Supero X8DTG-DF User manual

X8DTG-DF
USER’S MANUAL
Revision 1.0

Unless you request and receive written permission from Super Micro Computer, Inc., you may not
copy any part of this document.
Information in this document is subject to change without notice. Other products and companies
referred to herein are trademarks or registered trademarks of their respective companies or mark
holders.
Copyright © 2009 by Super Micro Computer, Inc.
All rights reserved.
Printed in the United States of America
Manual Revision 1.0
Release Date: July 6, 2009
The information in this User’s Manual has been carefully reviewed and is believed to be accurate.
The vendor assumes no responsibility for any inaccuracies that may be contained in this document,
makes no commitment to update or to keep current the information in this manual, or to notify any
person or organization of the updates. Please Note: For the most up-to-date version of this
manual, please see our web site at www.supermicro.com.
Super Micro Computer, Inc. ("Supermicro") reserves the right to make changes to the product
described in this manual at any time and without notice. This product, including software, if any,
and documentation may not, in whole or in part, be copied, photocopied, reproduced, translated or
reduced to any medium or machine without prior written consent.
IN NO EVENT WILLSUPERMICRO BE LIABLE FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
SPECULATIVE OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR INABILITY TO
USE THIS PRODUCT OR DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES. IN PARTICULAR, SUPERMICRO SHALL NOT HAVE LIABILITY FOR ANY
HARDWARE, SOFTWARE, OR DATASTORED OR USED WITH THE PRODUCT, INCLUDING THE
COSTS OF REPAIRING, REPLACING, INTEGRATING, INSTALLING OR RECOVERING SUCH
HARDWARE, SOFTWARE, OR DATA.
Any disputes arising between manufacturer and customer shall be governed by the laws of Santa
Clara County in the State of California, USA. The State of California, County of Santa Clara shall
be the exclusive venue for the resolution of any such disputes. Super Micro's total liability for all
claims will not exceed the price paid for the hardware product.
FCC Statement: This equipment has been tested and found to comply with the limits for a Class
A digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the manufacturer’s instruction manual, may cause harmful
interference with radio communications. Operation of this equipment in a residential area is likely
to cause harmful interference, in which case you will be required to correct the interference at your
own expense.
California Best Management Practices Regulations for Perchlorate Materials: This Perchlorate
warning applies only to products containing CR (Manganese Dioxide) Lithium coin cells. “Perchlorate
Material-special handling may apply. See www.dtsc.ca.gov/hazardouswaste/perchlorate”
WARNING: Handling of lead solder materials used in this
product may expose you to lead, a chemical known to
the State of California to cause birth defects and other
reproductive harm.

Preface
About This Manual
This manual is written for system integrators, PC technicians and knowledgeable PC
users. It provides information for the installation and use of the X8DTG-
DF motherboard.
About This Motherboard
The X8DTG-DF motherboard supports the Intel 5500 Series Processor
platform and the QuickPath Interconnect (QPI) Technology, providing the next gen-
eration point-to-point system interface that replaces the current Front Side Bus. With
the 5500 Series Processor built in, the X8DTG-DF substantially enhances system
performance with increased bandwidth and unprecedented scalability optimized
for HPC/Cluster and high-end IU servers. Please refer to our web site (http://www.
supermicro.com/products/) for updates on supported processors. This product is
intended to be installed and serviced by professional technicians.
Manual Organization
Chapter 1 describes the features, specifications and performance of the mother-
board and provides detailed information about the chipset.
Chapter 2 provides hardware installation instructions. Read this chapter when in-
stalling the processor, memory modules and other hardware components into the
system. If you encounter any problems, see Chapter 3, which describes trouble-
shooting procedures for video, memory and system setup stored in the CMOS.
Chapter 4 includes an introduction to BIOS and provides detailed information on
running the CMOS Setup utility.
Appendix A lists BIOS POST Error Codes. Appendix B and Appendix C provide
the Windows OS and Other Software Installation Instructions.
Conventions Used in the Manual
Special attention should be given to the following symbols for proper installation
and to prevent product damage or bodily injury:
Warning: Important information given to ensure proper system installation
or to prevent damage to the components.
Note: Additional Information given to differentiate various models or to
ensure correct system setup.
iii
Preface

X8DTG-DF User's Manual
Contacting Supermicro
Headquarters
Address: Super Micro Computer, Inc.
980 Rock Ave.
San Jose, CA 95131 U.S.A.
Tel: [phone]
Fax: [phone]
Email: [email protected] (General Information)
[email protected] (Technical Support)
Web Site: www.supermicro.com
Europe
Address: Super Micro Computer B.V.
Het Sterrenbeeld 28, 5215 ML
's-Hertogenbosch, The Netherlands
Tel: [phone]
Fax: [phone]
Email: [email protected] (General Information)
[email protected] (Technical Support)
[email protected] (Customer Support)
Asia-Pacific
Address: Super Micro Computer, Inc.
4F, No. 232-1, Liancheng Rd.
Chung-Ho 235, Taipei County
Taiwan, R.O.C.
Tel: [phone]
Fax: [phone]
Web Site: www.supermicro.com.tw
Technical Support:
Email: [email protected]
Tel: [phone], ext.132 or 139
iv

Contacting Supermicro
v
Notes

vi
X8DTG-DF User's Manual
Table of Contents
Preface
About This Manual........................................................................................................iii
About This Motherboard................................................................................................iii
Manual Organization.....................................................................................................iii
Conventions Used in the Manual..................................................................................iii
Contacting Supermicro..................................................................................................iv
Chapter 1 Introduction
1-1 Overview ........................................................................................................1-1
Checklist..........................................................................................................1-1
Motherboard Features ...................................................................................1-6
1-2 Chipset Overview............................................................................................1-9
Main Features of the 5500 Series Processor and the 5520 Chipset............. 1-9
1-3 Special Features........................................................................................... 1-10
Recovery from AC Power Loss..................................................................... 1-10
1-4 PC Health Monitoring.................................................................................... 1-10
Fan Status Monitor with Firmware Control ..................................................1-10
Environmental Temperature Control .............................................................1-10
System Resource Alert .................................................................................1-10
1-5 ACPI Features................................................................................................1-11
Slow Blinking LED for Suspend-State Indicator ............................................1-11
Main Switch Override Mechanism .................................................................1-11
1-6 Power Supply.................................................................................................1-11
1-7 Overview of the Winbond WPCM450 Controller ..........................................1-12
Chapter 2 Installation
2-1 Static-Sensitive Devices..................................................................................2-1
Precautions .....................................................................................................2-1
Unpacking .......................................................................................................2-1
2-2 Motherboard Installation..................................................................................2-2
Tools Needed.................................................................................................. 2-2
Installation Instructions.................................................................................... 2-2
2-3 Processor and Heatsink Installation................................................................2-3
Installing a CPU Heatsink...............................................................................2-5
2-4 Memory Installation ........................................................................................ 2-7
2-5 Control Panel Connectors/IO Ports...............................................................2-10
Back Panel Connectors/IO Ports.................................................................. 2-10
Back Panel Connector Pin Definitions...........................................................2-11
\

Universal Serial Bus (USB).......................................................................2-11
Ethernet Ports .......................................................................................... 2-12
Serial Ports...............................................................................................2-13
Video Connector....................................................................................... 2-13
Unit Identifier Switches.............................................................................2-14
Front Control Panel....................................................................................... 2-15
Front Control Panel Pin Definitions...............................................................2-16
Power LED .............................................................................................. 2-16
HDD/FP UID Switch................................................................................. 2-16
NIC1 LED Indicator.................................................................................. 2-17
NIC2 LED Indicator.................................................................................. 2-17
Overheat (OH)/Fan Fail/PWR Fail/UID LED............................................ 2-18
Power Fail LED........................................................................................ 2-18
Reset Button ...........................................................................................2-19
Power Button ........................................................................................... 2-19
2-6 Connecting Cables........................................................................................ 2-20
20-pin Proprietary Main Power and 8-pin PCI-E Graphic Card Power
Connectors...............................................................................................2-20
Fan Headers............................................................................................. 2-21
NMI Header.............................................................................................. 2-22
Internal Buzzer......................................................................................... 2-22
T-SGPIO Headers.................................................................................... 2-23
PWR I2C (SMB) Connector......................................................................2-24
IPMB I2C SMB .........................................................................................2-24
2-7 Jumper Settings............................................................................................ 2-25
Explanation of Jumpers ................................................................................ 2-25
GLAN Enable/Disable .............................................................................. 2-25
CMOS Clear............................................................................................. 2-26
Watch Dog Enable/Disable ...................................................................... 2-26
VGA Enable..............................................................................................2-27
J_UID_OW (-Overwriting) ........................................................................ 2-28
2-8 Onboard Indicators........................................................................................2-29
GLAN LEDs..............................................................................................2-29
Onboard Power LED .....................................................................2-30
BMC Activity LED.....................................................................................2-30
2-9 Serial ATA Connections................................................................................. 2-31
Serial ATA Ports........................................................................................ 2-31
Chapter 3 Troubleshooting
3-1 Troubleshooting Procedures........................................................................... 3-1
Table of Contents
vii

viii
X8DTG-DF User's Manual
Before Power On ............................................................................................3-1
No Power ........................................................................................................ 3-1
No Video .........................................................................................................3-2
Losing the System’s Setup Configuration.......................................................3-2
Memory Errors ...............................................................................................3-2
3-2 Technical Support Procedures........................................................................ 3-3
3-3 Frequently Asked Questions........................................................................... 3-3
3-4 Returning Merchandise for Service.................................................................3-4
Chapter 4 BIOS
4-1 Introduction...................................................................................................... 4-1
Starting BIOS Setup Utility..............................................................................4-1
How To Change the Configuration Data......................................................... 4-1
Starting the Setup Utility................................................................................. 4-2
4-2 Main Setup...................................................................................................... 4-2
4-3 Advanced Setup Configurations......................................................................4-4
4-4 Security Settings........................................................................................... 4-22
4-5 Boot Configuration ........................................................................................4-24
4-6 Exit Options...................................................................................................4-25
4-7 BIOS Recovery ............................................................................................. 4-26
How to Recover the AMIBIOS Image (-the Main BIOS Block)..................... 4-26
4.7.1 Boot Sector Recovery from a USB Device..........................................4-26
4.7.2 Boot Sector Recovery from an IDE CD-ROM..................................... 4-27
4.7.3 Boot Sector Recovery from a Serial Port ("Serial Flash")...................4-27
Appendix A BIOS Error Beep Codes
A-1 BIOS Error Beep Codes .................................................................................A-1
Appendix B Installing the Windows OS
B-1 Installing the Windows OS for a RAID System ..............................................B-1
B-2 Installing the Windows OS for a Non-RAID System.......................................B-2
Appendix C Software Installation Instructions
C-1 Installing Software Programs.........................................................................C-1
C-2 Configuring Supero Doctor III.........................................................................C-2

Chapter 1: Introduction
1-1
Chapter 1
Introduction
1-1 Overview
Checklist
Congratulations on purchasing your computer motherboard from an acknowledged
leader in the industry. Supermicro boards are designed with the utmost attention to
detail to provide you with the highest standards in quality and performance. Check
that the following items have all been included with your motherboard. If anything
listed here is damaged or missing, contact your retailer.
The following items are included in the bulk package.
One (1) Supermicro Mainboard
•
One (1) Supermicro CD containing drivers and utilities•

1-2
X8DTG-DF User's Manual
Note: The drawings and pictures shown in this manual were based on the
latest PCB Revision available at the time of publishing of the manual. The
motherboard you’ve received may or may not look exactly the same as
the graphics shown in the manual.
X8DTG-DF Motherboard Image

Chapter 1: Introduction
1-3
X8DTG-DF Motherboard Layout
Notes:
Jumpers not indicated are for test purposes only. For more information on1. jumpers or components, refer to Chapter 2.
" " indicates the location of Pin 1.2.
When LE1 LED is on, the onboard power connection is on. Make sure to3. unplug the power cables before removing or installing components.
JPW2 JPW3
J11
+
LE4
SW1
JPW1
FAN4
FAN8
FAN7
FAN3
FAN1
4
1
FAN2
FAN6 FAN5
JLPC80
JPCIE3
JWD1
JPL1
JPG1
LE1
LE2
JBAT1
JL1
JNMI1
JSPK1
J_UID_OW
PHY
x4 in x16 Slot
SBX 2B
SBX 1B
PCI-E 2.0
SBX 2A
IPMB
T-SGPIO0
IPMI_LAN
USB2/3
SBX 1A
P2 DIMM1A
P1DIMM3A
P2 DIMM1B
P1 DIMM2B
P2 DIMM2A
P1 DIMM2A
P2 DIMM2B
P1 DIMM1B
P2 DIMM3A
P1 DIMM1A
P2 DIMM3B
CLEAR
VGA
COM1
LAN2 LAN1 USB0/1
CMOS
I-SATA1
JPI2C (PWR I2C)
CPU1
CPU2
BIOS
T-SGPIO1
I-SATA2
I-SATA3
I-SATA4I-SATA5
I-SATA6
Intel
ICH10R
(South Bridge) Intel
5520
IOH-36D
Intel
82576
LAN CTRL
Winbond
450R
BMC
P1 DIMM3B
Front Panel CTRL
Battery
X8DTG-DF
J12
JPCIE1
JPCIE2

1-4
X8DTG-DF User's Manual
X8DTG-DF Quick Reference
JPW2 JPW3
J11
+
LE4
SW1
JPW1
FAN4
FAN8
FAN7
FAN3
FAN1
4
1
FAN2
FAN6 FAN5
JLPC80
JPCIE3
JWD1
JPL1
JPG1
LE1
LE2
JBAT1
JL1
JNMI1
JSPK1
J_UID_OW
PHY
x4 in x16 Slot
SBX 2B
SBX 1B
PCI-E 2.0
SBX 2A
IPMB
T-SGPIO0
IPMI_LAN
USB2/3
SBX 1A
P2 DIMM1A
P1DIMM3A
P2 DIMM1B
P1 DIMM2B
P2 DIMM2A
P1 DIMM2A
P2 DIMM2B
P1 DIMM1B
P2 DIMM3A
P1 DIMM1A
P2 DIMM3B
CLEAR
VGA
COM1
LAN2 LAN1 USB0/1
CMOS
I-SATA1
JPI2C (PWR I2C)
CPU1
CPU2
BIOS
T-SGPIO1
I-SATA2
I-SATA3
I-SATA4I-SATA5
I-SATA6
Intel
ICH10R
(South Bridge) Intel
5520
IOH-36D
Intel
82576
LAN CTRL
Winbond
450R
BMC
P1 DIMM3B
Front Panel CTRL
Battery
X8DTG-DF
J12
JPCIE1
JPCIE2

Chapter 1: Introduction
1-5
X8DTG-DF Quick Reference (See Chapter 2 for Details)
Jumper Description Default Setting
JBT1 CMOS Clear (See Section 2-8)
JPG1 VGA Enable Pins 1-2 (Enabled)
JPL1 LAN1/2 Enable Pins 1-2 (Enabled)
J_UID_OW Red LED OW (Pins 7/8 of JF1) (Page 2-31) Off (Overwrites)
JWD1 Watch Dog Pins 1-2 (Reset)
Connector Description
COM1 COM1 Serial Port
FAN 1-8 System/CPU Fan Headers
IPMB IPMB (SMB I2C) Header (for IPMI)
JF1 Front Panel Connector
JL1 Chassis Intrusion
JLPC80 JLPC80 Connector
JNMI1 NMI (Non-Maskable Interrupt) Header
JPSK1 Internal Speaker/Buzzer Header
JPW1 12V 20-pin Power Connector (See Chpt. 2)
JPW2/JPW3 12V 8-pin PCI-Exp. Power Connectors (See Chpt. 2)
LAN1/2 Gigabit Ethernet (RJ45) Ports
(IPMI dedicated) LAN LAN (RJ45) Port for IPMI 2.0
PCI-E Slot PCI-Express 2.0 x4 in x 16 slot (JPCIE3)
PWR I2C (JPI2C) Power SMB (System Management Bus) I2C Header
SATA1 ~ SATA6 (Intel South Bridge) SATA Ports
SBX 1A/2A Slots PCI-E slots GPU for (Graphics Processing Unit) support
(J11/J12)
SBX 1B/2B Slots PCI-E slots for GPU support (JPCIE1/JPCIE2)
SW1 Unit Identifier Switch
T-SGPIO-0/T-SGPIO-1 Serial General Purpose Input/Output Headers
USB0/1, USB 2/3 Universal Serial Bus (USB) Ports 0/1, 2/3
VGA Video Port
LED Description
LE1 Onboard Standby PWR warning LED Indicator
LE2 BMC LED Indicator
LE4 (Rear) Unit Identifier (UID) LED Indicator
Warning: To avoid possible system overheating, please be sure to provide
adequate airflow to your system.

1-6
X8DTG-DF User's Manual
Motherboard Features
CPU
Two Intel• ®5500 Series (LGA 1366) processors with each processor supporting
two full-width Intel QuickPath Interconnect (QPI) links with a total of up to 51.2
GT/s Data Transfer Rate (6.4 GT/s per direction)
Memory
Twelve 240-pin DIMM sockets support up to 96 GB of Registered ECC or 24•
GB of Unbuffered ECC/Non-ECC DDR3 1333/1066/800 MHz Memory. (For
Unbuffered ECC/Non-ECC memory, maximum of 2 GB per DIMM is supported.
See Pages 2-7, 2-8 in Chapter 2 for memory Population.)
Chipset
Intel 5520 chipset, including: the 5520 (IOH-36D) and the ICH10R (South•
Bridge).
Expansion Slot
One PCI-E x4 Gen. 2.0 in x16 slot•
SMC Proprietary Slots
Four SBX slots (SBX 1A/2A & SBX 1B/2B) for riser cards (Refer to www.super-•
micro.com/support/resources/riser/ for details.)
BIOS
32 Mb AMI SPI Flash ROM•
ACPI 1.0/2.0/3.0, Plug and Play (PnP), DMI 2.3, SMBIOS 2.3, and USB Key-•
board support
PC Health Monitoring
Onboard voltage monitors for CPU1 VCore, CPU2 VCore, +5Vin,• 12Vcc (V),
V P1 DIMM, V P2 DIMM, +3.3Vcc (V), and Battery Voltage
Fan status monitor with firmware control
•
CPU/chassis temperature monitors•
Platform Environment Control Interface (PECI) ready•
CPU fan auto-off in sleep mode•
CPU slow-down on temperature overheat•
Pulse Width Modulation (PWM) Fan Control•
CPU thermal trip support for processor protection, power LED•
Power-up mode control for recovery from AC power loss•
Auto-switching voltage regulator for CPU cores•
System overheat/Fan Fail LED Indicator and control•
System resource alert via Supero Doctor III•

Chapter 1: Introduction
1-7
ACPI Features
Slow blinking LED for suspend state indicator•
Main switch override mechanism•
ACPI Power Management•
Keyboard Wakeup from Soft-off•
Onboard I/O
Intel ICH10R supports six SATAports (RAID0, RAID1, RAID10, RAID5 supported•
in the Windows OS Environment and RAID 0, RAID 1, RAID 10 supported by
the Linux OS)
Winbond WPCM450 BMC (Baseboard Management Controller) supports IPMI
•
2.0 with KVM support
Intel 82576 Dual-LAN Gigabit Ethernet Controller supports dual Giga-bit LAN
•
ports
Onboard PHY Chip supports IPMI dedicated LAN
•
One COM port•
Up to four USB 2.0 (Universal Serial Bus) connections (2 Ports and 2 Front•
Headers)
Super I/O: Winbond W83527HG
•
Other
Console redirection•
Onboard Fan Speed Control by Thermal Management via BIOS•
CD/Diskette Utilities
BIOS flash upgrade utility and device drivers•
Dimensions
Proprietary 16.64" (L) x 7.71" (W) (422.66 mm x 195.83 mm)•

1-8
X8DTG-DF User's Manual
Block Diagram of the 5500 Series Processor Platform
Note: This is a general block diagram. Please see the previous Mother-
board Features pages for details on the features of each motherboard.
PROCESSOR#0
PROCESSOR#1
QPI
#1
#1
#1
#2
DDR3 DIMM
#2
#2
DDR3 DIMM
#1
#1
#1
DDR3 DIMM
#2
#2
#2
DDR3 DIMM
CC
AA
BB
DD
EE
FF
IOH
Intel 5520
36D
Port1
ICH10R
Ports
2,1
ESI
PE
4-1
PE
5
Winbond
BMC/VGA
VGA CONN
DDR II
PCI
SATA #1
SATA #2
SATA #3
SATA #4
SATA
LPC
SPI
SST25
VF016
CLINK
CLINK
DMI
RTL8201N PHY
Dedicated LAN
LPCIO W83527
ACPI
KBC
SATA #5
SATA #6
RMII
PCI-E x16
PCI-E x16
PCI-E x16
PCI-E x16
#7-10
Ports
Ports
#3-6
Ports
#1-2
PCI-E x4
Intel
82576
RJ45
PCI-E x16
RJ45
Port0
QPI QPI

Chapter 1: Introduction
1-9
1-2 Chipset Overview
Built upon the functionality and the capability of the 5500 Series Processor, the
X8DTG-DF motherboard provides the performance and feature set required for
dual-processor-based systems with configuration optimized for intensive applica-
tions, High Performance Computing (HPC)/Cluster IU server platforms. The Intel
5520 platform consists of the 5500 Series (LGA 1366) processor, the 5520 (IOH-
36D), and the ICH10R (South Bridge). With the Intel QuickPath interconnect (QPI)
controller built in, the 5500 Series Processor platform is the first dual-processing
platform to offer the next generation point-to-point system interconnect that re-
places the current Front Side Bus Technology, substantially enhancing system
performance by utilizing serial link interconnections with increased bandwidth
and scalability.
The IOH connects to each processor through an independent QPI (QuickPath
interconnect) link. Each link consists of 20 pairs of unidirectional differential lanes
for transmission and receiving in addition to a differential forwarded clock. A full-
width QPI link pair provides 84 signals. Each processor supports two QuickPath
links, one going to the other processor and the other to the 5520 chips.
The 5520 chipset supports PCI Express Gen2 lanes peer-to-peer read and write
transactions. The ICH10R provides multiple PCI-Express SATA and USB con-
nections.
In addition, the 5520 platform also offers a wide range of RAS (Reliability, Avail-
ability and Serviceability) features. These features include memory interface ECC,
x4/x8 Single Device Data Correction (SDDC), Cyclic Redundancy Check (CRC),
parity protection, out-of-band register access via SMBus, memory mirroring,
memory sparing, and Hot-plug support on the PCI-Express Interface.
Main Features of the 5500 Series Processor and the 5520
Chipset
Four processor cores in each processor with 8MB shared cache among cores•
Two full-width Intel QuickPath interconnect links, up to 6.4 GT/s of data transfer•
rate in each direction
Virtualization Technology, Integrated Management Engine supported
•
Point-to-point cache coherent interconnect, Fast/narrow unidirectional links, and•
Concurrent bi-directional traffic

1-10
X8DTG-DF User's Manual
1-3 Special Features
Recovery from AC Power Loss
BIOS provides a setting for you to determine how the system will respond when AC
power is lost and then restored to the system. You can choose for the system to
remain powered off (in which case you must press the power switch to turn it back
on) or for it to automatically return to a power- on state. See the Advanced BIOS
Setup section to change this setting. The default setting is Last State.
1-4 PC Health Monitoring
This section describes the PC health monitoring features of the X8DTG-DF.All have
an onboard System Hardware Monitor chip that supports PC health monitoring.
An onboard voltage monitor will scan these onboard voltages continuously: CPU1
VCore, CPU2 VCore, +5Vin, 12Vcc (V), V P1 DIMM, V P2 DIMM, +3.3Vcc (V),
and Battery Voltage. Once a voltage becomes unstable, a warning is given or an
error message is sent to the screen. Users can adjust the voltage thresholds to
define the sensitivity of the voltage monitor.
Fan Status Monitor with Firmware Control
The PC health monitor can check the RPM status of the cooling fans. The onboard
CPU and chassis fans are controlled by Thermal Management via BIOS (under
Hardware Monitoring in the Advanced Setting).
Environmental Temperature Control
The thermal control sensor monitors the CPU temperature in real time and will turn
on the thermal control fan whenever the CPU temperature exceeds a user-defined
threshold. The overheat circuitry runs independently from the CPU. Once it detects
that the CPU temperature is too high, it will automatically turn on the thermal fan
control to prevent any overheat damage to the CPU. The onboard chassis thermal
circuitry can monitor the overall system temperature and alert users when the chas-
sis temperature is too high.
To avoid possible system overheating, please be sure to provide adequate
airflow to your system.
System Resource Alert
This feature is available when used with Supero Doctor III in the Windows OS
environment or used with Supero Doctor II in Linux. Supero Doctor is used to
notify the user of certain system events. For example, you can also configure

Chapter 1: Introduction
1-11
Supero Doctor to provide you with warnings when the system temperature, CPU
temperatures, voltages and fan speeds go beyond a pre-defined range.
1-5 ACPI Features
ACPI stands for Advanced Configuration and Power Interface. The ACPI specifica-
tion defines a flexible and abstract hardware interface that provides a standard
way to integrate power management features throughout a PC system, including
its hardware, operating system and application software. This enables the system
to automatically turn on and off peripherals such as CD-ROMs, network cards, hard
disk drives and printers.
In addition to enabling operating system-directed power management, ACPI
provides a generic system event mechanism for Plug and Play and an operating
system-independent interface for configuration control. ACPI leverages the Plug
and Play BIOS data structures while providing a processor architecture-independent
implementation that is compatible with Windows XP/Windows 2003/Windows 2008/
Windows Vista Operating Systems.
Slow Blinking LED for Suspend-State Indicator
When the CPU goes into a suspend state, the chassis power LED will start blinking
to indicate that the CPU is in suspend mode. When the user presses any key, the
CPU will wake-up and the LED will automatically stop blinking and remain on.
Main Switch Override Mechanism
When an ATX power supply is used, the power button can function as a system
suspend button to make the system enter a SoftOff state. The monitor will be
suspended and the hard drive will spin down. Pressing the power button again
will cause the whole system to wake-up. During the SoftOff state, the ATX power
supply provides power to keep the required circuitry in the system "alive." In case
the system malfunctions and you want to turn off the power, just press and hold
the power button for 4 seconds. This option can be set in the Power section of the
BIOS Setup routine.
1-6 Power Supply
As with all computer products, a stable power source is necessary for proper and
reliable operation. It is even more important for processors that have high CPU
clock rates.
It is strongly recommended that you use a high quality power supply that meetsATX
power supply Specification 2.02 or above. It must also be SSI compliant (For more

1-12
X8DTG-DF User's Manual
information, please refer to the web site at http://www.ssiforum.org/).Additionally, in
areas where noisy power transmission is present, you may choose to install a line
filter to shield the computer from noise. It is recommended that you also install a
power surge protector to help avoid problems caused by power surges.
Note 1. For the proprietary 20-pin main power connector (JPW1) and the
8-pin PCI-Exp. Graphic card power connectors (JPW2/JPW3) to work prop-
erly, please customize your power cables based on the SMC PWR Connec-
tor Pin-Out Definitions listed in the tables on Page 2-20 in Chapter 2.
2. For the PCI-Exp. Graphic cards to work properly, please connect the
PCI-E graphic card power connectors (JPW2/JPW3) to the power sup-
ply.
1-7 Overview of the Winbond WPCM450 Controller
The Winbond WPCM450, a Baseboard Management Controller (BMC), supports
the 2D/VGA-compatible Graphics Core with the PCI interface, Virtual Media, and
Keyboard/Video/Mouse (KVM) Redirection modules.
The WPCM450 BMC interfaces with the host system via a PCI interface to com-
municate with the graphics core. It supports USB 2.0 and 1.1 for remote keyboard/
mouse/virtual media emulation. It also provides LPC interface to control Super IO
functions. The WPCM450 is connected to the network via an external Ethernet
PHY module.
The WPCM450 communicates with onboard components via six SMBus interfaces,
fan control, Platform Environment Control Interface (PECI) buses.
Note: For more information on IPMI configuration, please refer to the
Embedded IPMI User's Guide posted on our website @ http://www.super-
micro.com/support/manuals/.