................... 20
2.3 Electrical Considerations................................................................... 21
2.3.1 Power Supply Considerations ................................................. 21
2.4 Thermal Considerations.................................................................... 21
2.5 Reliability ....................................................................................... 22
2.6 ACPI Wake-up Devices and Events..................................................... 22
3Regulatory Compliance and Battery Disposal Information
3.1 Regulatory Compliance..................................................................... 23
3.1.1 Safety Standards.................................................................. 23
3.1.2 European Union Declaration of Conformity Statement................ 24
3.1.3 Product Ecology Statements................................................... 25
3.1.4 EMC Regulations .................................................................. 27
3.1.5 Product Certification Markings (Board Level)............................. 30
3.2 Battery Disposal Information............................................................. 31
Figures
1. Major Board Components.................................................................... 9
2. Component-side Connectors and Headers ........................................... 13
3. Jumpers......................................................................................... 17
4. Back Panel Connectors ..................................................................... 19
5. Board Dimensions ........................................................................... 20

Intel Desktop Board DG41CN Technical Product Specification
vi
Tables
1. Feature Summary.............................................................................. 7
2. Board Components Shown in Figure 1 ................................................ 10
3. Connectors and Headers Shown in Figure 2......................................... 14
4. Serial ATA Connectors...................................................................... 14
5. Serial Port B Connector .................................................................... 15
6. Chassis Fan Header ......................................................................... 15
7. Processor Fan Header ...................................................................... 15
8. Front Panel Audio Header ................................................................. 15
9. S/PDIF Out Header .......................................................................... 15
10. Front Panel Header .......................................................................... 16
11. Front Panel USB1/USB2 Header......................................................... 16
12. Processor Core Power Connector........................................................ 16
13. Main Power Connector...................................................................... 16
14. Intruder Alert Header....................................................................... 16
15. Jumpers Shown in Figure 3 ............................................................... 17
16. Clear CMOS Jumper Settings............................................................. 18
17. Keyboard Power Jumper Settings....................................................... 18
18. USB Power Jumper Settings .............................................................. 18
19. Recommended Power Supply Current Values ....................................... 21
20. Thermal Considerations for Components ............................................. 22
21. Wake-up Devices and Events ............................................................ 22
22. Safety Standards............................................................................. 23
23. EMC Regulations ............................................................................. 27
24. Product Certification Markings ........................................................... 30

7
1Product Description
1.1 Overview
1.1.1 Feature Summary
Table 1 summarizes the major features of the Intel Desktop Board DG41CN.
Table 1. Feature Summary
Form Factor MicroATX (9.60 inches by 7.80 inches [243.84 millimeters by 198.12 millimeters])
Processor Support for the following:
•Intel®Core™2 Quad processor in an LGA775 socket
•Intel®Core™2 Duo processor in an LGA775 socket
•Intel®Pentium®Dual-Core processor in an LGA775 socket
•Intel®Celeron®processor Sequence 400 in an LGA775 socket
Memory •Two 240-pin DDR2 SDRAM Dual Inline Memory Module (DIMM) sockets
•Support for DDR2 667 MHz or DDR2 800 MHz DIMMs
•Support for up to 8 GB of system memory
Chipset Intel®G41 Express Chipset, consisting of:
•Intel®82G41 Graphics and Memory Controller Hub (GMCH)
•Intel®82801GB I/O Controller Hub (ICH7)
Video Intel®Graphics Media Accelerator X4500 (Intel®GMA X4500) onboard graphics
subsystem with VGA output
Audio Six (5.1)-channel audio subsystem using the Realtek* ALC662 audio codec,
including:
•Back panel audio jacks
•Front panel audio header
•S/PDIF out header
•CD audio in connector
Legacy I/O
Control
Legacy I/O controller (Winbond* W83627DHG-A) for serial, parallel, flexible
diskette drive, and PS/2* ports
Peripheral
Interfaces
•Eight USB 2.0 ports (four back panel connectors and two front panel headers
each providing two USB ports)
•Four Serial ATA (SATA) interfaces
•One flexible diskette drive interface
•PS/2 keyboard and mouse ports
•One parallel port back panel connector
•One on-board serial port connector and one back panel serial port connector
LAN Support 10/100/1000 Mbits/s LAN subsystem using a Realtek RTL8111C Gigabit Ethernet
Controller
BIOS Intel®BIOS in a 16 Mb SPI device
continued

Intel Desktop Board DG41CN Technical Product Specification
8
Table 1. Feature Summary (continued)
Instantly Available
PC Technology
•Support for PCI* Local Bus Specification, Revision 2.3
•Support for PCI Express* Revision 1.1
•Suspend to RAM support
•Wake on PCI, serial port, front panel, PS/2 devices, PCI Express, LAN, and USB
ports
Expansion
Capabilities
•One PCI Express x16 bus add-in card connector
•One PCI Express x1 add-in card connector
•Two Conventional PCI bus connectors
Hardware Monitor
Subsystem
•Voltage sense to detect out of range power supply voltages
•Thermal sense to detect out of range thermal values
•Two fan headers
•Two fan sense inputs used to monitor fan activity

Product Description
9
1.1.2 Board Layout
Figure 1 shows the location of the major components of Intel Desktop DG41CN.
Figure 1. Major Board Components

Intel Desktop Board DG41CN Technical Product Specification
10
Table 2 lists the components identified in Figure 1.
Table 2. Board Components Shown in Figure 1
Item/callout
from Figure 1 Description
A Conventional PCI bus add-in card connector
B Conventional PCI bus add-in card connector
C PCI Express x16 connector
D Chassis fan header
E PCI Express x1 connector
F Back panel connectors
G Keyboard power jumper block
H Processor core power connector (2 X 2)
I Intel 82G41 GMCH
J LGA775 processor socket
K Processor fan header
L DIMM 0 Channel A socket
M DIMM 0 Channel B socket
N Serial port B connector
O Floppy disk drive connector
P Main Power connector (2 X 12)
Q Battery
R Intel 82801GB I/O Controller Hub (ICH7)
S Serial ATA connectors
T Clear CMOS jumper block
U Intruder alert header
V Front panel header
W Front panel USB header
X USB power jumper block
Y Front panel USB header
Z Piezoelectric speaker
AA CD audio in connector
BB S/PDIF header
CC Front panel audio header

Product Description
11
1.2 Online Support/Information
To find information about… Visit this World Wide Web site:
Intel Desktop Board DG41CN http://www.intel.com/products/motherboard/DG41CN/index.htm
Desktop Board Support http://www.intel.com/support/motherboards/desktop
Available configurations for the Intel
Desktop Board DG41CN
http://www.intel.com/products/motherboard/DG41CN/index.htm
Supported processors http://processormatch.intel.com
Chipset information http://www.intel.com/products/desktop/chipsets/index.htm
BIOS and driver updates http://downloadcenter.intel.com
Tested Memory http://support.intel.com/support/motherboards/desktop/sb/CS-
025414.htm

Intel Desktop Board DG41CN Technical Product Specification
12

13
2Technical Reference
2.1 Connectors, Headers, and Jumpers
This section describes the board’s connectors, headers, and jumpers.
2.1.1 Component-side Headers and Connectors
Figure 2 shows the location of the component-side headers and connectors.
Figure 2. Component-side Connectors and Headers

Intel Desktop Board DG41CN Technical Product Specification
14
Table 3 lists the connectors and headers identified in Figure 2.
Table 3. Connectors and Headers Shown in Figure 2
Item/callout
in Figure 2 Description
A Conventional PCI bus add-in card connector
B Conventional PCI bus add-in card connector
C PCI Express x16 connector
D Chassis fan header
E PCI Express x1 connector
F Processor core power connector (2 X 2)
G Processor fan header
H Serial port B connector
I Floppy disk drive connector
J Main power connector (2 X 12)
K Serial ATA connectors
L Intruder alert header
M Front panel header
N Front panel USB header
O Front panel USB header
P CD audio in header
Q S/PDIF header
R Front panel audio header
Table 4 though Table 14 list the signal names for the component-side connectors and
headers.
Table 4. Serial ATA Connectors
Pin Signal Name
1 Ground
2 TXP
3 TXN
4 Ground
5 RXN
6 RXP
7 Ground

Technical Reference
15
Table 5. Serial Port B Connector
Pin Signal Name Pin Signal Name
1 DDCD2# 2 RRXD2
3 TTXD2 4 DDTR2#
5 Ground 6 DDSR2#
7 RRTS2# 8 CCTS2#
9 RRI2# 10 Key (no pin)
Table 6. Chassis Fan Header
Pin Signal Name
1 Sense
2 +12 V
3 Ground
Table 7. Processor Fan Header
Pin Signal Name
1 Ground
2 +12 V
3 CFAN_D
4 CPUFAN_PWM_C
Table 8. Front Panel Audio Header
Pin Signal Name Pin Signal Name
1 MIC2_L 2 AGND
3 MIC2_R 4 F_AUDIO_DET#
5 LIN2_R 6 MIC_JD
7 AGND 8 KEY (no pin)
9 LIN2_L 10 LIN_JD
Table 9. S/PDIF Out Header
Pin Signal Name
1 +5V
2 Key (no pin)
3 SPDIFO
4 Ground

Intel Desktop Board DG41CN Technical Product Specification
16
Table 10. Front Panel Header
Pin Signal Name Pin Signal Name
1 HDLED+ 2 FP_LED+
3 HDLED- 4 FP_LED-
5 Ground 6 FP_PWRBTN#
7 FP_SYS_RST# 8 Ground
9 FPA_DET# 10 Key (no pin)
Table 11. Front Panel USB1/USB2 Header
Pin Signal Name Pin Signal Name
1 +5V_Dual 2 +5V_Dual
3 D1- 4 D2-
5 D1+ 6 D2+
7 Ground 8 Ground
9 Key (no pin) 10 No connect
Table 12. Processor Core Power Connector
Pin Signal Name Pin Signal Name
1 Ground 2 Ground
3 +12 V 4 +12 V
Table 13. Main Power Connector
Pin Signal Name Pin Signal Name
1 +3.3 V 13 +3.3 V
2 +3.3 V 14 -12 V
3 Ground 15 Ground
4 +5 V 16 PS-ON# (power supply remote on/off)
5 Ground 17 Ground
6 +5 V 18 Ground
7 Ground 19 Ground
8 PWRGD (Power Good) 20 No connect
9 +5 V (Standby) 21 +5 V
10 +12 V 22 +5 V
11 +12 V 23 +5 V
12 +3.3 V 24 Ground
Table 14. Intruder Alert Header
Pin Signal Name
1 Intruder#
2 Ground

Technical Reference
17
2.1.2 Jumpers
Figure 3 shows the location of the board’s jumper blocks.
Figure 3. Jumpers
Table 15 lists the jumper blocks identified in Figure 3.
Table 15. Jumpers Shown in Figure 3
Item/callout
in Figure 3 Description
A Keyboard power jumper block
B Clear CMOS jumper block
C USB power jumper block

Intel Desktop Board DG41CN Technical Product Specification
18
Table 16 though Table 18 list the settings for the jumper blocks.
Table 16. Clear CMOS Jumper Settings
Function/Mode Jumper Setting Description
Normal 1-2 The BIOS uses current configuration information and
passwords for booting.
Clear CMOS 2-3 Clears the time, date, and BIOS password.
Note: You can clear these settings by turning off the system
power and moving the jumper to pins 2 and 3. After 10
seconds, move the jumper back to pins 1 and 2 and power on
the system.
Do not leave the jumper on pins 2 and 3 while the system is
powered on or the desktop board may be damaged.
Table 17. Keyboard Power Jumper Settings
Function/Mode Jumper Setting Configuration
Disable 1-2 Disables the keyboard wake-up feature
Enable 2-3 Enables the keyboard wake-up feature (default)
Table 18. USB Power Jumper Settings
Function/Mode Jumper Setting Configuration
Enable 1-2 Enables the USB wake-up feature (default)
Disable 2-3 Disables the USB wake-up feature

Technical Reference
19
2.1.3 Back Panel Connectors
Figure 4 shows the locations of the back panel connectors.
Item Description
A PS/2 mouse
B PS/2 keyboard
C Serial A
D Parallel
E VGA
F USB 2.0 (2)
G LAN
H USB 2.0 (2)
I Line in
J Line out
K Mic
Figure 4. Back Panel Connectors

Intel Desktop Board DG41CN Technical Product Specification
20
2.2 Mechanical Considerations
2.2.1 Form Factor
The board is designed to fit into a microATX-form-factor chassis. Figure 5 illustrates
the mechanical form factor of the board. Dimensions are given in inches [millimeters].
The outer dimensions are 9.60 inches by 7.80 inches [243.84 millimeters by
198.12 millimeters]. The locations of the I/O connectors and mounting holes are in
compliance with the ATX specification.
Figure 5. Board Dimensions