Tyan THUNDER 2500 User Manual
Tyan S1867
Thunder 2500
(Preliminary)
Motherboard Users Manual
Revision 1.00
Copyright © Tyan Computer Corporation, 2000. All rights reserved. No part of this
manual may be reproduced or translated without prior written consent from Tyan
Computer Corp.
All registered and unregistered trademarks and company names contained in this
manual are property of their respective companies including, but not limited to the
following.
Pheonix is a trademark of Pheonix Corporation.
Windows is a trademark of Microsoft Corporation.
IBM, PC, AT, PS/2 are trademarks of IBM Corporation.
INTEL, Pentium II/III, Celeron are trademarks of Intel Corporation.
ServerWorks and ServerSet are trademarks of ServerWorks Corporation.
S1867 Thunder 2500 is a trademark of TYAN Computer Corporation.
Information contained in this publication has been carefully checked for accuracy and
reliability. In no event will Tyan Computer be held liable for any direct or indirect,
incidental or consequential damage, loss of use, loss of data, or other malady resulting
from errors or inaccuracies of information contained in this manual. The information
contained in this document is subject to change without notice.
PRINTED IN USA
Table of Contents
1. Introduction....................................................................................................4
Overview.................................................................................................4
Icons....................................................................................................... 5
Hardware Specifications/Features............................................................. 5
Software Specifications............................................................................7
Technical Support................................................................................... 8
Returning Merchandise for Service.......................................................... 8
2. Board Installation.........................................................................................9
Unpacking.............................................................................................. 9
Installation............................................................................................. 9
Quick Reference for Jumpers................................................................... 11
Map of Motherboard Jumpers..................................................................1 2
Setting Jumpers....................................................................................... 14
Reset CPU Speed and Safe Mode..............................................................1 5
Server Management Connector (External SMI)....................................... 15
Audio Connectors....................................................................................16
Hardware Reset Switch Connector Installation........................................ 17
CMOS RTC............................................................................................. 17
Flash EEPROM....................................................................................... 17
Mounting the Motherboard in the Chassis............................................... 1 8
Installing Memory...................................................................................18
Installing the CPU and Cooling Fan.........................................................2 1
Connecting IDE and Floppy Drives......................................................... 24
Installing Add-on Cards........................................................................... 26
Connecting PS/2, USB, Serial & Parallel Drivers......................................2 7
Connecting the Power Supply..................................................................28
Intel Ethernet Setup and Use................................................................... 29
Creative Labs Sound Drivers Installation Note.........................................39
Frequently Asked Questions.....................................................................3 9
3. BIOS Configuration......................................................................................42
Main Setup.............................................................................................. 44
Advanced Setup....................................................................................... 59
Security Setup......................................................................................... 51
Miscellaneous Setup.................................................................................53
Boot Setup.............................................................................................. 73
Exit Menu Settings.................................................................................. 77
Flash Writer Utility.................................................................................56
System Resources.................................................................................... 56
Beep Codes............................................................................................. 56
Appendix 1 - LSI SymBIOS Ultra2 LVD SCSI............................................ 5 5
Appendix 2 - Glossary ......................................................................................64
Chapter 1
Introduction
chapter 1
Introduction
Overview
The Thunder 2500 is a quality, high performance motherboard designed for Intel Pentium
II and Pentium III microprocessors. This motherboard utilizes the ServerWorks ServerSet
III HE and can support CPU speeds of 450MHz through 933MHz and host bus speeds of
100MHz to 133MHz (please see Tyans website for up-to-date CPU support information).
The motherboard, with built-in AGP Pro slot, provides high performance capabilities that
are ideal for a wide range of demanding applications such as CAD, CAM, CAE, desktop
publishing, 3D animation, and video production.
This integrated high-performance system board is supported in an Extended ATX form
factor. Some of the features included are onboard UltraDMA support, onboard dual
channel Ultra2 SCSI (optional Ultra3 SCSI with LSI Symbios 53C1010 chip), onboard
Creative ES1373 Audio, onboard Intel Ethernet 82559 and onboard high speed I/O,
With I/O and drive controller support built onboard, the one AGP Pro slot, six PCI and
one ISA slots (one shared, seven usable) are free for numerous add-on expansion cards.
Remember to visit TYAN Computers web site at http://www.tyan.com. There you can
find information on all of TYANs products along with FAQs, distributors list, drivers, and
BIOS setting explanations.
http://www.tyan.com
4
Icons
In order to help you navigate this manual and set up your system, we have added several
icons to our format.
This icon alerts you to particularly important details regarding the setup or
maintenance of your system. This icon often appears next to information
!
important!
that may keep you from damaging your board or system. While we will often
point out the most vital paragraphs in a chapter, you should always read
every word in the text. Failing to do so can lead to exasperation and expense.
INTRO
1.
2.
3.
procedure
warning
Wherever possible, we have included step-by-step instructions for setting up
your system, which are indicated by this icon. However, it is in your best
interest to read an entire section (and perhaps the entire manual) before you
begin to fiddle with your motherboard.
While we have alerted you to potential dangers in several places in the
manual with this icon, these warnings should not be regarded as the whole of
your safety regimen. Never forget that computers are electrical devices, and
are capable of delivering a shock. Prevent damage to yourself and to your
board: always ensure that your system is turned off and unplugged whenever
you are working with it, and that you are equipped with a static safety device.
Thunder 2500 S1867
5
Chapter 1
Introduction
Hardware Specifications/Features
Processor Information • Dual Intel Slot 1
Expansion Slots • One 2x / Pro AGP slot
Chipset Information • ServerWorks ServerSet III HE 4-chip solution
System Management · 2-pin Chassis Intrusion header
(**not verified at time of print · Temperature and voltage monitoring
please see website for updates.) · 3-pin Wake on LAN header
Main Memory • Eight 168-pin Registered DIMM sockets
Integrated Ultra2 or Ultra 160
SCSI (Optional) • Dual Channel Ultra2 LVD SCSI Support
• Pentium III 450 - 933 MHz
• Two on-board VRMs (VRM 8.4 spec)
• Front Side Bus Support for 100 / 133 Mhz
• Four 64-bit/33 MHz PCI slots (5 Volt Only)
• Two 64-bit/66 MHz PCI slots
• One 16-bit ISA slot (shared w/ one PCI)
• One shared, seven usable slots
• SMC 37B787 Super I/O chipset
· 3-pin Wake on Ring header
• Up to 8.0 GB PC100 / PC133 compliant
Registered SDRAM
• Supports ECC (72bit) memory modules
− LSI Symbios SYM53C896 controller
− 80MB/s transfer rate per channel
− Allows up to 30 LVD SCSI devices
− Channel A: One 68-pin connector
− Channel B: One 68-pin connector
•Dual Channel Ultra3 LVD SCSI Support
− LSI Symbios SYM53C1010 controller
− 160MB/s transfer rate per channel
− Allows up to 30 LVD SCSI devices
− Channel A: One 68-pin connector
− Channel B: One 68-pin connector
• A dedicated PCI slot available to support low-cost,
intelligent RAID controller, RAID 0, 1 and 5
(SymBIOS 53C896 only)
Integrated LAN Controller
(Optional) • Intel 82559 LAN controller
• 3-pin Wake on LAN header**
• Optional Alert on LAN II support**
6
http://www.tyan.com
Intergated Audio (Optional) • Creative Labs PCI ES1373 sound
• AC97 CODEC
• Line-in, Line-out, Mic and Game/MIDI ports
• 4-pin CD-ROM audio header (ATAPI)
• 4-pin Video-IN header (ATAPI)
• 4-pin MPEG-IN header (ATAPI)
INTRO
BIOS Information • Pheonix BIOS on 2Mb Flash
Disk Drive & System I/O • Two PCI bus mastering EIDE
• Auto configuration of IDE hard disk types
• Multiple boot options
• DMI 2.0 / PC99 compliant
channels
• Supports EIDE CD-ROMs
• PIO Mode 3 & 4 (up to 16.6 MB/sec DTR)
• UltraDMA mastering mode support
• Support for one floppy drive (Mode
1.44MB supported)
• Two serial ports (16550 UARTs)
• One ECP/EPP parallel port
• Two USB rev 1.1 ports
• One PS/2 mouse port
• One PS/2 keyboard port
Physical Dimensions • Extended ATX footprint (12 x 13)
• Eight layer board
• Two 20-pin ATX power connectors
• Stacked Mouse/Keyboard ports
• Stacked (2) USB/RJ-45 with LED ports
• Stacked Line-In/Line-Out/Mic-In/MIDI ports
Software Specifications
OS • Operates with Windows 98/ SE,
Windows NT 4.0, Windows 2000, Red Hat 6.0/
* See TYAN website for CPU Compatibility List
**NOT verified at time of print, please see website for updates.
Thunder 2500 S1867
6.1, Novell Netware, and SCO Unix.
7
Chapter 1
Introduction
Technical Support
If a problem arises with your system, you should turn to your dealer for help first. Your
system has most likely been configured by them, and they should have the best idea of
what hardware and software your system contains. Hence, they should be of the most
assistance. Further, if you purchased your system from a dealer near you, you can actually
bring your system to them to have it serviced, instead of attempting to do so yourself
(which can have expensive consequences).
Help resources:
1. See FAQ and beep codes sections of this manual.
2. See Tyan web site for FAQ, bulletins, driver updates, etc.
3. Contact your dealer or distributor for help BEFORE calling Tyan.
4. Check the Tyan user group: alt.comp.periphs.mainboard.tyan
http://www.tyan.com
Returning Merchandise for Service
During the warranty period, contact your distributor or system vendor FIRST for any
product problems. This warranty only covers normal customer use and does not cover
damages incurred during shipping or failure due to the alteration, misuse, abuse, or
improper maintenance of products.
For Resellers Only:
A receipt or copy of your invoice marked with the date of purchase is required before any
warranty service can be rendered. You can obtain service by calling the manufacturer for a
Return Merchandise Authorization (RMA) number. The RMA number should be prominently displayed on the outside of the shipping carton and the package should be mailed
prepaid, or hand-carried to the manufacturer. TYAN will pay to have the board shipped
back to you.
http://www.tyan.com
8
chapter 2
Board Installation
Unpacking
The retail motherboard package should contain the following:
• S1867 motherboard
• One IDE and floppy cable pack
• Users manual
• One 3-head Ultra2 SCSI cable w/ terminator (cables with 4 heads or longer must be
ordered separately)
• One 3-head regular SCSI cable
• Two CPU retention modules
• One ATX I/O Shield
• One System Management & Driver CD; includes complete drivers for SCSI, LAN and
audio controllers
• One Driver Diskette for LSI Symbios 53C896 or 53C1010
• One Slot 1 Terminator Card.
Installation
You are now ready to install your motherboard. The mounting hole pattern of the Thunder
2500 matches the Extended ATX system board specifications. Your chassis should be that
of an Extended ATX motherboard form factor.
Thunder 2500 S1867
9
Chapter 2
Board Installation
How to install our products right...the first time.
Whats the first thing I should do?
The first thing you should do is read this users manual. It contains important information
which will make configuration and setup much easier.
Here are some precautions you should follow when installing your motherboard:
1.
2.
3.
procedure
Having reviewed the precautions above, the next step is to take the motherboard out of
the cardboard box and static bag, hold it by its edges, and place it on a grounded antistatic
surface, component side up. Inspect the board for damage.
DO NOT APPLY POWER TO THE BOARD IF IT HAS BEEN DAMAGED!
!
important!
Press down on any of the socket ICs if it appears that they are not properly seated (the
board should still be on an antistatic mat). Do not touch the bottom of the board.
Remember, dont take any electronic device out of its protective bag until you are ready to
actually install it into the computer case. If you do not ground yourself, you risk zapping
the motherboard or adapter card. Subsequent problems may not arise immediately because
electrostatic discharge damage, unlike physical damage, causes the device to fail over time.
(1) Ground yourself properly before removing your motherboard
from the antistatic bag. Unplug the power from your computer
and then touch any metal part on the computer case. (Or wear a
grounded wrist strap.)
(2) Hold the motherboard by its edges and do not touch the bottom of
the board.
(3) Avoid touching motherboard components, IC chips, connectors,
and leads.
(4) Avoid touching pins of memory modules and chips.
(5) Place motherboard on a grounded antistatic surface or on the
antistatic bag.
*Power Supply Requirement: ATX Power Supply should be 2.01 compliant.
Standby current must be 750mA or higher (SB5V = 0.75A)
Installation Steps
1.
1. Set Jumpers / Dip Switch
2.
2. Mount Motherboard in Chassis
3.
3. Install Memory
procedure
4. Install CPU & Cooling Fan
5. Connect IDE and Floppy Drives
6. Install Add-on Cards
7. Connect PS/2, USB, Serial and Parallel Devices
8. Connect Power Supply
10
http://www.tyan.com
Quick References for Jumpers
In this manual, the terms closed and on are used when referring to jumpers (or jumper
pins) that are active; open and off are used when referring to jumpers (or jumper pins)
that are inactive. See the Figure 2-1 for examples of on and off pins and jumpers.
The square pin in the diagram is Pin 1.
Jumpers and pins are connected by slipping the blue plastic jumper connector overtop of
two adjacent jumper pins (indicated by 1-2 or 2-3). The metal rod
inside the plastic shell bridges the gap between the two pins, completing the circuit. See
Figure 2-2 for more examples of pin connections.
The tables and maps on the following pages will help you set the jumpers for CPU speed,
Infrared, and external connector pin assignments, among others. The miniature motherboard
maps will help you locate the jumpers on your board. A full-page map of the motherboard can
be found on the next two pages.
INSTALL
2 pin jumpers
off on
Figure 2-1
3 (or more) pin jumpers
1-2 2-3 open
1
2
3
1
2
3
Figure 2-2
1
2
3
Thunder 2500 S1867
11
Chapter 2
Board Installation
Map of Motherboard Jumpers
Mouse
Keyboard
USB2
USB1/
Ethernet
CPU slot 2 (Slot One type)
FAN5
1
DIMM bank 3
DIMM bank 2
DIMM bank 1
DIMM bank 0
Creative
ES1373
RCC-05B4
Winbond
ATX power supply
ATX power supply
Floppy connector
Secondary IDE connector
Primary IDE connector
Line Out
Line In
MIC
COM1
COM2
Game/
MIDI
Printer Port
1
1
1
1
Intel
82559
LAN
WOL
WOR
AMIBIOS
1
CD IN
(J15)
Video IN
(J14)
MONO IN
(J13)
MPEG IN
(J12)
1
JP9
FAN4
RCC-HE
CPU slot 1 (Slot One type)
JP3
AGP port
PCI slot 1
PCI slot 2
PCI slot 3
PCI slot 4
PCI slot 5
PCI slot 6
ISA slot 1
FAN3
JP1
1
RCC-C10B
3 volt
DIMM bank 3
DIMM bank 2
DIMM bank 1
DIMM bank 0
RCC-
MADP
The tiny 1s next to jumpers of 3 pins or more indicate the position of pin 1 for
that jumper.
Ultra2 SCSI Channel B
Ultra2 SCSI Channel A
LSI
53C896
FAN1
1
J29
1
CMOS
J32
1
JP33
FAN2
J24
1
J27
1
1
1
12
http://www.tyan.com
connectors
ATX Power supply
8 DIMM slots
ServerWorks ServerSet III HE
2 slot 1 connectors
INSTALL
IDE and Floppy
connectors
Ultra2/3 SCSI
channels
Creative
ES1373
AGP PRO port
1 ISA slot
SCSI LSI 53C896
or 53C1010
AMIBIOS
ServerWorks
ServerSet III HE
13
w/ LAN connector
Double row ATX connectors
MIC
Line In/ Out/
Game/MIDI/
Intel 82559 LAN
Super I/O
6 PCI slots/ 1 ISA
Thunder 2500 S1867
Chapter 2
Board Installation
1. Setting Jumpers
1-A. Front Panel Assignment (Jumper J24)
VCC 12 Powe r LE D
HDD LED 34 Sleep LED
Ground 56Powe r On /O ff
Rese t 78 Ground
VCC 910 No Conn e ct
IR Receive 11 12 VCC
Ground 13 14 No Connect
IR Transmit 15 16 VCC
No Connect 17 18 No Connect
J24
12
Top
Bottom
34
56
78
901
1121
3141
5161
7181
Top Pin
Pin17
J24 Side View
Pin1
Bottom Pin
Pin2
*Power LED: For 2-pin: bicolor/single color LED - Use pins 2-4
For 3-pin: bicolor LED - Use Jumper J7
1-B. Front Side Bus Speed Select (Jumper JP1)
0+ ] 0+ ]
-3 &ORVHG 2SHQ
Jumper JP1 selects the Front Side Bus speed. When JP1 is closed, the FSB will run at 100
MHz only. Open jumper JP1 to allow both 133MHz and 100 MHz FSB support.
http://www.tyan.com
14
1-C. Spread Spectrum Enable/Disable (JP3)
(QDEOH G 'LVD EOH G
-3 &ORV H G 2SHQ
This jumper Enables/Disables the Spread Spectrum setting. With this setting enabled, it
reduces the amount of EMI emitted.
1-D. Reset CPU Speed and Safe Mode (Jumper J29)
'HI DXOW 5HVHW
- 2 SH Q &ORV H G
If you have been locked out of your system because you forgot your password or set the
CMOS incorrectly, follow the instructions below.
1. Power off the system
2. Close Juimper J29 (see page 12 for location of J29)
3. Power on the system, wait for at least 3 seconds, then power down
4. Open Jumper J29, then power on the system again.
By following this procedure, you will erase your password and reset CPU Speed.
1-E. Speaker Connector (Jumper J27)
The speaker should be connected to Jumper J27. As default, Jumper J27 closes pin 1 and 2
for use with the internal buzzer. Remove the jumper on pin 1 and 2 to connect an external
buzzer. The external buzzer must be a 4-pin header connecting to J27 from pin1 through
pin 4.
1-F. Wake-On Ring Connector (CON6)*
3LQ
96% *URXQG :25
* WOR connector at the time of print has not been tested.
1-G. Wake-On LAN Connector (CON5)*
3LQ
9 6% *URX QG :2/
INSTALL
1-H. Server Management Connector (J32)*
The EXTSMI (External System Management Interface) connector, jumper J38, is used by
some plug-in cards. Certain applications associated with these plug-in cards use the
interface for hardware control and queries.
*NOT verified at time of print, please see website for updates.
Thunder 2500 S1867
15
Chapter 2
Board Installation
1-J. Fan1, Fan2, Fan3, Fan4, Fan5 - Pinout
- Fan3 connector corresponds to CPU 1 slot.
- Fan4 connector corresponds to CPU 2 slot.
- Fan1 / Fan2 are Chassis Fans
- Fan5 is an Auxhilary CPU fan header
Note: With Intels LANDesk system monitoring software, only two fans can be monitored at one time.
When using Intels LANDesk system management software, you may monitor the status
of the CPU Fans by connecting them to the Fan3 and/or Fan4 connectors. You will NOT
be able to monitor your CPU fan with the other Fan connectors.
1-L. Audio Connectors (J12, J13, J14, J15)
There are four black 4-pin connectors onboard which are used for various peripherals
audio signals. The digital signal that comes in through these connectors is directed through
the Ensoniq 1373 PCI sound Chip, and the digital signal is turned into an audio signal
which goes out through the speaker. The MPEG connector (J12) is for DVD cards, the
Mono connector (J13) is for Auxhilary audio inputs; the Video connector (J14) is for TV
cards and the CD-IN connector (J15) is for CD-ROMs.
1-M Enable/Disable LAN (JP9)
This jumper allows you to enable the onboard LAN function. Default is enabled (open).
(QDEOH 'LVDEOH
-32SHQ&ORVHG
1-N. Frontside USB Header (J33)*
Certain computer chassis allow for a front-end USB port connection. Therefore, this
board provides a front side USB header should you decide to set up a USB connector at the
front side of your computer.
Note: If you use J33, you will be unable to use the TOP USB port at the back of
!
the motherboard. Both J33 and USB1 share the same channel.
important!
Hardware Reset Switch Connector Installation
The Reset switch on your cases display panel provides you with the Hardware Reset
function, which is the same as power on/off. The system will do a cold start after the Reset
button is pushed.
CMOS RTC
The Real Time Clock (RTC) circuit, which provides the date and time for the system is
integrated into the ServerWorks ServerSet III HE chipset. If the external battery for the
RTC is low, you will most likely lose your BIOS settings. Normally the life span of an
external battery is 2 years. If yours is running low, you will need to replace it with a new
3V lithium battery (CR2032).
*NOT verified at time of print, please see website for updates.
16
http://www.tyan.com
Flash EEPROM
The Thunder 2500 uses flash memory to store BIOS firmware. It can be updated as new
versions of the BIOS become available. You can upgrade your BIOS easily using the flash
utility (see page 56).
INSTALL
Thunder 2500 S1867
17
Chapter 2
Board Installation
2. Mounting the Motherboard in the Chassis
Follow the instructions provided by the case manufacturer for proper installation
guidelines. TYAN recommends that you make use of all mounting holes to screw down the
motherboard. The adapter cards and the screws holding them down will keep your board
flat. The fastening screw should not short any of the traces on the motherboard. Make
certain that you do not overtighten the screw, as it will damage the motherboard and
possibly break internal traces in the surrounding area. The hole you should use is located at
the top-center of the board where the adapter cards are fastened to the case.
3. Installing Memory
Since TYAN boards are manufactured with performance in mind, you should use add-in
components that match. Some DIMM modules may seem to be high quality because of
name or feel but that does not guarantee real-world usability. Some cheaper or OEM
memory may have brand-name components, but they may contain inferior or substandard
parts which do not meet the critical tolerances our products require. Because of this, your
memory may not work correctly in a TYAN board though it may work well in a
competitors board. This is because many of our competitors do not adhere to the strict
tolerances required for high performance. If you buy a TYAN board, you are getting the
best system available. To make installation easy and trouble free, get high quality parts.
For a list of recommended memory vendors, please visit Tyans website at www.tyan.com go to the Memory Support area in the Support Section. The website memory compatibility lists include DIMMs that have proven to be very stable on our boards and perform
extremely well.
ATTENTION! ONLY REGISTERED DIMMs MAY BE USED ON
THUNDER 2500
Figure 2-3
http://www.tyan.com
18
To install your DIMMs, line your module up so that the pins fit into the slot. There is
only one way that your DIMM can fit properly. Make sure that the short row of pins is
lined up with the short gap in the DIMM slot. Figure 2-3 to the previous page shows how
to sit the DIMM into its slot. To insert the DIMM, push down vertically on the module
with even force, as shown in the photo. Do not shove one end in first; doing so will bend
the DIMM pins.
To lock the DIMM into place, push the plastic clips on either end of the slot onto the
notches at the ends of the DIMM (see Figure 2-4 below). In some cases, pushing the
memory module into the DIMM slot will move the plastic clips inward, automatically
locking the module into place. To remove your DIMM, simply pull the clips back, and
pull up on the module.
Place the DIMMs in an antistatic bag as soon as you remove them to avoid
static damage.
INSTALL
!
important!
Figure 2-4
The Thunder 2500 uses a 64-bit data path from memory to CPU and can accommodate up
to 8 GB of SDRAM. The 168-pin DIMMs (Dual In-line Memory Modules) must be of the
3.3V, buffered variety. The position of the notch in the SDRAM key position will tell
you whether or not a DIMM is buffered (see the Figure 2-5 on the following page). All
installed memory will be automatically detected, so there is no need to set any jumpers.
ATTENTION! ONLY REGISTERED DIMMs MAY BE USED ON
THUNDER 2500
Thunder 2500 S1867
19
Chapter 2
Board Installation
EEPROM
RFU
Unbuffered
Buffered
Figure 2-5a
Some details of memory installation:
The mainboard supports registered 64MB, 128MB, 256MB, 512MB memory
modules; and supports 1024MB registered SDRAM DIMM modules.
PC100 / PC133 DIMMs may be used
The board supports registered memory chips ONLY. DO NOT mix registered and
non-registered memory chips on the motherboard. Memory modules must be of the
same brand and variety. DO NOT use different memory modules at the same time.
!
Attention: Due to specific memory population, the DIMM modules must be
important!
inserted as pairs. In order for the board to Post please install the DIMMs in the
combination shown below. All DIMM modules must be the same size and they
must be Registered DIMMs. See table below and Figure 2-5b for details.
1R R I',0 0 6 ',0 0 %$ 1.FRPELQDWLRQ
DQG
DQGDQG
DQGDQGDQG
DQGDQ G DQGDQG
See www.tyan.com for latest memory compatibility information.
1
FAN5
DIMM bank 0
DIMM bank 1
DIMM bank 2
DIMM bank 3
DIMM bank 3
Figure 2-5b
20
DIMM bank 0
DIMM bank 1
DIMM bank 2
ATX power supply
http://www.tyan.com
4. Installing the CPU and Cooling Fan
Pentium II or Pentium III processors can be used on the Thunder 2500. Please refer to pages
14-17 for the correct CPU jumper settings for your board. Remember:
• The CPU is a sensitive electronic component and it can easily be damaged by static
electricity. Do not touch the CPU pins with your fingers.
• Before the CPU is installed, the motherboard must be placed on a
flat surface. You should be able to insert the CPU with minimal, but
firm pressure. Do not press down hard on the CPU.
With CPUs reaching much higher clock frequencies, much more effecient cooling methods
must be used to prevent the CPU from overheating. The cooling fan is an important
component that is commonly neglected. Currently, one type of cooling mechanism is
produced for Pentium II / III processors. The active cooler is equipped with a cooling fan
and heatsink, allowing better air flow as well as heat dissipation for the CPU. (See Figure 26 below) The type of cooler used has no effect on performance, as long as the CPU fan is
properly connected to the CPU fan header on the motherboard.
Figure 2-6
Figure 2-7 below shows an overhead view of the retention braces positioned at both ends of
the CPU slot. Be sure to tighten the retention brace screws to secure them onto the
motherboard. The terminator card must be inserted into the vacant slot if only one CPU
is used.
INSTALL
Terminator Card
Thunder 2500 S1867
Figure 2-7
21
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