A-Trend 6253M User manual

6253M Mainboard Contents
CONTENTS
COMPONENT LOCATION DIAGRAM………………..…....................…A
CHECK LIST OF THE PACKAGING…………..………............…......…..B
CONNECTORS DESCRIPTION ……………………….….…................... C
TABLE OF CONTENTS………………………………….....….....................1
HOW TO USE THIS MANUAL……………….………….…...................….2
CH
APTER 1 Introdu tion……………………………..…...…...3
1-1 System Features (in English, German, French, Spanish,Italian)......3
1-2 Soft are Po er Off Control.............................................................9
1-3 Fan Off Control................................................................................9
1-4 Running 100MHz CPU Bus (JP11)...............................................10
1-5 Keyboard & PS/2 Mouse Po er On (JP9).....................................11
1-6 Wake-On-LAN ..............................................................................12
1-7 Thermister (optional).....................................................................12
1-8 LDCM ( LANDesk Client Manager, optional).............................13
CHAPTER 2 Installation...............................................................14
2-1 Installation Procedure ...................................................................14
2-2 CPU Installation............................................................................14
2-2-1 Core/Bus Freq. Ratio…………………………………….…….14
2-2-2 CPU Setting……………………………………………………15
2-3 System Memory Installation.........................................................16
2-4 IDE Driver Installation..................................................................17
2-5 Sound Driver Installation..............................................................17
2-6 VGA Driver Installation................................................................18
2-7 Hard are Doctor Installation........................................................18
CHAPTER 3 Award BIOS Setup..................................................19
3-1 Update BIOS Procedure.................................................................20
3-1-2 Update Microcode API...............................................................21
3-2 A ard System BIOS Configuration Setup....................................22
Standard CMOS Setup ..............................................................................23
BIOS Features Setup .................................................................................26
Chipset Features Setup ..............................................................................30
Po er Management Setup .........................................................................34
PNP/PCI Configuration .............................................................................37
Integrated Peripherals ................................................................................39
IDE HDD Autodetection ...........................................................................42
Load BIOS Defaults, Load Setup Defaults, Pass ord Setup ...................43
Appendix A How to Install PentiumII/III、and Celeron
Appendix B How to Setup Thermister (optional)
Appendix C Te hni al Support Request Form
1

How To Use This Manual 6253M Mainboard
HOW TO USE THIS MANUAL
This manual is written in a user-friendly style. It would e advisa le for users to
read it in an orderly sequence :
1. For Hardware Information:
Read Page A: COMPONENT LOCATION DIAGRAM, Page B: CHECK LIST OF THE PACKAGING
and Page C: CONNECTORS DESCRIPTION.
2. For Mainboard and System Features:
Read “Chapter 1 Introdu tion” in detail, and you ill find helpful information on mainboard and system
features. Especially, hen you ant to do some feature setup, detailed instructions are provided therein to help
you through.
3. For CPU, Memory and Drivers Installation:
Read “Chapter 2 Installation” for your CPU, memory and application drivers installation. Detailed instructions
are provided to guide all kinds of users.
4. For BIOS Update and Setup:
Read “Chapter 3 Award BIOS Setup” for updating your mainboard BIOS and setting up your BIOS
Configuration.
5. For Installing PentiumII/III, Celeron or Pro essors with SECC2 Pa kage:
Read APPENDIX A for setting up Intel PentiumIII, PentiumII, CeleronTM, or processors ith SECC2
package.
6. For Installing Thermister:
Read APPENDIX B for thermister installation. You ill find that the self-explanatory dra ings enclosed
therein make the job easy and simple.
7. For other Te hni al Support:
Read APPENDIX C, fill and send the Request Form to your dealer for other technical support.
The default setting on a mainboard is not necessarily hat user expects. A user-friendly manual ould be the
handiest assistant to help change the on-board configuration or default setting. In case this manual cannot solve
all your problems, please ask your dealer for help and be sure the arranty on your system is still valid.
REMARK: Intel® is a registered trademark of Intel Corporation.
All other brands and product names are registered trademarks of their respective companies.
2

6253M Mainboard Chapter 1 Introduction
CHAPTER 1 INTRODUCTION
Welcome to use 6253M mainboard, the Intel 443BX chipset supporting both
66MHz and 100MHz Front Side Bus PentiumII/III CPU. It also has the built-in
Yamaha YMF 740 3D PCI sound chip and Voodoo3 VGA chip. The Yamaha YMF
740 sound chip is using PCI interface hich allo s your computer to perform 3D
stereo sound. And the Voodoo3 3D VGA chip orking ith AGP interface technique
allo s users to have 2D/3D display resolution ithout adding a VGA card.
1.1 System Features
CPU Slot supporting Intel PentiumIII CPU 450Mhz to 550MHz, PentiumII
CPU 233MHz to 450MHz and Intel Celeron CPU 266MHz to 466MHz.
Intel 443BX PCIset.
Yamaha YMF 740 3D PCI Sound Chip.
Onboard 3Dfx Voodoo3 ith onboard 16MB SDRAM.
Four 168-pin DIMM Sockets in four banks of 64-bit ide path up to 512MB
SDRAM or 1GB registered SDRAM ( ith parity chip ECC support).
Built-in S itching Voltage Regulator.(VRM 8.2 SPEC.)
Auto-detect CPU core voltage range from 1.3V to 3.5V.
T o16-bit ISA slots and four PCI slots compliance ith version 2.2 of the PCI
Local Bus specification.
Dual Master IDE connectors support Ultra DMA/33 (33MB/sec), up to four
devices in t o channels for connecting high capacity hard disk, CD-ROM, LS-
120MB floppy drive, tape backup etc.
Winbond 83977 high-speed Ultra Multi-I/O chipset.
USB (Universal Serial Bus) Connector supporting up to 127 peripheral devices.
PS/2 Keyboard Connector and PS/2 Mouse Connector.
Infrared Transfer (IrDA TX/RX) Connector.
One FDD Port supporting t o devices available for 1.2MB, 1.44MB and 2.88MB.
T o 16550A fast UARTs compatible Serial Ports.
One EPP/ECP mode Parallel Printer Port.
Soft are Po er Off Control; Modem Ring On; Keyboard & PS/2 Po er On;
Wake-On-LAN functions.
Built-in Hard are Health Monitor chip. (optional)
Intel LDCM soft are. (optional)
ATX Form Factor; Hard are Dimension is 301mm x 220mm. (11.85" x 8.66")

Chapter 1 Introduction 6253M Mainboard
1-1 Systemmerkmale (German)
CPU Slot unterstützt Intel Pentium III CPU 450MHz zu 550MHz,
Pentium II CPU 233MHz zu 450MHz und Inetl Celeron
CPU 266MHz zu 466MHz .
Intel 443BX PCIset .
YAMAHA YMF 740 dreidimensional PCI Sound Chip .
An Board dreidimesional fx Voodoo3 mit 32MB SDRAM .
Vier 168-pin DIMM Sockets in vier Banks für 64-bit Breit
ausgedehnte Bahn hoch bis zu 512MB SDRAM oder 1GB
registriend SDram ( mit ECC Chip in Gleichheit unterstützt ).
Built-in schaltet den Voltageregulator .( VRM 8.2 SPEC )
Selbstnach eisend CPU Kernvoltage variiert z ischen 1.3V und
3.5V .
Z ei 16-bit ISA Slots und vier PCI Slots sind Wünschen gemäß der Umkehrung
2.2 für PCI Lokalbus in Spezifizierung .
Dual Master IDE Anschließstück unterstützen Ultra DMA/33
(3MB/sec ), hoch bis zu vier Vorrichtungen in z ei Kanälen ,
das Einsetzten der Hardscheibe ist in hoherAufnahmfäigkeit,
CD-Rom, LS-120MB Soft aredrive , Tapereserven etc.
Winbond 83977 hohe-Tempi Ultra multi-I/O Chipset .
USB (universale Seriennummer-Bus ) Anschlußstück ird Randverrichtung hoch
bis zu 127 untergestützt .
PS/2 Keyboard Anschlußstück und PS/2 Mouse Anschlußstück .
Übertragend(IrDA TX/RX) Anschlußstück .
One FDD Schließloch unterstützt z ei ver endbare Vorrichtungen
für 1.2MB , 1.44MB und 2.88MB.
Z ei 16550A rapide UARTs vertragende Seriennummer der
Schließlöchern .
Ein EPP/ECP Model mit parallelem Printerschließloch .
Abschalten zu Soft are ist kontrolliertbar ; Modem mit Signalklang ; Keyboad
und PS/2 Einschalten ;
Wake-On-LAN Funktion .
Konstruktion -in Hard are mit gesundheitlichem Monitor Chip.
( freigestellt)
Intel LDCM Soft are .( freigestellt)
ATX Form Faktor ; Hard are Dimension ist 301mm x 220mm.
(11.85" x 8.66")

1-1 Cara téristiques du Système (Fren h)
Socle CPU supportant un CPU d'Intel Pentium®III 450Mhz à 550Mhz, un CPU
d'Intel Pentium®II 233Mhz à 450Mhz et un CPU d'Intel Celeron™ 266Mhz à
466Mhz.
Puce Intel 443BX PCIset.
Puce sonore YMF 740 3D PCI de YAMAHA.
3 Dfx Voodoo3 Sur Carte avec 32MB de SDRAM Sur Carte.
Quatre Socles DIMM 168-broches dans quatre banques d'une piste de 64-bit sur
512MB de SDRAM ou 1GB de SDRAM enregistrée ( avec support ECC de puce
par paire ).
Régulateur de voltage interchangeant incorporé ( VRM 8.2 SPEC ).
Gamme du voltage détecté par le CPU de 1,3V à 3,5V.
Deux socles ISA 16-bit et quatre socles PCI conformes avec l'inversion 2.2 des
spécifications du Bus PCI Local.
Double connecteurs maîtres IDE avec support d'Ultra DMA/33 ( 33MB/sec.) sur
quatre périphériques dans deux chaînes pour connecter un disque dur de grande
capacité, un lecteur de CD-ROM, de disquette LS-120MB, une machine pour
copie de secours, etc.
Jeu de puces Ultra Multi-I/O haute vitesse Winbond 83977.
Connecteur USB ( Bus Sériel Universel ) supportant plus de 127 périphériques.
Commecteur de clavier PS/2 et connecteur de souris PS/2.
Connecteur de transfert d'infrarouge ( IrDA TX/RX ).
Un port FDD supportant deux périphériques disponibles pour 1,2MB, 1,44MB et
2,88MB.
Deux ports sériels compatibles 16550A fast UARTs.
Un Port d'Imprimante Parllèle mode EPP/ECP.
Logiciel de contrôle d'arrêt; Sonnerie de modem; Clavier & PS/2 Marche;
Fonctions LAN de Réveil.
Puce d'état du moniteur et du matériel ( optionnelle ).
Logiciel Intel LDCM ( optionnel ).
Facteur de Forme ATX; dimensions du matériel: 301mm x 220mm ( 11.85" x
8.66" ).

Chapter 1 Introduction 6253M Mainboard
1-1 Cara terísti as del Sistema (Spanish)
Ranura CPU soporta Intel Pentium®III CPU 450Mhz a 550Mhz, Pentium®II
CPU 233Mhz a 450Mhz e Intel CeleronTM CPU 266Mhz a 466Mhz.
Intel 443BX PCIset.
Chip de sonido Yamaha YMF 740 3D PCI
3Dfx Voodoo3 abordo con 32MB SDRAM abordo
Cuatro Casquillos 168-pin DIMM en cuatro bancos de 64-bit camino ancho hasta
512MB SDRAM o 1GB registrado SDRAM (con soporte de chip de paridad
ECC)
Regulador de Voltaje Incorporado (VRM 8.2 SPEC.)
Autodetección de rango de voltaje central de CUP de 1.3V a 3.5V
Dos ranuras 16-bit ISA y cuatro ranuras PCI conforme a la reversión 2.2 de la
especificación de PCI Local Bus
Conectores IDE Master Duales soportan Ultra DMA/33 (33MB/seg.), hasta cuatro
dispositivos en dos canales para conectar disco rígido de alta capacidad, CD-
ROM, lector de floppy LS-120MB, respaldo de cinta, etc.
Chipset Ultra Multi-I/O de alta velocidad Winbond 83977.
Conector USB (Bus Serial Universal) que soporta hasta 127 dispositivos
periféricos.
Conector de Teclado PS/2 y Conector de Ratón PS/2.
Conector de Transferencia Infrarroja (IrDA TX/RX).
Un puerto FDD que soporta dos dispositivos disponibles para 1.2MB, 1.33MB y
2.88MB.
Dos Puertos Seriales 16550A fast UARTs compatibles.
Un Puerto de Impresora Paralelo en modalidad EPP/ECP.
Control de Apagado en Soft are; Encendido de Módem; Teclado & Encendido
PS/2; Despertar en LAN.
Chip de Monitor de Salud de Hard are incorporado, (opcional)
Soft are Intel LDCM, (opcional)
Factor de Forma ATX; Dimensión de Hard are es 301mm x 220mm (11.85” x
8.66”)

1-1 Caratteristi he del Sistema (Italian)
La slot CPU supporta micro-processori Intel Pentium III Cpu da 450 Mhz a 550
Mhz, Pentium II CPU da 233 Mhz a 450 Mhz ed Intel Celeron CPU da 266 Mhz a
466 Mhz.
Set Intel 443BX PCI.
PCI Chip suono Yamaha YMF 740 3D.
3Dfx Vodoo3 caricato con 32MB SDRAM caricate.
Quattro prese DIMM a 168 pin, a disposizione quadrupla, con 64 bit di ampiezza
fino a 512MB SDRAM oppure 1GB registrato SDRAM (con chip parità supporto
ECC).
Regolatore Voltaggio Aggiustabile internamente costruito (VRM 8.2 SPEC.)
Auto-lettura voltaggio interno CPU con ampiezza da 1.3V a 3.5V.
Due prese ISA da 16-bit e quattro prese PCI conformi a reversione 2.2 della
specifica di PC Local Bus.
Connettori Dual Master IDE supportanti Ultra DMA/33 (33 MB/sec), fino a due
dispositivi in due canali per la connessione di hard disk ad alta capacità, CD-
ROM, floppy drive LS-120 MB, backup di nastro, ecc.
Winbond 83977 alta velocità Ultra Multi-I/O chipset.
Connettore USB (Universal Serial Bus = Bus Seriale Universale) in grado
disupportare un massimo di a 127 dispositivi periferici.
Connettore Tastiera PS/2 e Connettore Mouse PS/2.
Connettore Transfer Infrarossi (IrDA TX/RX).
Un porto FDD che supporta due dispositivi disponibile per 1.2MB, 1.44MB e
2.88MB.
Due Porti Seriali compatibili con 16550A fast UARTs
Un porto con mode EPP/ECP Stampante Parallela.
Dispositivo controllo spegnimento soft are; accensione suono Modem;
accensione tastiera e PS/2; funzioni Wake-On-LAN.
Chip per controllo di condizione dell’ Hard are (Hard are Health Control -
opzionale).
Soft are Intel LDCM (opzionale).
Fattore Forma ATX; le dimensioni dell’ hard are sono 301mm x 220mm (11.85”
x 8.66”).

Chapter 1 Introduction 6253M Mainboard
Voodoo III – 2000/3000 Features
Fully integrated 128-bit
VGA/2D/3D/Video accelerator
True Multi-exturing-2 textures/ clock
3Dfx Voodoo compatibility.
2X AGP ith sidebands.
DVD Acceleration.
Digital video output for NTSC, PAL and SECAM TV-out support.
Digital LCD support (LCDfxTM)
DirectX 6, Open GL, Glide 2.x/3.x support.
0.25 Micron, 5-layer metal CMOS technology.
2000: 4 million triangles/sec., 250 Megatexels/sec.
3000: >7 million triangles/sec., > 366 Megatexels/sec.
2000: 300MHz RAMDAC, 2048x1536@65Hz.
3000: 350MHz RAMDAC, 2048x1536@75Hz.
2000: 125MHz Core Graphics Clock
3000: 183MHz Core Graphics Clock
Audio Features
True Full Duplex Playback and Capture ith different Sampling Rate
Maximum 32-voice XG capital Wavetable
Synthesizer including GM compatibility
DirectSound Hard are Acceleration
DirectMusic Hard are Acceleration
Do nloadable Sound (DLS) level-1
Genuine OPL3
Hard are Sound Blaster Pro compatibility
Joystick
Supporting Distributed DMA for legacy DMAC (8237) emulation
Supporting Serialized IRQ
Supporting AC-21 Interface (AC-Link)
Single Crystal operation (24.576MHz)
5V Po er supply for I/O; 3.3V Po er supply for Internal core logic

1-2 Software Power Off Control
The mainboard design supports Soft are Po er Off Control feature through the
SMM code in the BIOS under Windo s 95/98, and MS-DOS operation system
environment.
First, you should connect the po er s itch cable to the connector “PS-ON” on the
mainboard. In the BIOS screen of POWER MANAGEMENT SETUP’, choose “User
Define” (or “Min. Po er Saving” or “Max. Po er Saving”) in ‘Po er Manager’ and
pick up “Yes” in ‘PM Control by APM’.
In Windo s 95/98, if you ould like to po er off the system, you just need to
choose “shutdo n the computer ?” in the “Shut Do n Windo s“ from Windo s
95/98. Then the system po er ill be off directly, and stay at the stand-by status. If
you ould like to restart the system, just press the po er s itch button, and the
system ill be po ered on.
Note : If you are going to leave your system idle for several days, we suggest you
use hardware power off to shutdown your system.
Status Power LED Light Turbo LED Light
Soft are po er off
control
Blinking (JP5, pin1-2)
Light off (JP5, pin2-3)
Light off
APM mode Light on Light on
System running Light on Light on
* Under Soft are po er off control, the status of Po er LED Light depends on the setting of JP5.
If you set JP5 to “pin1-2” position, it is blinking. Other ise, it is light off.
1-3 Fan Off Control
With fan-off function, the CPU cooling fan can turn off automatically even hen
the system is in suspend mode. This function is able to reduce energy consumption
and system noise.
Because it is a feature of advanced BIOS, you should set this option enabled
through “Po er Management Setup” from the BIOS setup screen.

Chapter 1 Introduction 6253M Mainboard
1-4 Running 100 MHz CPU Bus (with JP11)
The mainboard provides Jumper 11 that allo s you to set your CPU host clock and
perform CPU overclock function. There are t o ays to set CPU host clock at
‘closed’ and ‘open’. When setting ‘closed’, the system ill automatically detect the
CPU host clock, for instance 66MHz and 100MHz. Another ay is to set Jumper 11
at ‘open’ for 66MHz CPU overclock to 100MHz.
We recommend that users should use Intel PentiumII/III 100 MHz CPU, running at
350, 400, 450 and 500MHz internal clock speed. Moreover, the SDRAM memory
module must be 8 nano-second (Maximum Frequency 125 MHz) speed of memory –
die or less. Ho ever, based on Intel’s design, e don’t recommend users to run over
100MHz CPU host bus.
Please note that the default setting of Jumper 11 is ‘ losed’.
Jumper 11 BASE CLK
Closed Auto (default)/PIII 550MHz up
Open Over lo k (66MHz100MHz)
(a) Pin Closed (b) Pin Open
Slot 1
JP11
If you would like to run over 100MHz CPU host bus, like 112 and 124MHz,
please set “CPU Clo k Frequen y” in “CHIPSET FEATURES SETUP” from
the BIOS setup s reen. If the system an’t boot up with the lo k frequen y
that you set to, you an lear the set frequen y by pressing the ‘Insert” key on
keyboard. After restarting the system, you have the system operating at the
default frequen y.

1-5 Keyboard & PS/2 Mouse Power On (with JP9)
With ATX Po er Supply and Jumper 9 set to Pin 1-2 closed, 6253M Mainboard is
enabled to Keyboard & PS/2 Mouse Po er On functions :
JP 9 KB & PS/2 Mouse Power On
1-2 Enabled
2-3 Disabled
(a) Enable (1-2 losed) (b) Disable (2-3 losed) (Also see Component Lo ation Diagram)
The default Wake Up function is “Button Only”. That means, e can only turn our
computer on and off by pressing the “Po er Button”. If e ant to enable KB & PS/2
Mouse Po er On function, e first have to set JP9 to Pin 1-2 closed, and then go to
“Po er On Function” in “Integrated Peripherals” of A ard BIOS Setup. At the line
“Po er On Function”, e can press “Page Up” or Page Do n” to make the follo ing
selections:
1. Password(via Keyboard):
When user selects “Pass ord”, it ill sho “Enter Pass ord:”. After user has
typed the pass ord, screen ill sho “ Confirm Pass ord:” and user has to type
the same pass ord to confirm it. Save selection and shut do n system. No
computer ill only be po ered on by entering correct pass ord.
In case the set pass ord is forgotten, carry out “Clear CMOS” (Page 14) to clear
pass ord, or computer can not be po ered on.
2. Hot Key (via Keyboard):
When user selects this option, screen ill sho another line : “Hot Key Po er ON :
Ctrl-F1”. User can select from “Ctrl-F1” to “Ctrl-F12” as Hot Key by pressing
PageUp / PageDo n. After fixing Hot Key, save selection and shut do n system.
No computer ill only be po ered on by pressing the correct Hot Key.
3. Mouse Left, Mouse Right (via PS/2 Mouse):
This function is available via PS/2 mouse only. User can select either “Mouse Left”
or “Mouse Right” from the “Po er On Function” line. After picking either option,
save selection and shut do n system. No computer ill only be po ered on by
double-clicking the correct PS/2 Mouse button.
Do not slide the mouse when you li k; or you an’t power on the system.
4. Button Only (via Power Button): “Button Only” is default setting, at hich
computer can only be on/off via Po er Button.
1-6 Wake-On-LAN

Chapter 1 Introduction 6253M Mainboard
The remote Wake-On-LAN(WOL) mechanism is built on 6253M Mainboard
Advanced Micro Device Magic Packet technology to po er up a sleeping orkstation
on the net ork. This mechanism is accomplished ith a LAN card hich should also
be built ith “WOL” and connected to 6253M Mainboard. When main system
po er is off , leaving 5V po er through the ATX po er supply, the LAN card
remains at the “Wake-on-LAN” mode.
LAN Card built ith “WOL” monitors the net ork for receipt of a Magic Packet sent
from the server. If a Magic Packet is addressed to the LAN card on the net ork, the
LAN card ake up the system. If the “Secure ON” feature is set up in BIOS, a
pass ord is needed to verify the Magic Packet prior to aking up the system.
“WOL” LAN Card should provide a 3-pin cable to connect itself to the
mainboard.
CAUTION :
To implement Wake-on-LAN, the standby po er supply should be capable of
delivering +5V ±5% ith 720mA.
To locate “WOL” connector, please see “Component Lo ation Diagram.”.
1-7 Thermister (optional)
If Hard are Monitor is built onboard, CPU temperature can be monitored by
setting up the Thermister.
When setting up the thermister (refer to Appendix B), the BIOS ill load the CPU
temperature automatically. A arning beep sound ill be sent out if the user set the
option on. If the CPU is overheated, the user ill get the arning. Then you should
shut do n computer and check your devices. Or contact you dealer for further help if
CPU temperature persists.
Note: If you would like to enable the fun tion of hardware monitor, to set up
thermister beforehand is ne essary. RT2 is the thermister onne tor.

1-8 LDCM （LANDesk Client Manager）(optional)
The mainboard built-in controller supports Intel LDCM. LDCM can satisfy users
ho ant manageable systems that can interact automatically ith the user. Client
manager is the ans er, enabling both administrators and clients to manage systems.
The features of LDCM are as follo ing :
※View system inventory
Client Manager enables you to vie hundreds of inventoried items. Some of these
items are soft are related, hile many others are hard are related.
※View DMI- ompliant omponent information
Client manager enables you to vie component information that is compliant ith the
Desktop Manager Interface （DMI ）. This means you can manage third-party
DMI-compliant components hich did not include Client manager.
※Ba k up and restore system onfiguration files.
Client Manager enables you back up and restore system configuration files. Whenever
you plan on changing the system configuration , you can make a backup set. If the
system no longer orks correctly, after you the change the system configuration ,
you can simply restore the system configuration ith the backup set.
※Troubleshoot
Since Client manager enables you to vie the system inventory, you can easily
troubleshoot system problems.
※Re eive notifi ations for system events
Client manager enables you to receive notification of certain system events. For
example, if the system is running lo on virtual memory, you are notified of the
potential problem.
※Transfer files to and from lient workstations
As an administrator, you have the ability to transfer files to and from client
orkstation. This is helpful, for example, hen you need to update a client
orkstation driver.
※Remotely reboot lient workstations
Administrator also have the ability to remotely reboot a orkstation. This is helpful
hen you ant your system configuration changes to take effect.

Chapter 2 Installation 6253M Mainboard
CHAPTER 2 INSTALLATION
2-1 INSTALLATION PROCEDURE
Before installing the computer, please prepare all components such as CPU, DRAM;
peripherals such as hard disk, keyboard, CD-ROM and accessories such as cables.
Then, install the system as follo ing:
 Plug CPU/ heat sink (refer to PentiumII/III & CeleronTM installation
guide, Appendix A), and DRAM modules on the mainboard.
 Set DIP s itch & jumpers based on your configuration.
 Plug add-on cards into PCI/ISA slots, if needed.
 Connect cables to peripheral devices, especially for po er supply.
 Make sure all components and devices are ell connected, turn on the
po er and setup System BIOS based on your configuration.
Install peripheral devices, add-on card drivers and test them.
 If all of above procedures are running successfully, turn the po er off
and scre the chassis cover to the chassis, and then connect external
devices hich are cabled to the system.
2-2 CPU INSTALLATION
The mainboard has built-in VID (Voltage Identify) function to automatically detect
CPU voltages. Thus you do not have to set the CPU voltage setting.
2-2-1 CPU Core/Bus Freq. Ratio :
SW1
1-1
1-2
1-3
1-4
3.0x
ON
ON
OFF
OFF
3.5x
ON
ON
ON
OFF
4.0x
OFF
OFF
OFF
OFF
4.5x
OFF
OFF
ON
OFF
5.0x
OFF
ON
OFF
OFF
5.5x
OFF
ON
ON
OFF
6.0x
ON
OFF
OFF
ON
6.5x
ON
OFF
ON
ON
7.0x
ON
ON
OFF
ON
7.5x
ON
ON
ON
ON
8.0x
OFF
OFF
OFF
ON

6253M Mainboard Chapter 2 Installation
2-2-2 CPU Setting
a. For 233~333MHz Intel Pentium II & 266~466MHz CeleronTM CPUs.
INTERNAL CPU CLOCK SW1
233MHz (66x3.5)
266MHz (66x4.0)
300MHz (66x4.5)
333MHz (66x5.0)
366MHz (66x5.5)
400MHz (66x6.0)
433MHz (66x6.5)
466MHz (66x7.0)
b. For 350~450MHz Intel Pentium II and 450~550MHz Pentium III CPUs.
INTERNAL CPU CLOCK SW1
350MHz (100x3.5)
400MHz (100x4.0)
450MHz (100x4.5)
500MHz (100x5.0)
550MHz (100x5.5)
1 2 3 4
ON
OFF
1 2 3 4
ON
OFF
1 2 3 4
ON
OFF
1 2 3 4
ON
OFF
1 2 3 4
ON
OFF
1 2 3 4
ON
OFF
1 2 3 4
ON
OFF
1 2 3 4
ON
OFF
1 2 3 4
ON
OFF
1 2 3 4
ON
OFF
1 2 3 4
ON
OFF
1 2 3 4
ON
OFF
1 2 3 4
ON
OFF

Chapter 2 Installation 6253M Mainboard
2-3 SYSTEM MEMORY INSTALLATION
The Mainboard provides four 168-pin DIMM sockets for system memory expansion
from 8MB to 512MB SDRAM, 1GB registered SDRAM or 1GB EDO DRAM. (EDO
DRAM is available for 66MHz processors only.) These four DIMMs are arranged to
four banks, please refer to page A.
Bank/DIMM Memory Module Total Memory
Bank0/DIMM1 8/16/32/64/128/256MB 8MB~256MB
Bank1/DIMM2 8/16/32/64/128/256MB 8MB~256MB
Bank2/DIMM3 8/16/32/64/128/256MB 8MB~256MB
Bank3/DIMM4 8/16/32/64/128/256MB 8MB~256MB
Total System Memory 8MB~1GB
DRAM type, size, parity supported:
 EDO DRAM: for 66MHz system frequency only
 Unbuffered, registered SDRAM ith SPD
 Both parity or non-parity are available.
 3.3V, Single/double-side, 8/16/32/64/128/256Mbytes
(Max. memory size: 256MB registered SDRAM or EDO DRAM)
Both 4Mbx4 and 16Mbx4 (Each side has 16 chips.) SDRAM devices are
supported in the form of Registered DIMMs only.
For 66MHz host bus CPUs use 12ns or aster DIMM module;
For 100MHz host bus CPUs use 10ns or aster and PC-100 compliant modules .
 SPD (Serial Presen e Dete t)
This EPROM contains speed and design information of the memory module. The
mainboard may get optimal performance via accessing the data of SPD.
 ECC (Error Che k and Corre tion)
This mainboard can support the ECC function hile utilizing parity modules. To
enable this function, users must set “DRAM Data Integrity Mode” to “ECC” through
“Chipset Features Setup” from the BIOS setup screen. All in all, ECC’s function is to
detect and correct the errors of transfer data.

6253M Mainboard Chapter 2 Installation
2-4 IDE DRIVER INSTALLATION
Setup for Windows 95/98 :
1. Start Windo s 95/98.
2. Put the All-In-One CD into your CD-ROM drive.
3. Select “START”, “RUN”.
4. Type “D:\IDE\WIN95\SETUP.EXE” or “E:\IDE\WIN95\SETUP.EXE”.
(If your operating system is Win95, please type “D or E:\ inp2x4.exe”
before you install IDE driver.)
5. Restart the computer, then follo the instructions on your screen to install
ne IDE driver e offer in the All-In-One CD.
6. Exit Windo s 95/98, turn po er off; then turn po er on.
2-5 YAMAHA SOUND DRIVER INSTALLATION
2-5-1 Installing Yamaha 724/740 PCI Driver for WinNT
Yamaha Sound 724/740 PCI Driver for WinNT is included in the Driver/
Utility CD under the autorun main menu “Install Yamaha 724/740 PCI
Driver”. To install this driver, just take the follo ing steps:
1. Start WinNT 4.0 and insert the Driver/Utility CD into your CD-ROM Drive.
2. The screen ill automatically sho the autorun main menu hich includes
“Install Yamaha 724/740 PCI Driver”.
3. Click this item and “Yamaha DS-XG Setup” screen ill display.
4. Click “Windo s NT4.0 Driver” and driver setup ill automatically start to run.
5. Follo the instructions on the autorun screen until setup is complete.
6. Restart your system to put the sound driver into effect.
2-5-2 Installing Yamaha 724/740 PCI Driver for Win95/98
1. Start your Win95/98 and insert the Driver/Utility CD into CD-ROM Drive.
2. The screen ill automatically sho the autorun main menu hich includes
“Install Yamaha 724/740 PCI Driver”.
3. Click this item and “Yamaha DS-XG Setup” screen ill display.
4. Click “Windo s 95/98 Driver” and driver setup ill automatically start to run.
5. Follo the instructions on the autorun screen until setup is complete.
Restart your computer to put the sound driver into effect.

Chapter 2 Installation 6253M Mainboard
2-6 VOODOO III AGP DRIVER INSTALLATION
2-6-1 Installing Voodoo III AGP Driver for Win95/98
1. Start your Win95/98 and insert the Driver/Utility CD into CD-ROM Drive.
2. The screen ill automatically sho the autorun main menu hich includes
“Install Voodoo III AGP Driver”.
3. Click this item to begin installing the driver.
4. Click “Drivers Setup” and driver setup ill automatically start to run.
5. Follo the instructions on the autorun screen until setup is complete.
2-6-2 Installing Voodoo III AGP Driver for WinNT
1. Start your WinNT and insert the Driver/Utility CD into CD-ROM Drive.
2. The screen ill automatically sho the autorun main menu hich includes
“Install Voodoo III AGP Driver”.
3. Click this item to begin installing.
4. Click “Drivers Setup” and driver setup ill automatically start to run.
5. Follo the instructions on the autorun screen.
6. Choose 3Dfx Interactive Inc. Voodoo3 2000 or 3000 depends on your chipset
type.
7. Follo the instructions on the autorun screen until setup is completed.
2-7 HARDWARE MONITOR INSTALLATION
Setup for Win95/98 or WinNT
1. Start Windo s95/98 or WinNT.
2. Insert All-In-One CD into your CD-ROM drive.
3. Choose “Install Hard are Monitor” in the installation main menu.
4. Follo the instructions on the autorun screen until setup is completed.
Note: After finishing Hardware Do tor installation, in WinNT you must restart
your omputer, but in Win95/98 you don’t have to.

Chapter 3 Award BIOS Setup 6253M Mainboard
CHAPTER 3 AWARD BIOS SETUP
A ard BIOS manufacturer provides access to the system BIOS through the hard are
and soft are on the mainboard. The hard are consists of a Flash ROM and the
soft are is a group of programs that are installed in the ROMBIOS along ith all the
other data the BIOS must contain.
After the BIOS is updated, if you ant to clear the old setup data stored in the CMOS,
then you can clear CMOS.
NOTE : In case CMOS should be cleared, unplug the po er cord, set Jumper 8 2-3
closed for at least 5 seconds, put it back to 1-2 position and plug the po er cord
again.
JP8
Normal 1-2
Clear CMOS 2-3
Normal (Pin 1-2 losed) Clear CMOS (Pin 2-3 losed)
For JP8 Lo ation, please see Page A Component Lo ation Diagram.

Chapter 3 Award BIOS Setup 6253M Mainboard
3-1 UPDATE BIOS PROCEDURE
If the BIOS needs to be updated, you can get a CD ith the updated BIOS utility in
the package. The updated BIOS utility includes :
“a dflash.exe” -- BIOS update utility program
“a dflash.doc”
The update procedure is as follo ing:
1. Boot the system to DOS mode in a normal manner.
2. Insert the updated CD to drive D (or E).
3. Change orking directory to CD-ROM drive, D or E, hich contains the update
BIOS CD. -- Type “d:\” or “e: \”, then press “ENTER”.
4. Type “cd flash”, then press “ENTER”.
5. Type “a dflash”, then press “ENTER”-- for running the BIOS update utility.
6. Type “(update BIOS file name ith version number).bin”, ENTER.
7. If you do not ant to save the old BIOS, type “N” hen the screen displays the
message : " Do you ant to save BIOS (Y/N) ?".
8. Type “Y“ hen the screen sho s the message : " Are you sure to program
(Y/N) ?".
9. Follo instructions displayed on the screen. DO NOT remove the update BIOS
CD from the CD-ROM drive nor turn the system po er off until the BIOS update
is completed.
10. Turn the po er off. Clear the data in CMOS according to the procedure described
in the previous page.
11. Turn the system po er on and test that your system is orking properly.