MSI 661FM3-L, 661FM3-V, MS-7082 User Manual

661FM3 Series

MS-7082 (V1.X) Mainboard

G52-70821X1

i

Copyright Notice

The material in this document is the intellectual property of MICRO-STAR
INTERNATIONAL. We take every care in the preparation of this document, but no

guarantee is given as to the correctness of its contents. Our products are under
continual improvement and we reserve the right to make changes without notice.

Trademarks

All trademarks are the properties of their respective owners.
NVIDIA, the NVIDIA logo, DualNet, and nForce are registered trademarks or trade-

marks of NVIDIA Corporation in the United States and/or other countries.
AMD, Athlon™ , Athlon™ XP, Thoroughbred™, and Duron™ are registered trade­marks of AMD Corporation.
Intel® and Pentium® are registered trademarks of Intel Corporation.
PS/2 and OS®/2 are registered trademarks of International Business Machines
Corporation.
Windows® 95/98/2000/NT/XP are registered trademarks of Microsoft Corporation.
Netware® is a registered trademark of Novell, Inc.
Award® is a registered trademark of Phoenix Technologies Ltd.
AMI® is a registered trademark of American Megatrends Inc.

Revision History

Revision Revision History Date

V1.2 First release for RoHS version June 2006

Technical Support

If a problem arises with your system and no solution can be obtained from the user’s
manual, please contact your place of purchase or local distributor. Alternatively,
please try the following help resources for further guidance.

Visit the MSI website for FAQ, technical guide, BIOS updates, driver updates,
and other information: http://www.msi.com.tw/program/service/faq/

faq/esc_faq_list.php

Contact our technical staff at: http://support.msi.com.tw/

ii

Safety Instructions

1. Always read the safety instructions carefully.

2. Keep this User’s Manual for future reference.

3. Keep this equipment away from humidity.

4. Lay this equipment on a reliable flat surface before setting it up.

5. The openings on the enclosure are for air convection hence protects the equip­ment from overheating. DO NOT COVER THE OPENINGS.

6. Make sure the voltage of the power source and adjust properly 110/220V be­fore connecting the equipment to the power inlet.

7. Place the power cord such a way that people can not step on it. Do not place
anything over the power cord.

8. Always Unplug the Power Cord before inserting any add-on card or module.

9. All cautions and warnings on the equipment should be noted.

10. Never pour any liquid into the opening that could damage or cause electrical
shock.

11. If any of the following situations arises, get the equipment checked by service
personnel:

† The power cord or plug is damaged.
† Liquid has penetrated into the equipment.
† The equipment has been exposed to moisture.
† The equipment does not work well or you can not get it work according to

User’s Manual.

† The equipment has dropped and damaged.
† The equipment has obvious sign of breakage.

12. DO NOT LEAVE THIS EQUIPMENT IN AN ENVIRONMENT UNCONDITIONED, STOR­AGE TEMPERATURE ABOVE 600 C (1400F), IT MAY DAMAGE THE EQUIPMENT.

CAUTION: Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by the
manufacturer.

iii

FCC-B Radio Frequency Interference Statement

This equipment has been
tested and found to comply
with the limits for a Class B
digital device, pursuant to Part
15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accor­dance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the measures listed
below.

† Reorient or relocate the receiving antenna.
† Increase the separation between the equipment and receiver.
† Connect the equipment into an outlet on a circuit different from that to

which the receiver is connected.

† Consult the dealer or an experienced radio/television technician for help.

Notice 1

The changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.

Notice 2

Shielded interface cables and A.C. power cord, if any, must be used in order to
comply with the emission limits.

VOIR LA NOTICE D’ INSTALLATION AVANT DE RACCORDER AU RESEAU.

Micro-Star International

MS-7082

This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions:

(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that

may cause undesired operation.

iv

WEEE (Waste Electrical and Electronic Equipment) Statement

v

vi

vii

CONTENTS

Copyright Notice..............................................................................................................ii

Trademarks.......................................................................................................................ii

Revision History..............................................................................................................ii

Technical Support...........................................................................................................ii

Safety Instructions.........................................................................................................iii

FCC-B Radio Frequency Interference Statement........................................................iv

WEEE (Waste Electrical and Electronic Equipment) Statement....................................v

Chapter1 Getting Started......................................................................................1-1

Mainboard Specifications...................................................................................1-2

Mainboard Layout................................................................................................1-4

Chapter2 Hardware Setup.....................................................................................2-1

Quick Components Guide....................................................................................2-2

CPU (Central Processing Unit)............................................................................2-3

Introduction of LGA 775 CPU......................................................................2-3

LGA775 CPU & Cooler Installation..............................................................2-4

Memory.................................................................................................................2-7

Memory Population Rules............................................................................2-7

Installing DDR Modules................................................................................2-7

Power Supply......................................................................................................2-8

ATX 20-Pin Power Connector: CONN1......................................................2-8

ATX 12V Power Connector: JPW2000......................................................2-8

Back Panel............................................................................................................2-9

Connectors........................................................................................................2-10

Floppy Disk Drive Connector: FDD1..........................................................2-10

ATA100 Hard Disk Connectors: IDE1 & IDE2...........................................2-10

Serial ATA II Connectors: SATA1 & SATA2...............................................2-11

Chassis Intrusion Switch Connector: JCI1...............................................2-11

Fan Power Connectors: CPUFAN1 & CHSFAN1.....................................2-12

Serial Port Connector: JCOM1..................................................................2-12

Front Panel Audio Connector: JAUD1......................................................2-13

IrDA Infrared Module Header: IR1.............................................................2-13

Front USB Connectors: JUSB1 & JUSB2.................................................2-14

SPDIF Connector: JSP1.............................................................................2-14

Front Panel Connectors: JFP1..................................................................2-15

CD-In Connector: CD_IN1..........................................................................2-15

Button.................................................................................................................2-16

Clear CMOS Jumper: JBAT1.....................................................................2-16

viii

BIOS Flash Jumper: BIOS_WP1................................................................2-16

Slots....................................................................................................................2-17

AGP (Accelerated Graphics Port) Slot....................................................2-17

PCI (Peripheral Component Interconnect) Slots......................................2-17

PCI Interrupt Request Routing...................................................................2-17

ix

Getting Started

Chapter 1

Getting Started

Thank you for purchasing 661FM3 Series (MS-7082
v1.X) Micro ATX mainboard. The 661FM3 Series (MS­7082 v1.X) is based on SiS® 661FX & SiS® 964 chipsets
for optimal system efficiency. Designed to fit the ad­vanced Intel® Pentium 4/Celeron DTM (LGA775)
processor, the 661FM3 Series (MS-7082 v1.X) deliv­ers a high performance and professional desktop plat­form solution.

1-1

MS-7082 Mainboard

Mainboard Specifications

Processor Support

- Intel® Pentium 4/ Celeron-D in the LGA 775 package.
(For the latest information about CPU, please visit http://www.msi.

com.tw/program/products/mainboard/mbd/pro_mbd_cpu_support.
php)

Supported FSB

- 533/ 800 MHz

Chipset

- North Bridge: SiS® 661FX chipset

- South Bridge: SiS® 964 chipset

Memory Support

- DDR 400 SDRAM (2GB Max)

- 2 DDR DIMMs (184pin/ non-ECC)

- Supports 128Mb, 256Mb or 512Mb DDR technologies
(For more information on compatible components, please visit http:/

/www.msi.com.tw/program/products/mainboard/mbd/
pro_mbd_trp_list.php)

LAN

- Supports LAN 10/100 Fast Ethernet by Realtek 8100C

Audio

- Chip integrated by Realtek® ALC655

- Supports 6-channel audio-out

- Compliant with AC’97 2.2 Spec

IDE

- 2 IDE ports by 964

- Supports Ultra DMA 66/ 100/ 133 mode

- Supports PIO, Bus Master operation mode

SATA

- 2 SATA ports by 964

- Supports storage and data transfers at up to 150 MB/s

Floppy

- 1 floppy port

- Supports 1 FDD with 360K, 720K, 1.2M, 1.44M and 2.88Mbytes

1-2

Connectors

Back panel

- 1 PS/2 mouse port

- 1 PS/2 keyboard port.

- 1 Serial port

- 1 Parallel port supporting SPP/EPP/ECP mode

- 1 VGA port

- 4 USB 2.0 Ports.

- 1 LAN jack (10/100) by Realtek 8100C

- 1 (3 in 1) audio connector

On-Board Pinheaders

- 1 IrDA pinheader

- 2 USB 2.0 pinheaders

- 1 Serial port pinheader

- 1 SPDIF-out pinheader

Slots

- 1 AGP slot

- 3 PCI slots, support 3.3V/ 5V PCI bus Interface

Getting Started

Form Factor

- Micro-ATX (24.4 cm X 24.4 cm)

Mounting

- 8 mounting holes

1-3

MS-7082 Mainboard

DIMM2DIMM

1

AGP Slot

BATT+

Winbond

W83627THG

PCI Slot 1

PCI Slot 2

PCI Slot 3

Mainboard Layout

T: mouse
B: keyboard

CPUFAN1

CONN1

FDD1

T:

Line-In
M:
B:Mic

Line-Out

CD_IN1

RTL8100C

ALC655

JSP1

JPW2000

BIOS_WP1

SiS

661FX

BIOS

IR1

JAUD1

COM1

661FM3 Series

(MS-7082 v1.X) Mainboard

SiS
964

JBAT1

SATA2

SATA1

JCI1

JFP1

IDE2

CHSFAN1

JUSB2

JUSB1

IDE1

1-4

Hardware Setup

Chapter 2

Hardware Setup

This chapter provides you with the information about
hardware setup procedures. While doing the installation,
be careful in holding the components and follow the
installation procedures. For some components, if you
install in the wrong orientation, the components will not
work properly.

Use a grounded wrist strap before handling computer
components. Static electricity may damage the
components.

2-1

MS-7082 Mainboard

Quick Components Guide

CPUFAN1, p.2-12

Back Panel
I/O, p.2-9

BIOS_WP1, p.2-16

IR1, p.2-13

PCI Slots, p.2-17

CD_IN1, p.2-15

JPW2000, p.2-8

CPU, p.2-3

DDR DIMMs, p.2-7

CONN1, p.2-8

FDD1, p.2-10

IDE1, IDE2,

p.2-10

CFSFAN1, p.2-12

JFP1, p.2-15
SATA1/2, p.2-11

JUSB2, p.2-14

JSP1, p.2-14

2-2

JCOM1, p.2-12

JAUD1, p.2-13

AGP Slot,

p.2-17

JUSB1, p.2-14
JCI1, p.2-11

JBAT1, p.2-16

Hardware Setup

CPU (Central Processing Unit)

The mainboard supports Intel® Pentium 4 / Celeron DTM (LGA775) processor. The
mainboard uses a CPU socket called LGA775. When you are installing the CPU,
make sure to install the heat sink/cooler to prevent overheating. If you do
not have the CPU, contact your dealer to purchase and install them before turning on
the computer.
For the latest information about CPU, please visit http://www.msi.com.tw/program/
products/mainboard/mbd/pro_mbd_cpu_support.php

Important

1. Overheating will seriously damage the CPU and system. Always make

sure the cooling fan can work properly to protect the CPU from overheating.

2. Make sure that you apply an even layer of heat sink paste (or thermal tape)

between the CPU and the heatsink to enhance heat dissipation.

3. While replacing the CPU, always turn off the ATX power supply or unplug

the power supply’s power cord from the grounded outlet first to ensure the
safety of CPU.

Introduction of LGA 775 CPU

The surface of LGA 775 CPU.
Remember to apply some sili­cone heat transfer compound on
it for better heat dispersion.

Yellow triangle is the Pin 1 indicator

The pin-pad side of LGA 775
CPU.

Yellow triangle is the Pin 1 indicator

2-3

MS-7082 Mainboard

LGA775 CPU & Cooler Installation

When you are installing the CPU, make sure the CPU has a cooler attached on
the top to prevent overheating. If you do not have the cooler, contact your dealer

to purchase and install them before turning on the computer. Meanwhile, do not
forget to apply some silicon heat transfer compound on CPU before installing the heat
sink/cooler fan for better heat dispersion.
Follow the steps below to install the CPU & cooler correctly. Wrong installation will
cause the damage of your CPU & mainboard.

1.The CPU has a plastic cap on it to
protect the contact from damage.
Before you have installed the CPU,
always cover it to protect the socket
pin.

3.The pins of socket reveal.

2.Remove the cap from lever hinge side
(as the arrow shows).

4.Open the load lever.

Important

1.Confirm if your CPU cooler is firmly installed before turning on your system.

2. Do not touch the CPU socket pins to avoid damaging.

3. The availability of the CPU land side cover depends on your CPU packing.

2-4

Hardware Setup

5.Lift the load lever up and open the
load plate.

7.Visually inspect if the CPU is
seated well into the socket. If not,
take out the CPU with purely verti­cal motion and reload it again. Then
cover the load plate onto the
package.

6.After confirming the CPU direction for
correction mating, put down the CPU
in the socket housing frame. Be sure
to grape on the edge of the substrate.
Note that the alignment keys are
matched.

alignment
key

8. Press down the load lever lightly

onto the load plate, and then se­cure the lever with the hook under
retention tab.

9. Align the holes on the mainboard
with the cooler. Push down the
cooler until its four clips get
wedged into the holes of the
mainboard.

10.Press the four hooks down to fas­ten the cooler. Then rotate the lock­ing switch (refer to the correct di­rection marked on it) to lock the
hooks.

locking

switch

2-5

MS-7082 Mainboard

11.Turn over the mainboard to confirm
that the clip-ends are correctly
inserted.

Important

1.Check the information in BIOS (Chapter 3) for the CPU temperature.

2. Whenever CPU is not installed, always protect your CPU socket pin with the
plastic cap covered (shown in Figure 1) to avoid damaging.

3. Please note that the mating/unmating durability of the CPU is 20 cycles.
Therefore we suggest you do not plug/unplug the CPU too often.

2-6

Hardware Setup

1

2

Memory

The mainboard provides two 184-pin unbuffered DDR266/DDR333/DDR400 DDR
SDRAM, and supports the memory size up to 2GB without ECC. To operate properly,
at least one DIMM module must be installed.

For more information on compatible components, please visit http://www.msi.com.tw/

program/products/mainboard/mbd/pro_mbd_trp_list.php

DDR

184-pin, 2.5V

40x2=80 pin 52x2=104 pin

Memory Population Rules

DIMM1
DIMM2

DIMM1
DIMM2

Installing DDR Modules

1. The memory module has only one notch on the center and will only fit in the right
orientation.

2. Insert the memory module vertically into the DIMM slot. Then push it in until the
golden finger on the memory module is deeply inserted in the DIMM slot.

3. The plastic clip at each side of the DIMM slot will automatically close.

Volt

Notch

Note: You can barely see the golden finger if the module is properly inserted in the
DIMM slot.

2-7

MS-7082 Mainboard

Power Supply

ATX 20-Pin Power Connector: CONN1

This connector allows you to connect to an ATX power supply. To connect to the ATX
power supply, make sure the plug of the power supply is inserted in the proper
orientation and the pins are aligned. Then push down the power supply firmly into the
connector.

11

20

CONN1

1

10

PIN SIGNAL

1 3.3V
2 3.3V
3 GND
4 5V
5 GND
6 5V
7 GND
8 PW_OK
9 5V_SB
10 12V

PIN SIGNAL

11 3.3V
12 -12V
13 GND
14 PS_ON
15 GND
16 GND
17 GND
18 -5V
19 5V
20 5V

ATX 12V Power Connector: JPW2000

This 12V power connector is used to provide power to the CPU.

Pin Definition

CONN1 Pin Definition

PIN SIGNAL

1 GND
2 GND
3 12V
4 12V

JPW2000

2

4

1

3

Important

1. Maker sure that all the connectors are connected to proper ATX power sup­plies to ensure stable operation of the mainboard.

2. Power supply of 350 watts (and above) is highly recommended for system
stability.

2-8

Back Panel

Mouse

Parallel

Hardware Setup

L-in
L-out

LAN

Keyboard

Mouse/Keyboard Connector

The standard PS/2® mouse/keyboard DIN connector is for a PS/2® mouse/keyboard.

Parallel Port Connector
A parallel port is a standard printer port that supports Enhanced Parallel Port (EPP)
and Extended Capabilities Parallel Port (ECP) mode.

Serial Port Connector
The serial port is a 16550A high speed communications port that sends/ receives 16
bytes FIFOs. You can attach a serial mouse or other serial devices directly to the
connector.

VGA Connector
The DB15-pin female connector is provided for VGA monitors.

LAN (RJ-45) Jack
The standard RJ-45 jack is for connection to single Local Area Network (LAN). You
can connect a network cable to it.

USB Connectors
The OHCI (Open Host Controller Interface) Universal Serial Bus root is for attaching
USB devices such as keyboard, mouse, or other USB-compatible devices.

COM Port

VGA Port

USB Ports

USB Ports

MIC

Audio Port Connectors
These audio connectors are used for audio devices. You can differentiate the color
of the audio jacks for different audio sound effects.

Blue audio jack - Line In, is used for external CD player, tapeplayer or

other audio devices.

Green audio jack - Line Out, is a connector for speakers or headphones.
Pink audio jack - Mic In, is a connector for microphones.

2-9

MS-7082 Mainboard

Connectors

Floppy Disk Drive Connector: FDD1

This standard FDD connector supports 360K, 720K, 1.2M, 1.44M and 2.88M floppy
disk types.

FDD1

ATA133 Hard Disk Connectors: IDE1 & IDE2

The mainboard has a 32-bit Enhanced PCI IDE and Ultra DMA 66/100/
133 controller that provides PIO mode 0~4, Bus Master, and Ultra DMA
66/100/133 function. You can connect hard disk drives, CD-ROM and
other IDE devices.

The Ultra ATA133 interface boosts data transfer rates between the
computer and the hard drive up to 133 megabytes (MB) per second.
The new interface is one-third faster than earlier record-breaking
Ultra ATA/100 technology and is backwards compatible with the existing
Ultra ATA interface.

IDE1IDE2

IDE1 (Primary IDE Connector)

The first hard drive should always be connected to IDE1. IDE1 can connect a Master
and a Slave drive. You must configure second hard drive to Slave mode by setting the
jumper accordingly.

IDE2 (Secondary IDE Connector)
IDE2 can also connect a Master and a Slave drive.

Important

If you install two hard disks on cable, you must configure the second drive to
Slave mode by setting its jumper. Refer to the hard disk documentation
supplied by hard disk vendors for jumper setting instructions.

2-10

Hardware Setup

Serial ATA II Connectors: SATA1 & SATA2

SATA1~SATA2 are high-speed SATA interface ports. Each supports data rates of
150 MB/s and is fully compliant with Serial ATA specifications. Each Serial ATA con­nector can connect to 1 hard disk device.

SATA2

7

1

SATA1

Serial ATA cable

Connect to SATA connector

Pin Definition

PIN SIGNAL PIN SIGNAL

1 GND 2 TXP
3 TXN 4 GND

5 RXN 6 RXP
7 GND

Take out the dust cover
and connect to the hard
disk devices

Important

Please do not fold the Serial ATA cable into 90-degree angle. Otherwise,
data loss may occur during transmission.

Chassis Intrusion Switch Connector: JCI1

This connector connects to a 2-pin chassis switch. If the chassis is opened, the
switch will be short. The system will record this status and show a warning mes­sage on the screen. To clear the warning, you must enter the BIOS utility and clear the
record.

1
2

JCI1

CINTRU

GND

2-11

MS-7082 Mainboard

Fan Power Connectors: CPUFAN1 & CHSFAN1

The fan power connectors support system cooling fan with +12V. When connecting
the wire to the connectors, always take note that the red wire is the positive and
should be connected to the +12V, the black wire is Ground and should be connected
to GND. If the mainboard has a System Hardware Monitor chipset on-board, you must
use a specially designed fan with speed sensor to take advantage of the CPU fan
control.

GND

+12V
Sensor

GPIO

CPUFAN1

CHSFAN1

SENSOR

+12V

GND

Important

1.Please refer to the recommended CPU fans at Intel® official website or
consult the vendors for proper CPU cooling fan.

2.Always consult the vendors for proper CPU cooling fan.

3. CPUFAN1 supports the fan control. You can install the PC Alert utility that
will automatically control the CPU fan speed according to the actual CPU
temperature.

Serial Port Connector: JCOM1

The mainboard offers one serial port JCOM1. It is 16550A high speed communication
ports that senda/receivea/ 16 bytes FIFOs. You can attach a serial mouse or other
serial device directly to it.

9 1

10 2

JCOM1

2-12

Pin Definition

PIN SIGNAL DESCRIPTION

1 DCD Data Carry Detect
2 SIN Serial In or Receive Data
3 SOUT Serial Out or Transmit Data
4 DTR Data Terminal Ready)
5 GND Ground
6 DSR Data Set Ready
7 RTS Request To Send
8 CTS Clear To Send
9 RI Ring Indicate

Hardware Setup

Front Panel Audio Connector: JAUD1

The JAUD1 front panel audio connector allows you to connect the front panel audio
and is compliant with Intel® Front Panel I/O Connectivity Design Guide.

JAUD1

2
1

Pin Definition

PIN SIGNAL DESCRIPTION

1 AUD_MIC Front panel microphone input signal
2 AUD_GND Ground used by analog audio circuits
3 AUD_MIC_BIAS Microphone power
4 AUD_VCC Filtered +5V used by analog audio circuits
5 AUD_FPOUT_R Right channel audio signal to front panel
6 AUD_RET_R Right channel audio signal return from front panel
7 HP_ON Reserved for future use to control headphone amplifier
8 KEY No pin
9 AUD_FPOUT_L Left channel audio signal to front panel
10 AUD_RET_L Left channel audio signal return from front panel

10

9

Important

6

If you don’t want to connect to the front audio header, pins 5 &

10

6, 9 & 10 have to be jumpered in order to have signal output
directed to the rear audio ports. Otherwise, the Line-Out con-

5

9

nector on the back panel will not function.

IrDA Infrared Module Header: IR1

The connector allows you to connect to IrDA Infrared module. You must configure the
setting through the BIOS setup to use the IR function.

IR1

1

IR1 Pin Definition

Pin Signal

1 VCC5
2 NC
3 IRRX
4 GND
5 IRTX

2-13

MS-7082 Mainboard

Front USB Connectors: JUSB1 & JUSB2

The mainboard provides USB 2.0 pinheaders (optional USB 2.0 bracket available) that
are compliant with Intel® I/O Connectivity Design Guide. USB 2.0 technology increases
data transfer rate up to a maximum throughput of 480Mbps, which is 40 times faster
than USB 1.1, and is ideal for connecting high-speed USB interface peripherals such
as USB HDD, digital cameras , MP3 players, printers , modems and the like.

JUSB1/JUSB2 Pin Definition

JUSB1

2
1

JUSB2

10

9

1

9

2

10

PIN SIGNAL PIN SIGNAL

1 VCC 2 VCC
3 USB0- 4 USB1­5 USB0+ 6 USB1+
7 GND 8 GND
9 Key 10 USBOC

Important

Note that the pins of VCC and GND must be connected correctly to avoid
possible damage.

SPDIF Connector: JSP1

The connector is used to connect SPDIF (Sony & Philips Digital Interconnect Format)
interface for digital audio transmission.

JSP1 Pin Definition

PIN SIGNAL

Connected to JSP1

2-14

1 3

JSP1

1 VCCS
2 SPDIF0
3 GND

The JSP1 supports SPDIF output
only and can be connected to an external
SPDIF Bracket for digital audio
transmission.

SPDIF Bracket (Optional)

Hardware Setup

Front Panel Connectors: JFP1

The mainboard provides one front panel connector JFP1 for electrical connection to
the front panel switches and LEDs. It is compliant with Intel® Front Panel I/O Connec­tivity Design Guide.

JFP1

2

1
HDD
LED

Reset
Switch

9

JFP1 Pin Definition

PIN SIGNAL DESCRIPTION

1 HD_LED_P Hard disk LED pull-up
2 FP PWR/SLP MSG LED pull-up
3 HD_LED_N Hard disk active LED
4 FP PWR/SLP MSG LED pull-up
5 RST_SW_N Reset Switch low reference pull-down to GND
6 PWR_SW_P Power Switch high reference pull-up
7 RST_SW_P Reset Switch high reference pull-up
8 PWR_SW_N Power Switch low reference pull-down to GND
9 RSVD_DNU Reserved. Do not use.

Power
LED

Power
Switch

10

CD-In Connector: CD_IN1

The connector is for CD-ROM audio connector.

CD_IN1

R

GND

L

2-15

MS-7082 Mainboard

Jumper

The motherboard provides the following button for you to set the computer’s function.
This section will explain how to change your motherboard’s function through the use
of button.

Clear CMOS Jumper: JBAT1

There is a CMOS RAM on board that has a power supply from external battery to
keep the data of system configuration. With the CMOS RAM, the system can auto­matically boot OS every time it is turned on. If you want to clear the system
configuration, use the JBAT1 (Clear CMOS Jumper ) to clear data. Follow the instruc­tions below to clear the data:

JBAT1

1

Keep Data

1

3

Clear Data

1

3

Important

You can clear CMOS by shorting 2-3 pin while the system is off. Then return
to 1-2 pin position. Avoid clearing the CMOS while the system is on; it will
damage the mainboard.

BIOS Flash Jumper: BIOS_WP1

This jumper is used to lock or unlock the boot block area on BIOS. When unlocked,
the BIOS boot block area can be updated. When locked, the BIOS boot block area
cannot be updated.

2-16

BIOS_WP1

BIOS Flash UnlockedBIOS Flash Locked

Hardware Setup

Slots

AGP (Accelerated Graphics Port) Slot

The AGP slot allows you to insert the AGP graphics card. AGP is an interface speci­fication designed for the throughput demands of 3D graphics. It introduces a 66MHz,
32-bit channel for the graphics controller to directly access main memory.

AGP Slot

PCI (Peripheral Component Interconnect) Slots

The PCI slots support LAN cards, SCSI cards, USB cards, and other add-on cards
that comply with PCI specifications. At 32 bits and 33 MHz, it yields a throughput rate
of 133 MBps.

PCI Slot

PCI Interrupt Request Routing

The IRQ, acronym of interrupt request line and pronounced I-R-Q, are hardware lines
over which devices can send interrupt signals to the microprocessor. The PCI IRQ
pins are typically connected to the PCI bus pins as follows:

Order 1 Order 2 Order 3 Order 4
PCI Slot 1 INT B# INT C# INT D# INT A#
PCI Slot 2 INT C# INT D# INT A# INT B#
PCI Slot 3 INT D# INT A# INT B# INT C#

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