Intel ATX BX2 User Manual

CHAPTER 1 INTRODUCTION

Chapter 1

INTRODUCTION

The A TX BX2 mainboard is a high-performance dual-processor personal computer mainboard based on the Intel® Pentium® II processor. The Intel

Pentium® II processor supports MMXTM(Multimedia Extension) technology .

The mainboard uses the highly integrated Intel® 82440BX chipset to support the PCI/ISA and Green standards, and to provide the Host/AGP bridge. The 82371EB chipset integrates all system control functions such as ACPI (Advanced Configuration and Power Interface). The ACPI provides more Energy Saving Features for the OSPM(OS Direct Power Management) function. The Intel® 82371EB chipset also improves the IDE transfer rate by supporting Ultra DMA/33 IDE that transfers data at the rate of 33MB/s.

The mainboard also supports the System Hardware Monitor Controller as an optional function. This function includes: CPU /power supply/chassis fan revolution detect, CPU/system voltage monitor, system temperature monitor , and chassis intrusion detect(optional).

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CHAPTER 1 INTRODUCTION

1.1 Mainboard Features

CPU

l T wo Slot 1 for Intel l Supports FSB 66MHz for 233MHz, 266MHz, 300MHz, 333MHz and higher .

Pentium® II processor.

FSB 100MHz for 350MHz, 400MHz, 450MHz, 500MHz and higher

Chipset

l Intel

82440BX AGP chipset.

Clock Generator

l 66.6MHz/100MHz clocks are supported.

Main Memory

l Supports eight memory banks using four 168-pin unbuffered DIMM

sockets.

l Supports a maximum memory size of 1GB for Registered SDRAM and

512MB for Unbuffered SDRAM.

l Supports ECC(1- bit Error Code Correct) and EC(Multiple-Bit Error Detect)

function.

Slots

l One AGP(Accelerated Graphics Port) slot.

- AGP specification compliant

- AGP 66/133MHz 3.3v device support

l Five 32-bit PCI Bus slots (provides four PCI Master slots and one PCI

Slave slot) and two 16-bit ISA bus slots (one shared slot)

l Supports 3.3v/5v PCI bus Interface.

On-Board IDE

l An IDE controller on the Intel

82371EB PCI Chipset provides IDE HDD/

CD-ROM with PIO, Bus Master and Ultra DMA/33 operation modes.

l Can connect up to four IDE devices.

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CHAPTER 1 INTRODUCTION

On-Board Dual Channel Ultra Wide SCSI

l Adaptec

7895 Dual Channel Ultra Wide chipset.

On-Board Peripherals

l On-Board Peripherals include:

- 1 floppy port supports 2 FDD with 360K, 720K, 1.2M, 1.44M and

2.88Mbytes.

- 2 serial ports (COMA + COMB) or 1 serial port and 1 IrDA port.

- 1 parallel port supports SPP/EPP/ECP mode

- 2 USB ports

Switching V oltage Regulator

l On-board switching mode DC-DC Step Down Regulator. l Conforms to Intel VRM ver 8.1 specifications. l Over-Voltage and Over-Current protection.

BIOS

l The mainboard BIOS provides “Plug & Play” BIOS which detects the

peripheral devices and expansion cards of the board automatically .

l The mainboard provides a Desktop Management Interface(DMI) function

which records your mainboard specifications.

Dimension

l ATX form factor: 30cm(L) x 25cm(W) x 6 layers PCB

Mounting

l 9 mounting holes.

System Hardware Monitor (optional)

l CPU/Power Supply/Chassis Fan Revolution Detect l CPU Fan Control (the fan will automatically stop when the system enters

suspend mode)

l System Voltage Detect l CPU Overheat W arning. l Display Actual Current Voltage

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CHAPTER 1 INTRODUCTION

1.2 Mainboard Layout

PSFAN1

AGP

CFAN2

SLOT 1

JSOR2

JDSCSI

1 3

BATT

FW82443BX

JSOUND

JWOL1

Adaptec

7895

JBAT1

JIPWR

JGL1

DIMM 1

JGS1

DIMM 2

DIMM 3

DIMM 4

IDE2

FW82371EB

16-bit Ultra Wide SCSI CH1

16-bit Ultra Wide SCSI CH2

8-bit Ultra SCSI CH2

CSFAN1

FDC

JWLED1

JFP1

JRMS1

IDE1

JRMS2

Top: mouse Bottom: keyboard

USB

Top: Port 1

Bottom: Port 2

Top: LPT

Bottom: COM A COM B

Hardware

SW1

Monitor

I/O APIC

IR1

Power Supply

ATX

JSM1

JMDM1

BIOS

CFAN1

JSOR1

SLOT 1

PCI SLOT 1

PCI SLOT 2

PCI SLOT 3

PCI SLOT 4

PCI SLOT 5

ISA SLOT 1

ISA SLOT 2

MS-6120

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CHAPTER 2 HARDWARE INSTALLATION

Chapter 2

HARDWARE INSTALLATION

2.1 Central Processing Unit: CPU

The mainboard operates with Intel® Pentium® II processor with MMX technology. The mainboard uses a CPU Slot called Slot 1 for easy CPU

installation and a DIP switch (SW1) to set the proper speed for the CPU. The CPU should always have a Heat Sink and a cooling fan attached to prevent overheating.

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CHAPTER 2 HARDWARE INSTALLATION

2.1-1 CPU Installation Procedures

There are two kinds of Pentium® II processor that is currently used: the OEM Pentium® II processor and the Boxed Pentium® II processor. OEM Pentium® II processor has no Heat Sink, Fan and Heat Sink Support, while the Boxed Pentium® II processor is provided with Heat Sink w/ fan and Heat Sink Support.

A. OEM Pentium

Processor Lock

Pentium® II Processor

Heat Sink Support Top Bar

Heat Sink Support Base

II processor Installation Procedures

Heat Sink W/Fan

Heat Sink Support Pin

Notch Hole

Retention Mechanism

Required Things:

Pentium® II processor - Processor . *Retention Mechanism(RM) - Plastic Guide that holds the S.E.C. Catridge

in the Slot 1 connector.

*Retention Mechanism Attach Mount(RMAM) - Bolt/Bridge assemblies

inserted up through the bottom of the motherboard. RM secures to RMAM ( 2 RMAM required per RM ).

*Heat Sink Support Base (HSSBASE) - Plastic support bar mounted to

the mainboard under the ATX heatsink. (One leg is always bigger than the other one)

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CHAPTER 2 HARDWARE INSTALLATION

*Heat Sink Support Pin (HSSPIN) - Plastic pins inserted through the

HSSBASE to secure it to the mainboard (2 required per Assembly).

*Heat Sink Support T op Bar (HSSTOP) - Plastic bar that clips onto the

HSSBASE through the fins on the ATX heatsink.

**Heat Sink w/ fan - Heat Sink that can be attached to the Pentium® II

processor with metal clip.

Note: * Provided by MSI mainboard.

** Provided by Special request.

HSSBASE

HSSPIN

RMAM

HSSTOP

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CHAPTER 2 HARDWARE INSTALLATION

Step 1: Insert the Retention Mechanism Attach Mount at the bottom of the mainboard.

Step 2: Install the Retention Mechanism.

Look for the key on Slot 1, and match it with the Notch Key on the Retention Mechanism for proper direction. Then, attach the Retention Mechanism to the Retention Mechanism Attach Mount. Use a Screwdriver to secure the Retention Mechanism.

Retention

Notch Key

Mechanism

Key

SLOT1

êê

Retention

Mechanism

Attach Mount

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CHAPTER 2 HARDWARE INSTALLATION

Step 3: Install the Heat Sink Support Base.

Look for the T wo holes across Slot 1, and match it with the Two legs of the Heat Sink Support Base for the proper direction. T ake note that one hole/leg is bigger than the other. The Four top pins of the Heat Sink Support Base should also be oriented towards Slot 1.

pins

Leg

Heat Sink Support Base

Heat Sink Support Pin

Push the Heat Sink Support Base onto the mainboard, until you hear a click sound. Check for a perfect fit.

Step 4: Install the Heat Sink Support Pin.

Push the Heat Sink Support Pins onto the two holes of the Heat Sink Support Base. Check for a perfect fit. These pins are used to secure the Heat Sink Support Base.

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CHAPTER 2 HARDWARE INSTALLATION

Step 5: Install the Heat Sink with Fan to the Processor.

Push down the metal clips, so that they are in line with the back of the Heat Sink. Be careful, so as not detach the metal clips from the Heat Sink.

Heat Sink w/ Fan

The arrow

should be

Heat Sink Base Holder

Metal Clips

pointing down.

In case the metal clips are detached from the Heat Sink, re-attach them. Look for the arrow on the metal clip. This arrow should be pointing down and aligned with the Heat Sink Support Base Holder.

Attach the Heat Sink to the processor.

Clip Holder

Secure holes

Clip Holder

Pentium® II processor (Back)

Heat Sink w/ Fan(Back)

Metal Clips Ear

Secure Posts

Metal Clips Ear

- Look at the back of the Heat Sink and take note of the 2 secure posts. Insert these 2 Secure posts to the 2 secure holes on the back of the processor.

- Align the ears of the metal clips with the clip holders on the back of the processor. Use a screw driver to push the metal clips onto the clip holders. Check for a perfect fit.

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CHAPTER 2 HARDWARE INSTALLATION

Step 6: Install the Processor.

Unlock the Processor by pushing in the Processor Locks.

Insert the Processor like inserting a PCI or an ISA card.

Step 7: Lock the Processor Locks.

Secure the CPU by pulling the Processor Locks out.

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CHAPTER 2 HARDWARE INSTALLATION

Step 8: Install the Heat Sink Support T op Bar .

Push the Heat Sink Support Top Bar to the Heat Sink Support Base, Until you hear a “click” sound. Check for a perfect fit.

Heatsink Support Top Bar

The installation is now complete.

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CHAPTER 2 HARDWARE INSTALLATION

B. Boxed Pentium® II processor Installation Procedures

The Boxed Pentium® II processor has a built- in Fan and Heat Sink. It also has a Heat Sink Support. So if you’re going to use the Boxed processor, all you need is the Retention Mechanism.

Step 1: Insert the Retention Mechanism Attach Mount at the bottom of the mainboard.

Step 2: Install the Retention Mechanism.

Retention

Mechanism

Notch Key

Key

SLOT1

êê

Retention

Mechanism

Attach Mount

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CHAPTER 2 HARDWARE INSTALLATION

Step 3: Install the Heat Sink Support Base.

Look for the 2 holes across Slot 1, and match it with the 2 Heat Sink Support Base. Take note that one hole/base is bigger than the other.

Retention Mechanism

Notch Hole

PC-3742

Heat Sink Support Base

Push the Heat Sink Support Base onto the mainboard, until you hear a click sound. Check for a perfect fit.

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CHAPTER 2 HARDWARE INSTALLATION

Step 4: Install the Heat Sink Support.

Attach the 2 Heat Sink Supports to the sides of the Processor. These Heat Sink Supports will fit in any direction, so be sure that the Heat Sink Support Locks are oriented outwards for the proper direction.

Intel® Boxed PentiumTM II Processor

Heat Sink Support

Heat Sink Support Lock

PC-3743

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