Intel SE7520AF2 User manual

Intel® Server Board SE7520AF2
User Guide
A Guide for Technically Qualified Assemblers of Intel®Identified
Subassemblies/Products
Order Number: C63389-003

ii
Disclaimer
Information in this document is provided in connection with Intel®products. No license, express or implied, by estoppel or
otherwise, to any intellectual property rights is granted by this document. Except as provided in Intel’s Terms and Conditions
of Sale for such products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied warranty, relating
to sale and/or use of Intel products including liability or warranties relating to fitness for a particular purpose, merchantability,
or infringement of any patent, copyright or other intellectual property right. Intel products are not designed, intended or
authorized for use in any medical, life saving, or life sustaining applications or for any other application in which the failure of
the Intel product could create a situation where personal injury or death may occur. Intel may make changes to
specifications and product descriptions at any time, without notice.
Intel server boards contain a number of high-density VLSI and power delivery components that need adequate airflow for
cooling. Intel’s own chassis are designed and tested to meet the intended thermal requirements of these components when
the fully integrated system is used together. It is the responsibility of the system integrator that chooses not to use Intel
developed server building blocks to consult vendor datasheets and operating parameters to determine the amount of airflow
required for their specific application and environmental conditions. Intel Corporation can not be held responsible if
components fail or the server board does not operate correctly when used outside any of their published operating or non-
operating limits.
Intel, Intel Pentium, and Intel Xeon are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the
United States and other countries.
*Other names and brands may be claimed as the property of others.
Copyright © 2004, Intel Corporation. All Rights Reserved

Preface
Intel® Server Board SE7520AF2 User Guide iii
Preface
About this Manual
Thank you for purchasing and using the Intel®Server Board SE7520AF2.
This manual is written for system technicians who are responsible for troubleshooting, upgrading,
and repairing this server board. This document provides a brief overview of the features of the
board/chassis, a list of accessories or other components you may need, troubleshooting information,
and instructions on how to add and replace components on the Intel®Server Board SE7520AF2. For
the latest version of this manual, refer to
http://support.intel.com/support/motherboards/server/SE7520AF2/
Manual Organization
Chapter 1 provides a brief overview of the Server Board SE7520AF2. In this chapter, you will find
a list of the server board features, photos of the product, and product diagrams to help you identify
components and their locations.
Chapter 2 provides instructions on adding and replacing components. Use this chapter for step-by-
step instructions and diagrams for installing or replacing components such as the memory,
processor, and the battery, among other components.
Chapter 3 provides instructions on using the utilities that are shipped with the board or that may be
required to update the system. This includes how to perform a BIOS update, and how to reset the
password or CMOS. Information about the specific BIOS settings and screens is available in the
Intel® Server Board SE7520AF2 Technical Product Specification.
Chapter 4 provides troubleshooting information. In this chapter, you will find BIOS error messages
and POST code messages. You will also find suggestions for performing troubleshooting activities
to identify the source of a problem.
Product Accessories
This server board is compatible with the following Intel®Server Chassis:
Intel®Server Chassis SC5300
Intel®Server Chassis SC5300BRP
Intel®Server Chassis SC5300LX
You may need or want to purchase one or more of the following accessory items for your server:
Intel®RAID Activation Key
Intel®Portable Cache Module (battery back-up unit) with 128MB ECC DDR333
Intel®Server Management Module “Professional Edition”
Intel®Server Management Module “Advanced Edition”
Processor(s), DDR2-400 system memory DIMMs, hard drive(s), floppy drive, CD-ROM or
DVD-ROM drive, RAID controller, operating system

Preface
iv Intel® Server Board SE7520AF2 User Guide
For information about which accessories, memory, processors, and third-party hardware have been
tested and can be used with your board, and for ordering information for Intel products, see
http://support.intel.com/support/motherboards/server/SE7520AF2/.
Additional Information and Software
If you need more information about this product or information about the accessories that can be
used with this server board, use the following resources. These files are available at
http://support.intel.com/support/motherboards/server/SE7520AF2/
For this information or software Use this Document or Software
For in-depth technical information about
this product, including BIOS settings
and chipset information
Intel® Server Board SE7520AF2 Technical Product Specification
If you just received this product and
need to install it
Intel® Server Board SE7520AF2 Quick Start User’s Guide in the product
box, or online at:
http://support.intel.com/support/motherboards/server/sb/CS-012985.htm
For virtual system tours and interactive
repair information
http://support.intel.com/design/servers/smarttool/index.htm
Accessories or other Intel server
products
Spares and Configuration Guide
Hardware (peripheral boards, adapter
cards) and operating systems that have
been tested with this product
Tested Hardware Operating Systems List
Chassis that have been tested with this
product
Reference Chassis List
Processors that have been tested with
this product
Supported Processors
DIMMs that have been tested with this
product
Tested Memory List
To make sure your system falls within
the allowed power budget
Power Budget Tool
For software to manage your Intel®
server
Intel® Server Management Software
For drivers Driver (for an extensive list of drivers available)
Operating System Driver (for operating system drivers)
For firmware and BIOS updates, or
BIOS recovery
Download Finder

Preface
Intel® Server Board SE7520AF2 User Guide v
Safety Information
WARNING
Before working with your server product, whether you are using this guide or any other
resource as a reference, pay close attention to the safety instructions. You must adhere to the
assembly instructions in this guide to ensure and maintain compliance with existing product
certifications and approvals. Use only the described, regulated components specified in this
guide. Use of other products / components will void the UL listing and other regulatory
approvals of the product and will most likely result in noncompliance with product
regulations in the region(s) in which the product is sold.
Emissions Disclaimer
To ensure EMC compliance with your local regional rules and regulations, the final configuration
of your end system product may require additional EMC compliance testing. For more information
please contact your local Intel Representative.
See “Regulatory and Integration Information” for product safety compliance and EMC regulatory
compliance information. This is an FCC Class A device. Integration of it into a Class B chassis
does not result in a Class B device.
Intended Uses
This product was evaluated as Information Technology Equipment (ITE), which may be installed in
offices, schools, computer rooms, and similar commercial type locations. The suitability of this
product for other product categories and environments (such as: medical, industrial,
telecommunications, NEBS, residential, alarm systems, test equipment, etc.), other than an ITE
application, may require further evaluation
EMC Testing
Before computer integration, make sure that the chassis, power supply, and other modules have
passed EMC testing using a server board with a microprocessor from the same family (or higher)
and operating at the same (or higher) speed as the microprocessor used on this server board.

Preface
vi Intel® Server Board SE7520AF2 User Guide
Warnings
System power on/off: The power button DOES NOT turn off the system
AC power. To remove power from system, you must unplug the AC power
cord from the wall outlet. Make sure the AC power cord is unplugged before
you open the chassis, add, or remove any components.
Hazardous conditions, devices and cables:Hazardous electrical
conditions may be present on power, telephone, and communication cables.
Turn off the server and disconnect the power cord, telecommunications
systems, networks, and modems attached to the server before opening it.
Otherwise, personal injury or equipment damage can result.
Electrostatic discharge (ESD) and ESD protection: ESD can
damage disk drives, boards, and other parts. We recommend that you
perform all procedures in this chapter only at an ESD workstation. If one is
not available, provide some ESD protection by wearing an antistatic wrist
strap attached to chassis ground any unpainted metal surface on your
server when handling parts.
ESD and handling boards: Always handle boards carefully. They can
be extremely sensitive to ESD. Hold boards only by their edges. After
removing a board from its protective wrapper or from the server, place the
board component side up on a grounded, static free surface. Use a
conductive foam pad if available but not the board wrapper. Do not slide
board over any surface.
Installing or removing jumpers: A jumper is a small plastic encased
conductor that slips over two jumper pins. Some jumpers have a small tab on
top that you can grip with your fingertips or with a pair of fine needle nosed
pliers. If your jumpers do not have such a tab, take care when using needle
nosed pliers to remove or install a jumper; grip the narrow sides of the
jumper with the pliers, never the wide sides. Gripping the wide sides can
damage the contacts inside the jumper, causing intermittent problems with
the function controlled by that jumper. Take care to grip with, but not
squeeze, the pliers or other tool you use to remove a jumper, or you may
bend or break the stake pins on the board.

Preface
Intel® Server Board SE7520AF2 User Guide vii
Safety Cautions
Read all caution and safety statements in this document before performing any of the instructions.
See also Intel Server Boards and Server Chassis Safety Information on the Resource CD and/or at
http://support.intel.com/support/motherboards/server/safecert.htm.
SAFETY STEPS: Whenever you remove the chassis covers to access the inside of the
system, follow these steps:
1. Turn off all peripheral devices connected to the system.
2. Turn off the system by pressing the power button.
3. Unplug all AC power cords from the system or from wall outlets.
4. Label and disconnect all cables connected to I/O connectors or ports on the back of
the system.
5. Provide some electrostatic discharge (ESD) protection by wearing an antistatic wrist
strap attached to chassis ground of the system—any unpainted metal surface—
when handling components.
6. Do not operate the system with the chassis covers removed.
A microprocessor and heat sink may be hot if the system has been running. Also, there may
be sharp pins and edges on some board and chassis parts. Contact should be made with
care. Consider wearing protective gloves.
Wichtige Sicherheitshinweise
Lesen Sie zunächst sämtliche Warn- und Sicherheitshinweise in diesem Dokument, bevor Sie eine
der Anweisungen ausführen. Beachten Sie hierzu auch die Sicherheitshinweise zu Intel-
Serverplatinen und -Servergehäusen auf der Ressourcen-CD oder unter
http://support.intel.com/support/motherboards/server/safecert.htm.
SICHERHEISMASSNAHMEN: Immer wenn Sie die Gehäuseabdeckung abnehmen um an
das Systeminnere zu gelangen, sollten Sie folgende Schritte beachten:
1. Schalten Sie alle an Ihr System angeschlossenen Peripheriegeräte aus.
2. Schalten Sie das System mit dem Hauptschalter aus.
3. Ziehen Sie den Stromanschlußstecker Ihres Systems aus der Steckdose.
4. Auf der Rückseite des Systems beschriften und ziehen Sie alle Anschlußkabel von
den I/O Anschlüssen oder Ports ab.
5. Tragen Sie ein geerdetes Antistatik Gelenkband, um elektrostatische Ladungen
(ESD) über blanke Metallstellen bei der Handhabung der Komponenten zu
vermeiden.
6. Schalten Sie das System niemals ohne ordnungsgemäß montiertes Gehäuse ein.
Der Mikroprozessor und der Kühler sind möglicherweise erhitzt, wenn das System in Betrieb
ist. Außerdem können einige Platinen und Gehäuseteile scharfe Spitzen und Kanten
aufweisen. Arbeiten an Platinen und Gehäuse sollten vorsichtig ausgeführt werden. Sie
sollten Schutzhandschuhe tragen.

Preface
viii Intel® Server Board SE7520AF2 User Guide
重要安全指
在行任何指令之前，本文档中的所有注意事及安全声明。参 Resource
CD（源光） 和/或 http://support.intel.com/support/motherboards/server/safecert.htm 上的
Intel Server Boards and Server Chassis Safety Information （《Intel
服器主板与服器机箱安全信息》）。
Consignes de sécurité
Lisez attention toutes les consignes de sécurité et les mises en garde indiquées dans ce document
avant de suivre toute instruction. Consultez Intel Server Boards and Server Chassis Safety
Information sur le CD Resource CD ou bien rendez-vous sur le site
http://support.intel.com/support/motherboards/server/safecert.htm.
CONSIGNES DE SÉCURITÉ -Lorsque vous ouvrez le boîtier pour accéder à l’intérieur du
système, suivez les consignes suivantes:
1. Mettez hors tension tous les périphériques connectés au système.
2. Mettez le système hors tension en mettant l’interrupteur général en position OFF
(bouton-poussoir).
3. Débranchez tous les cordons d’alimentation c.a. du système et des prises murales.
4. Identifiez et débranchez tous les câbles reliés aux connecteurs d’E-S ou aux accès
derrière le système.
5. Pour prévenir les décharges électrostatiques lorsque vous touchez aux
composants, portez une bande antistatique pour poignet et reliez-la à la masse du
système (toute surface métallique non peinte du boîtier).
6. Ne faites pas fonctionner le système tandis que le boîtier est ouvert.
Le microprocesseur et le dissipateur de chaleur peuvent être chauds si le système a été
sous tension. Faites également attention aux broches aiguës des cartes et aux bords
tranchants du capot. Nous vous recommandons l'usage de gants de protection.

Preface
Intel® Server Board SE7520AF2 User Guide ix
Instrucciones de seguridad importantes
Lea todas las declaraciones de seguridad y precaución de este documento antes de realizar
cualquiera de las instrucciones. Vea Intel Server Boards and Server Chassis Safety Information en
el CD Resource y/o en http://support.intel.com/support/motherboards/server/safecert.htm.
INSTRUCCIONES DE SEGURIDAD: Cuando extraiga la tapa del chasis para acceder al
interior del sistema, siga las siguientes instrucciones:
1. Apague todos los dispositivos periféricos conectados al sistema.
2. Apague el sistema presionando el interruptor encendido/apagado.
3. Desconecte todos los cables de alimentación CA del sistema o de las tomas de
corriente alterna.
4. Identifique y desconecte todos los cables enchufados a los conectores E/S o a los
puertos situados en la parte posterior del sistema.
5. Cuando manipule los componentes, es importante protegerse contra la descarga
electrostática (ESD). Puede hacerlo si utiliza una muñequera antiestática sujetada
a la toma de tierra del chasis — o a cualquier tipo de superficie de metal sin pintar.
6. No ponga en marcha el sistema si se han extraído las tapas del chasis.
Si el sistema ha estado en funcionamiento, el microprocesador y el disipador de calor
pueden estar aún calientes. También conviene tener en cuenta que en el chasis o en el
tablero puede haber piezas cortantes o punzantes. Por ello, se recomienda precaución y el
uso de guantes protectores.
AVVERTENZA: Italiano
PASSI DI SICUREZZA: Qualora si rimuovano le coperture del telaio per accedere all’interno
del sistema, seguire i seguenti passi:
1. Spegnere tutti i dispositivi periferici collegati al sistema.
2. Spegnere il sistema, usando il pulsante spento/acceso dell’interruttore del sistema.
3. Togliere tutte le spine dei cavi del sistema dalle prese elettriche.
4. Identificare e sconnettere tutti i cavi attaccati ai collegamenti I/O od alle prese
installate sul retro del sistema.
5. Qualora si tocchino i componenti, proteggersi dallo scarico elettrostatico (SES),
portando un cinghia anti-statica da polso che è attaccata alla presa a terra del telaio
del sistema – qualsiasi superficie non dipinta – .
6. Non far operare il sistema quando il telaio è senza le coperture.
Se il sistema è stato a lungo in funzione, il microprocessore e il dissipatore di calore
potrebbero essere surriscaldati. Fare attenzione alla presenza di piedini appuntiti e parti
taglienti sulle schede e sul telaio. È consigliabile l'uso di guanti di protezione.

Contents
Intel® Server Board SE7520AF2 User Guide xi
Contents
1Server Board Features................................................................................... 1
Connector and Header Locations........................................................................................ 4
Configuration Jumpers......................................................................................................... 5
Back Panel Connectors........................................................................................................ 6
Hardware Requirements....................................................................................................... 7
2Hardware Installations and Upgrades........................................................ 11
Before You Begin ................................................................................................................11
Tools and Supplies Needed ............................................................................................... 11
Installing and Removing Memory......................................................................................11
Installing DIMMs ......................................................................................................... 12
Removing DIMMs ....................................................................................................... 13
Installing or Replacing the Processor............................................................................... 13
Installing the Processor............................................................................................. 14
Removing a Processor .............................................................................................. 16
Installing or Removing a PCI Card .................................................................................... 17
Replacing the Backup Battery ........................................................................................... 20
3Server Utilities .............................................................................................. 23
Using the BIOS Setup Utility .............................................................................................. 23
Starting Setup............................................................................................................. 23
If You Cannot Access Setup ..................................................................................... 23
Setup Menus ............................................................................................................... 23
4Upgrading the BIOS ..................................................................................... 25
Preparing for the Upgrade......................................................................................... 25
Upgrading the BIOS ................................................................................................... 26
Clearing the Password ....................................................................................................... 26
Clearing the CMOS.............................................................................................................. 27
5Troubleshooting ........................................................................................... 28
Resetting the System.......................................................................................................... 34
Problems following Initial System Installation................................................................. 34
First Steps Checklist.................................................................................................. 34
Hardware Diagnostic Testing............................................................................................. 35
Verifying Proper Operation of Key System Lights.................................................. 36
Confirming Loading of the Operating System......................................................... 36
Specific Problems and Corrective Actions....................................................................... 36
Power Light Does Not Light ...................................................................................... 36
No Characters Appear on Screen ............................................................................. 37
Characters Are Distorted or Incorrect...................................................................... 38
System Cooling Fans Do Not Rotate Properly ........................................................ 38
Diskette Drive Activity Light Does Not Light ........................................................... 38

Contents
xii Intel® Server Board SE7520AF2 User Guide
CD-ROM Drive or DVD-ROM Drive Activity Light Does Not Light ......................... 39
Cannot Connect to a Server ...................................................................................... 39
Problems with Network.............................................................................................. 39
System Boots when Installing PCI Card .................................................................. 40
Problems with Newly Installed Application Software ............................................. 40
Problems with Application Software that Ran Correctly Earlier............................ 40
Devices are not Recognized under Device Manager (Windows* Operating
System)......................................................................................................... 41
Hard Drive(s) are not Recognized............................................................................. 41
Bootable CD-ROM Is Not Detected ........................................................................... 41
LED Information ......................................................................................................... 42
BIOS POST Beep Codes ............................................................................................ 43
Boot Block Error Beep Codes................................................................................... 43
POST Error Beep Codes............................................................................................ 44
BIOS Recovery Beep Codes...................................................................................... 44
Regulatory and Certification Information ....................................................... 45
Product Regulatory Compliance ....................................................................................... 45
Product Safety Compliance....................................................................................... 45
Product EMC Compliance – Class A Compliance................................................... 45
Certifications / Registrations / Declarations............................................................ 46
Product Regulatory Compliance Markings....................................................................... 47
Electromagnetic Compatibility Notices ............................................................................ 47
FCC Verification Statement (USA) ............................................................................ 47
ICES-003 (Canada) ..................................................................................................... 48
Europe (CE Declaration of Conformity) ................................................................... 48
VCCI (Japan) ............................................................................................................... 48
BSMI (Taiwan)............................................................................................................. 49
RRL (Korea) ................................................................................................................ 49
CNCA (CCC-China)..................................................................................................... 49
Intel®Server Issue Report Form....................................................................... 53

Contents
Intel® Server Board SE7520AF2 User Guide xiii
Figures
Figure 1. Intel®Server Board SE7520AF2..................................................................................1
Figure 2. Server Board Connector and Header Locations........................................................... 4
Figure 3. Configuration Jumper Location..................................................................................... 5
Figure 4. Back Panel Connectors ................................................................................................6
Figure 5. Four DIMM Memory Mirroring....................................................................................... 8
Figure 6. Six DIMM Memory Mirroring ......................................................................................... 8
Figure 7. Eight DIMM Memory Mirroring......................................................................................8
Figure 8. Installing Memory........................................................................................................12
Figure 9. Opening Socket Lever ................................................................................................14
Figure 10. Inserting Processor...................................................................................................14
Figure 11. Closing Socket Lever................................................................................................15
Figure 12. Installing Heat Sink...................................................................................................16
Figure 13. Removing the PCI Air Duct....................................................................................... 17
Figure 14. PCI Hot-plug LEDs at Rear of Chassis.....................................................................18
Figure 15. Installing a PCI Card.................................................................................................19
Figure 16. Replacing the Backup Battery .................................................................................. 21
Figure 17. Password Clear Jumper ...........................................................................................26
Figure 18. Clearing the CMOS Jumper......................................................................................27
Tables
Table 1. Server Board Features...................................................................................................2
Table 2. Configuration Jumper [J1D1] ......................................................................................... 5
Table 3. NIC LEDs....................................................................................................................... 6
Table 4. Keyboard Commands ..................................................................................................24
Table 5. Resetting the System...................................................................................................34
Table 6. LED Descriptions ......................................................................................................... 42
Table 7. Boot Block Error Beep Codes...................................................................................... 43
Table 8. POST Error Beep Codes .............................................................................................44
Table 9. Troubleshooting BIOS Beep Codes.............................................................................44

Server Board Features
Intel® Server Board SE7520AF2 User Guide 1
1Server Board Features
This chapter briefly describes the main features of the Intel®Server Board SE7520AF2. This
chapter provides a photograph of the product, a list of the server board features, and diagrams
showing the location of important components and connections on the server board.
Two versions of this server board are manufactured. One version provides PCI hot plug support that
allows you to remove PCI cards from the system without removing the system AC power supply.
The hot plug option may not be available in your geography, contact your Intel representative for
more details. The other version does not provide PCI hot plug features. This document describes
features of both versions of the server board. The differences are called out where they apply.
The Intel® Server Board SE7520AF2 is shown in the following picture.
Figure 1. Intel®Server Board SE7520AF2

Server Board Features
2 Intel® Server Board SE7520AF2 User Guide
Table 1 summarizes the major features of the server board.
Table 1. Server Board Features
Feature Description
Processors Up to two Intel® Xeon processors with an 800 MHz Front Side Bus (FSB).
Memory DDR2-400 MHz compliant registered ECC DIMMs for up to 16 GB of system
memory in a dual-channel architecture
DIMM sockets: eight 72-bit, 240-pin
Supported DIMM sizes: 256 MB, 512 MB, 1 GB, 2 GB
Dual channel architecture
Memory Mirroring and Sparing
Chipset Intel® E7520 chipset:
Supports 800 MHz Front Side Bus (FSB)
Intel® E7520 Memory Controller Hub (MCH)
Intel® 6700PHX 64-Bit PCI Hub
Intel® 82801ER I/O Controller Hub5 (ICH-5R)
I/O Control Super I/O controller chip that provides:
Two stacked and interchangeable PS/2* compatible keyboard / mouse ports
Three external USB 2.0 ports
USB header providing for two additional front panel USB Ports
One external serial port on the rear I/O port area (Serial A)
One serial port header to provide a second, optional serial port (Serial B)
One IDE connector supporting up to two ATA-100 compatible devices
One standard floppy drive interface
Video Integrated onboard ATI Rage* XL SVGA video controller
8 MB SDRAM video memory
SVGA video port
Hard Disk Drive Dual-channel LSI Logic* 53C1030 Ultra320 wide SCSI controller
Two serial ATA 150 ports
Supported for entry-level RAID functionality (LSI Logic* integrated mirroring
and integrated striping)
RAID Integrated Intel® RAID Controller SROMBU42E through Intel XScale®
technology. Includes support for up to 256 MB of unbuffered DDR333 RAID
cache. (Requires Intel® RAID Activation Key and either the Intel® Portable
Cache Module or one 128 MB DDR333 memory DIMM. See ROMB battery
backup unit support below.)
LSI Logic* integrated mirroring and integrated striping
ROMB battery backup unit support. (Requires the Intel® Portable Cache
Module accessory kit or one 128 MB DDR333 memory DIMM.)
Continued

Server Board Features
Intel® Server Board SE7520AF2 User Guide 3
Table 1. Server Board Features (continued)
LAN Dual integrated 10/100/1000 Mb on-board Ethernet connectors
Two RJ-45 stacked connectors
Intel® 82546GB
Expansion Slots Five full-length, full-height PCI expansion slots.1
Slot 1: PCI-X* 64-bit/133 MHz (Hot-Plug capable on Hot Plug SKU only.)
Slot 3: PCI Express* x4 (Hot-Plug capable on Hot Plug SKU only.)
Slot 4: PCI Express* x8 (Hot-Plug capable on Hot Plug SKU only.)
Slot 5: PCI-X* 64-bit/133 MHz (Hot-Plug capable on Hot Plug SKU only.)
Slot 6: PCI-X* 64-bit/100 MHz (One slot and two slot riser capable.)
Fans Six multi-speed system fan headers
Two single-speed CPU fan headers
Server Management National Semiconductor* PC87431 controller to provide monitoring, alerting
and logging of critical sensor information
Intel® Light Guided Diagnostics on critical FRU devices, such as processors,
memory, and power
Front panel LCD connectors for use with the Intel® Local Control Panel
Flexible management controller to support Standard and Advanced
Management modules
Form Factor SSI-EEB3.5 compliant form factor
Board size 12 inches by 13 inches
1The omission of Slot 2 is deliberate. Slot 2 is reserved for the RAID DIMM.

Server Board Features
4 Intel® Server Board SE7520AF2 User Guide
Connector and Header Locations
A Hot Plug PCI Rear Attention
LEDs
R CPU1 Fan Header II HSBP A Header
B PCI Slot 5 (PCI-X*,
64-bit/133 MHz)
S CPU2 Fault LED JJ Front Panel Control LED Header
C PCI Slot 6 (PCI-X*,
64-bit/100 MHz)
T CPU2 Fan Header KK SCSI Channel A Header
D System Fan 6 Header U CPU1 Socket LL IPMB Header
E System Fan 5 Header V CPU2 Socket MM Intel® RAID Activation Key Socket
F ID LED W SATA A1 Header NN SCSI Channel B Header
G Status LED X SATA A2 Header OO PCI Slot 4 (PCI Express* x8)
H NIC 2 (top), NIC 1 (bottom)
Connectors
Y Intel® Management Module
Connector
PP PCI Slot 3 (PCI Express* x4)
I POST LEDs Z ATA-100 Connector QQ RAID DIMM Socket
J Serial A (top),
Video (bottom) Connectors
AA Floppy Connector RR PCI Slot 1 (PCI-X*, 64-bit / 133 MHz)
K Mouse (top), Keyboard (bottom)
Connectors
BB System Fan 1 Header SS Front Panel Header
L USB1, USB2, USB3 Connectors CC System Fan 2 Header TT Jumper Block
M Auxiliary Signal Header DD System Fan 3 Header UU HDD LED Header
N Main Power Header EE System Fan 4 Header VV Chassis Intrusion Header
O +12 V CPU Header FF USB 4-5 Header WW OEM RMC Header
P DIMM Sockets (left to right:
DIMM4A, DIMM4B, DIMM3A,
DIMM3B, DIMM2A, DIMM2B,
DIMM1A, DIMM1B)
GG Battery XX Serial B Header
Q CPU1 Fault LED HH HSBP B Header YY ICMB Header
Figure 2. Server Board Connector and Header Locations
AD
EF GHIJ K L
M
N
O
TP00808
PQRST
U
V
W
X
YZAABB
CC
DD
EE
FF
GG
HH
II
JJ
KK
LL
MM
NN
SS
TT
UU
VV
WW
XX
YY
RR
QQ PP
OO
BC

Server Board Features
Intel® Server Board SE7520AF2 User Guide 5
Configuration Jumpers
Figure 3. Configuration Jumper Location
Table 2. Configuration Jumper [J1D1]
Jumper Name Pins What happens at system reset…
1-2 BMC Control: These pins should be jumpered for normal operation.CMOS Clear
2-3 Force Erase: If these pins are jumpered, the CMOS settings will be cleared on the
next reset. These pins should not be jumpered for normal operation.
5-6 Protect: These pins should be jumpered for normal operation.Password Clear
6-7 Erase: If these pins are jumpered, administrator and user passwords will be cleared
on the next reset. These pins should not be jumpered for normal operation.
9-10 Normal Boot: These pins should be jumpered for normal operation.Recovery Boot
10-11 Recovery Boot: If these pins are jumpered, the system will attempt to recover the
BIOS by loading the BIOS code into the flash device from a bootable recovery device.
This jumper is typically used when the BIOS has become corrupted. These pins
should not be jumpered for normal operation.
TP00809
1
2
3
5
6
J1D1
7
9
10
11
BMC Control
Force Erase
Protect
CMOS
CLEAR
PASSWORD
CLEAR
Erase
Normal Boot
RECOVERY
BOOT
Recovery Boot

Server Board Features
6 Intel® Server Board SE7520AF2 User Guide
Back Panel Connectors
A USB 1, 2, 3 D Video
B Mouse (top), Keyboard (bottom) E NIC 2 (1 GB)
C Serial A F NIC 1 (1 GB)
Figure 4. Back Panel Connectors
The NIC LEDs at the right and left of each NIC provide the following information.
Table 3. NIC LEDs
LED Color LED State Description
Off No network connection is in place
Solid Green Network connection is in place
Left LED
Blinking Green Transmit/receive activity
Off 10 Mbps connection (if left LED is on or blinking)
Solid Green 100 Mbps connection
Right LED
Solid Amber 1000 Mbps connection
NOTE
Hot-plug SKU only: If the PCI Hot-plug board and the Intel® Server
Chassis SC5300 PCI Hot Plug Upgrade kit are installed, the LEDs in the I/O
port area provide attention information for PCI slots 1, 3, 4, and 5.
TP00663
A
B
C
D
E
F

Server Board Features
Intel® Server Board SE7520AF2 User Guide 7
Hardware Requirements
To avoid integration difficulties and possible board damage, your system must meet the minimum
requirements outlined below. For a list of qualified components, see the links under “Additional
Information and Software.”
Depending on accessory components selected, your server system may have additional
requirements not listed here. For example, to use the integrated Intel® RAID Controller
SROMB4UE option, you must purchase and install both the Intel® RAID Activation Key and one
DDR333 128 MB DIMM or the Intel® Portable Cache Module. The documentation provided with
these accessories outlines the hardware requirements and dependencies to install them.
Processor
Up to two Intel® Xeon™ processors can be used. These must have frequencies starting at 2.8 GHz
using the 90 nanometer technology and utilizing an 800 MHz front side bus. Previous generations
of the Intel® Xeon™ processors are not supported.
When two processors are installed, both must be of identical revision, core voltage, cache size, and
bus / core speed. When a single processor is installed, it must be in the socket labeled CPU_1.
See Supported Processors.
System Memory
The Intel® Server Board SE7520AF2 includes four banks of DIMMs across two channels. Channel
A consists of DIMMs 1A, 2A, 3A, and 4A. Channel B consists of DIMMs 1B, 2B, 3B, and 4B.
Bank 1 (DIMMs 1B and 1A) are closest to the edge of the server board. DIMMs must be identical
within each bank.
The minimum allowed memory is 256 MB, using a single 256 MB DIMM in either DIMM socket
1B or DIMM socket 1A . The system operates in single channel when only a single DIMM is
installed. The maximum allowed usable memory is 16 GB, using 2 GB DIMMs.
DIMMs must meet the following requirements:
Use only DDR2-400 ECC, registered DDR DIMM modules
DIMM organization x72 ECC
Use 240-pin DIMMs
DIMMs of the following size can be used: 256 MB, 512 MB, 1 GB, and 2 GB.
For a complete list of supported memory DIMMs, see Tested Memory List.
The Intel® E7520 chipset includes hardware that supports memory mirroring and memory on-line
sparing. Both memory mirroring and memory on-line sparing provide a way to prevent data loss in
case a DIMM fails.

Server Board Features
8 Intel® Server Board SE7520AF2 User Guide
With memory mirroring the system maintains two copies of all data in the memory subsystem. If a
DIMM fails, the data is not lost because the second copy of the data is available from the mirrored
DIMM. The system will not fail due to memory error unless both the primary and the mirrored
copy of the data become corrupt at the same time.
In a mirrored system, the maximum usable memory is one-half of the installed memory, with a
minimum of four DIMMs installed. Since the data is duplicated across DIMMs, it means that up to
four DIMMs are actively in use at any one time. If eight 2 GB DIMMs are installed, the maximum
usable memory is 8 GB. The remaining four 2 GB DIMMs are used for mirroring.
Three methods for memory mirroring are available:
Four identical DIMMs are used in DIMM sockets 1A, 2A, 1B, and 2B. If the DIMM in socket
1B fails, the DIMM in socket 2A takes over. If the DIMM in socket 1A fails, the DIMM in
socket 2B takes over. See Figure 5.
Six DIMMs are used with identical DIMMs in sockets 1A and 1B, and with identical DIMMs
in sockets 2A, 2B, 3A, and 3B. See Figure 6.
If the DIMM in socket 1A fails, the DIMM in socket 1B takes over.
If the DIMM in socket 2B fails, the DIMM in socket 3A takes over.
If the DIMM in socket 2A fails, the DIMM in socket 3B takes over.
Eight DIMM population with identical devices in DIMM Bank 1 and Bank 2, and identical
devices in Bank 3, and Bank 4. DIMMs 1A, 1B, 2A, 2B must be identical and DIMMs 3A, 3B,
4A, 4B must be identical. See Figure 7.
If the DIMM in socket 1B fails, the DIMM in socket 2A takes over.
If the DIMM in socket 1A fails, the DIMM in socket 2B takes over.
If the DIMM in socket 3B fails, the DIMM in socket 4A takes over.
If the DIMM in socket 3A fails, the DIMM in socket 4B takes over.
D
I
M
M
1
B
MCH
D
I
M
M
1
A
D
I
M
M
2
B
D
I
M
M
2
A
D
I
M
M
3
B
D
I
M
M
3
A
D
I
M
M
4
B
D
I
M
M
4
A
Primary
Empty Empty Mirror
Figure 5. Four DIMM Memory
Mirroring
Figure 6. Six DIMM Memory
Mirroring
D
I
M
M
1
B
MCH
D
I
M
M
1
A
D
I
M
M
2
B
D
I
M
M
2
A
D
I
M
M
3
B
D
I
M
M
3
A
D
I
M
M
4
B
D
I
M
M
4
A
Primary
Mirror Primary Mirror
Figure 7. Eight DIMM Memory
Mirroring