Msi MS-6738 user Manual

KM2M Combo

MS-6738 (v1.X) Micro ATX Mainboard

Version 1.0

G52-M6738X1-G22

i

Manual Rev: 1.0
Release Date: December 2002

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 when the equip­ment is operated in a commercial environment. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in accor­dance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to
cause harmful interference, in which case the user will be required to correct
the interference at his own expense.

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-6738

T ested to comply
with FCC Standard

For Home or Office Use

ii

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.
All trademarks are the properties of their respective owners.
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.
Microsoft is a registered trademark of Microsoft Corporation. Windows® 98/
2000/NT/XP are registered trademarks of Microsoft Corporation.
NVIDIA, the NVIDIA logo, DualNet, and nForce are registered trademarks or
trademarks of NVIDIA Corporation in the United States and/or other countries.
Netware® is a registered trademark of Novell, Inc.
Award® is a registered trademark of Phoenix T echnologies Ltd.
AMI® is a registered trademark of American Megatrends Inc.
Kensington and MicroSaver are registered trademarks of the Kensington T ech­nology Group.
PCMCIA and CardBus are registered trademarks of the Personal Computer
Memory Card International Association.

Revision History

Revision Revision History Date

V1.0 First release for PCB 1.x Dec. 2002

iii

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 a
service personnel:

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

to User’s Manual.

z The equipment has dropped and damaged.
z 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.

iv

CONTENTS

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

Copyright Notice ..........................................................................................iii

Revision History ...........................................................................................iii

Safety Instructions .......................................................................................iv

Chapter 1. Getting Started ........................................................................ 1-1

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

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

MSI Special Features ........................................................................... 1-5

PC Alert™ 4................................................................................... 1-5

Live BIOS™/Live Driver™ ............................................................ 1-7

Live Monitor™ .............................................................................. 1-8

Chapter 2. Hardware Setup ....................................................................... 2-1

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

Central Processing Unit: CPU ..............................................................2-3

CPU Core Speed Derivation Procedure ......................................... 2-3

CPU Installation Procedures for Socket 462 ..................................2-4

Installing AMD Athlon CPU (Socket 462) Cooler Set ...................2-5

Memory................................................................................................ 2-6

DDR Module Combination ............................................................ 2-7

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

SDR Module Combination ............................................................2-8

Installing SDR Modules ................................................................2-8

Power Supply .......................................................................................2-9

A TX 20-Pin Power Connector: CONN1 .........................................2-9

A TX 12V Power Connector: JPW1 ................................................2-9

Back Panel .......................................................................................... 2-10

Mouse Connector ....................................................................... 2-10

Keyboard Connector ................................................................... 2-11

v

Serial Port Connectors: COM A & JCOM2 (Optional) ................ 2-12

VGA Connector ........................................................................... 2-13

RJ-45 LAN Jack (Optional) .......................................................... 2-13

Audio Port Connectors ............................................................... 2-13

Parallel Port Connector: LPT1...................................................... 2-14

Connectors......................................................................................... 2-15

Floppy Disk Drive Connector: FDD1........................................... 2-15

Chassis Intrusion Switch Connector: JCI1 .................................. 2-15

Hard Disk Connectors: IDE1 & IDE2 ........................................... 2-16

Fan Power Connectors: CPUF A1/SYSF A1 .................................. 2-17

Front Panel Connectors: JFP1 & JFP2 ......................................... 2-18

Front Panel Audio Connector: JAUD1 ........................................ 2-19

Front USB Connectors: JUSB1 .................................................... 2-20

SPDIF Connector: JSP1 ............................................................... 2-21

CD-In Connector: JCD1 ............................................................... 2-22

IrDA Infrared Module Header: JIR1 ............................................ 2-22

Jumpers .............................................................................................. 2-23

Clear CMOS Jumper: JBA T1........................................................ 2-23

FSB Mode Jumper: SW1 ............................................................. 2-24

Slots ................................................................................................... 2-25

AGP (Accelerated Graphics Port) Slot (Optional)........................ 2-25

PCI Interrupt Request Routing .................................................... 2-26

Chapter 3. BIOS Setup.............................................................................. 3-1

Entering Setup...................................................................................... 3-2

Control Keys .................................................................................3-2

Getting Help .................................................................................. 3-3

The Main Menu ...................................................................................3-4

Standard CMOS Features ....................................................................3-6

Advanced BIOS Features ....................................................................3-8

Advanced Chipset Features............................................................... 3-12

vi

Integrated Peripherals ........................................................................ 3-16

Power Management Setup ................................................................. 3-21

PNP/PCI Configurations..................................................................... 3-25

PC Health Status ................................................................................ 3-27

Frequency/Voltage Control ................................................................ 3-28

Load Fail-Safe/Optimized Defaults ..................................................... 3-29

Set Supervisor/User Password........................................................... 3-30

Appendix: Using 4- or 6-Channel Audio Function ....................................A-1

Using 4- or 6-Channel Audio Function ...............................................A-2

Installing the Audio Driver...........................................................A-2

Using 4- or 6-Channel Audio Function ........................................A-2

Testing the Connected Speakers.........................................................A-6

T esting Each Speaker: ..................................................................A-6

Playing KaraOK .................................................................................. A-8

Playing KaraOK............................................................................A-8

T roubleshooting ........................................................................................ T-1

Glossary ....................................................................................................G-1

vii

Getting Started

Getting Started

Thank you for purchasing KM2M (MS-6738) v1.X Mi-

cro ATX mainboard. The KM2M is based on VIA® KM266 &
VIA® VT8235 chipsets and provides 6 USB ports for high-speed
data transmission. With all these special designs, the KM2M
v1.x delivers a high performance and professional desktop plat­form solution.

1-1

MS-6738 Micro ATX Mainboard

KT3 Ultra2-C ATX Mainboard

Mainboard Specifications

CPU

h Socket A for AMD® DuronTM/AthlonTM/ XPTM processor.
h Supports 1GHz to AthlonTM/ XP

Chipset

h VIA® KM266 Chipset.

- FSB @200/266MHz.

- Integrated Savage 8 2D/3D Graphic Controller.

- AGP 4x and high bandwidth Vlink host controller.

- Advanced memory controller support PC2100 (DDR266) technology.

h VIA® VT8235 Chipset

- 533MB/sec Vlink client controller.

- Direct sound ready AC97 digital audio controller.

- Ultra DMA 66/100/133 master mode EIDE controller.

- Supports both ACPI and legacy APM power management.

- 6 ports USB 2.0 controller.

- Integrated Ethernet MAC.

Main Memory

h Supports four memory banks using two 184-pin DDR DIMMs or two 168-

pin SDR DIMMs.

h Supports a maximum memory size of 2GB .
h Supports 2.5v DDR SDRAM DIMM.

TM

2600+ processor.

Slots

h One 4x/2x 2.0 AGP (Accelerated Graphics Port) universal slot. (Optional)
h Three PCI 2.2 32-bit Master PCI Bus slots, supporting 3.3v/5v PCI bus

Interface.

On-Board IDE

h Dual Channel master mode IDE controller on the VIA® VT8235 Chipset

provides IDE HDD/CD-ROM with PIO, Bus Master and Ultra DMA 66/100/
133 operation modes.

h Can connect up to four IDE devices.

On-Board Peripherals

h On-Board Peripherals include:

1-2

Getting Started

- 1 floppy port supports 2 FDDs with 360K, 720K, 1.2M, 1.44M and 2.88
Mbytes.

- 1 serial port (COM1), 1 Intel-spec serial port (JCOM2, Optional) and 1
VGA port

- 1 parallel port supports SPP/EPP/ECP mode

- 6 USB ports (Rear * 4 / Front * 2)

- 1 Line-In/Line-Out/Mic-In port

- 1 LAN RJ45 connector (Optional)

- 1 IrDA connector for SIR/CIR/ASKIR/HPSIR

Audio

h Front Audio supported.
h Chip Integrated.

- 5.1 channel AC’97 software Audio.

- Realtek ALC 650 codec.

LAN (Optional)

h VIA VT8235 integrated MAC + VIA 6103 PHY.
h RJ45 connector.

BIOS

h 2MB Award BIOS with PNP BIOS, ACPI, SMBIOS 2.3, Green and Boot

Block.

h Provides DMI 2.0, WFM 2.0, WOL, WOR, chassis intrusion, and SMBus for

system management.

Dimension

h Micro-ATX Form Factor: 24.5 cm (L) x 23.8 cm (W).

Mounting

h 6 mounting holes.

Others

h LAN Wake-Up function
h Support DMI (Desktop Management Interface) through BIOS
h Support PCI 2.2
h PC2001 Compliant
h Support PS2 Keyboard/Mouse and USB Keyboard/Mouse wake up function

1-3

MS-6738 Micro ATX Mainboard

KT3 Ultra2-C ATX Mainboard

Mainboard Layout

Top : mouse
Bottom: keyboard

y
l

USB ports

p
p
u

X

S

T

r

A

e
w
o
P

T

6

K

E

4

2

C

O

S

CPUFA1

Winbond
83697HF

BIOS

JCOM2

VT6103

JSP1

VIA

JCD1

JPW1

PCI Slot 1

PCI Slot 2

PCI Slot 3

SYSFA1

JFP1

AGP Slot

JFP2

VIA

KM266

SW1

JIR1

1
M
M

I
D

VT8235

1
D
D
F

4

3

2

M

M

M
I

M

I

D

D

M
M

I
D

JBAT1

JCI1

BATT

1
E
D

I

+

JUSB1

Top : LPT

Bottom:
COM A
VGA port

T: R J45 LAN jac k
B: USB ports

T:

Mic
M:Line-In
B:

Line-Out

JAUD1

Codec

KM2M Combo (MS-6738) v1.X Micro ATX Mainboard

2
E
D

I

1-4

Getting Started

MSI Special Features

PC Alert™ 4

The PC AlertTM 4 is a utility you can find in the CD-ROM disk. The utility
is just like your PC doctor that can detect the following PC hardware status
during real time operation:

Ø monitor CPU & system temperatures
Ø monitor fan speeds
Ø monitor system voltages

If one of the items above is abnormal, the program main screen will be
immediately shown on the screen, with the abnormal item highlighted in red.
This will continue to be shown until the condition returns to the normal status.

Adjusting Keys

temperature

modes

COOLER XP

Users can use the Adjusting Keys to change the minimum and maximum
threshold of each item for the system to send out a warning message. Click
Temperature to select the temperature modes of either Fahrenheit (℉) or Cel­sius (℃). The PC Alert4 icon on the Status Area will show the current CPU
temperature.

1-5

MS-6738 Micro ATX Mainboard

KT3 Ultra2-C ATX Mainboard

To better protect the CPU from overheating, a new feature, COOLER

XP, has been added to decrease the temperature of AMD Athlon XP CPU. To

do so, simply click COOLER XP and the screen will show the Cute skin (as
shown below) with information about the CPU and chipset. Right-click the
mouse to select the skin you want to switch to.

Cute

MSI Reminds You...

The new feature COOLER XP will work only if your mainboard
supports AMD Athlon XP CPU.
Items shown on PC Alert 4 vary depending on your system’s status.

1-6

Live BIOS™/Live Driver™

The Live BIOS™/Live Driver™ is a tool used to detect
and update your BIOS/drivers online so that you don’t need to
search for the correct BIOS/driver version throughout the Web
site. To use the function, you need to install the “MSI Live
Update 2” application. After the installation, the “MSI Live
Update 2” icon (as shown on the right) will appear on the screen.

Double click the “MSI Live Update 2” icon, and the fol­lowing screen will appear:

Getting Started

Five buttons are placed on the leftmost pane of the screen. Click the desired
button to start the update process.

zz

z Live BIOS – Updates the BIOS online.

zz

zz

z Live Driver – Updates the drivers online.

zz

zz

z Live VGA BIOS – Updates the VGA BIOS online.

zz

zz

z Live VGA Driver – Updates the VGA driver online.

zz
zz

z Live Utility – Updates the utilities online.

zz

If the product you purchased does not support any of the functions listed
above, a “sorry” message is displayed. For more information on the update
instructions, insert the companion CD and refer to the “Live Update Guide”
under the “Manual” Tab.

1-7

MS-6738 Micro ATX Mainboard

KT3 Ultra2-C ATX Mainboard

Live Monitor™

The Live Monitor™ is a tool used to schedule the search
for the latest BIOS/drivers version on the MSI Web site. To use
the function, you need to install the “MSI Live Update Series 2”
application. After the installation, the “MSI Live Monitor” icon
(as shown on the right) will appear on the screen. Double click
this icon to run the application.

Double click the “MSI Live Monitor” icon at the lower-right corner

of the taskbar, and the following dialog box will appear. You can specify how
often the system will automatically search for the BIOS/drivers version, or
change the LAN settings right from the dialog box.

You can right-click the MSI Live Monitor icon to perform the functions

listed below:

zz

z Auto Search – Searches for the BIOS/drivers version you need immediately.

zz

zz

z View Last Result – Allows you to view the last search result if there is any.

zz

zz

z Preference – Configures the Search function, including the Search schedule.

zz

zz

z Exit – Exits the Live Monitor™ application.

zz

1-8

Hardware Setup

Chapter 2. Hardware
Setup

Hardware Setup

This chapter tells you how to install the CPU, memory
modules, and expansion cards, as well as how to setup the
jumpers on the mainboard. Also, it provides the instructions
on connecting the peripheral devices, such as the mouse,
keyboard, etc.

While doing the installation, be careful in holding the
components and follow the installation procedures.

2-1

MS-6738 Micro ATX Mainboard

CONN1, p.2-9

Back Panel
I/O, p.2-10

JCOM2, p.2-12

AGP Slot,

p.2-25

JAUD1, p.2-19
JCD1, p.2-21
PCI Slots,

p.2-25

JSP1, p.2-21

Quick Components Guide

CPU, p.2-3

JPW1, p.2-9

CPUFA1, p.2-17

DDR DIMMs, p.2-6

SDRAM, p.2-6

FDD1, p.2-15

SYSFA1, p.2-17

IDE1, IDE2,

p.2-16

SW1, p.2-24

JCI1, p.2-15
JUSB1, p.2-20

JBAT1, p.2-23

2-2

JIR1, p.2-22

JFP1 & JFP2,

p.2-18

Hardware Setup

Central Processing Unit: CPU

The mainboard supports AMD® Athlon™, Athlon™ XP and Duron™

processors in the 462 pin package. The mainboard uses a CPU socket called
Socket-462 for easy CPU installation. When you are installing the CPU, make

sure the CPU has a heat sink and a cooling fan attached on the top to
prevent overheating. If you do not find the heat sink and cooling fan, contact

your dealer to purchase and install them before turning on the computer.

CPU Core Speed Derivation Procedure

CPU Clock multipled by Core/Bus ratio equals the CPU core speed.

For example:
If CPU Clock = 100MHz

Core/Bus ratio = 14

then CPU core speed = Host Clock x Core/Bus ratio

= 100MHz x 14
= 1.4 GHz

Thermal Issue for CPU

As processor technology pushes to faster speeds and higher

!

WARNING!

processor must be maintained in the specified thermal requirements. AMD
recommends the use of high performance thermal interface material.

AMD Athlon™/Duron™ processor with a speed of 600MHz and above re­quires LARGER heatsink and fan. You also need to add thermal grease be­tween the CPU and heatsink to improve heat dissipation. Then, make sure
that the CPU and heatsink are securely fastened and in good contact with each
other. These are needed to prevent damaging the processor and ensuring
reliable operation.

You can check AMD’s web site for more information.

performance, thermal management becomes increasingly cru­cial when building computer systems. Maintaining the proper
thermal environment is key to reliable operation. As such, the

2-3

MS-6738 Micro ATX Mainboard

CPU Installation Procedures for Socket 462

1. Please turn off the power and

unplug the power cord before
installing the CPU.

Open Lever

2. Pull the lever sideways away

from the socket. Make sure
to raise the lever up to a 90­degree angle.

3. Look for the gold arrow. The
gold arrow should point to­wards the lever pivot. The
CPU can only fit in the correct
orientation.

4. If the CPU is correctly
installed, the pins should be
completely embedded into the
socket and can not be seen.
Please note that any violation
of the correct installation
procedures may cause
permanent damages to your
mainboard.

5. Press the CPU down firmly

into the socket and close the
lever. As the CPU is likely to
move while the lever is being
closed, always close the lever
with your fingers pressing
tightly on top of the CPU to
make sure the CPU is
properly and completely
embedded into the socket.

Sliding

Plate

Gold arrow

Gold arrow

Gold arrow

Press down

the CPU

90 degree

Incorrect CPU place men t

(not at 90-degree angle)

O

X

Close
Lever

2-4

Hardware Setup

Installing AMD Athlon CPU (Socket 462) Cooler Set

The following instructions will guide
you through the heat sink installation
procedures. Please consult your agent
for the proper CPU cooler set.

1. Position your CPU cooler set onto
the CPU.

2. Use one end of the clip to hook
the latch of the CPU sliding plate.

3. Hook the other latch to fix the
cooling fan set. You may need a
screw drive to press down the
other side of the clip.

4. Connect the fan to the power sup­ply connector provided on your
mainboard.

MSI Reminds You...

Please apply some heat sink paste on top of CPU to dissipate
the heat more effectively.

Apply some heat

sink paste

2-5

MS-6738 Micro ATX Mainboard

Memory

The mainboard provides two 184-pin unbuffered PC2700/PC2100/

PC1600 DDR SDRAM or two 168-pin unbuffered PC100/133 SDRAM and
supports the memory size up to 2GB. To operate properly, at least one DIMM
module must be installed.

SDR DIMM Slots

(DIMM 3~4)

DDR DIMM Slots

(DIMM1~2)

2-6

MSI Reminds You...

Make sure that you install only one type of memory modules
(either SDR or DDR) at one time. DO NOT install both types at

the same time. For security reason, the system will automati­cally power off if you simultaneously install SDR & DDR
memory modules onboard.

Hardware Setup

DDR Module Combination

Install at least one DIMM module on the slots. Memory modules can be

installed on the slots in any order. You can install either single- or double­sided modules to meet your own needs.

Memory modules can be installed in any combination as follows:

Slot Memory Module Total Memory

DDR 1
(Bank 0 & 1) S/D 64MB~1GB

DDR 2
(Bank 2 & 3) S/D 64MB~1GB

Maximum System Memory Supported 64MB~2GB

S: Single Side D: Double Side

Installing DDR Modules

1. The DDR DIMM has only one notch on the center of module. The mod­ule will only fit in the right orientation.

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

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

Volt

Notch

MSI Reminds You...

You can barely see the golden finger if the module is properly
inserted in the socket.

2-7

MS-6738 Micro ATX Mainboard

SDR Module Combination

At least one DIMM module should be installed on the motherboard.
Memory modules can be installed on the slots in any order. The single-/double­sided memory modules that each DIMM slot supports are listed as below:

Slot Memory Module Total Memory

DIMM 1
(Bank 0 & 1) S/D 64MB~1GB

DIMM 2
(Bank 2 & 3) S/D 64MB~1GB

Maximum System Memory Supported 64MB~2GB

S: Single Side D: Double Side

Installing SDR Modules

1. The SDR DIMM slot has 2 Notch Keys “VOLT and DRAM”, so the
DIMM memory module can only fit in one direction.

2. Insert the DIMM memory module vertically into the DIMM slot. Then
push it in.

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

2-8

Volt

Notch

MSI Reminds You...

You can barely see the golden finger if the module is properly
inserted in the socket.

Hardware Setup

Power Supply

The mainboard supports ATX power supply for the power system. Be­fore inserting the power supply connector, always make sure that all compo­nents are installed properly to ensure that no damage will be caused.

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.

ATX 12V Power Connector: JPW1

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

11

1

2
4

JPW1

1
3

20

CONN1

10

JPW1 Pin Definition

PIN SIGNAL

1 GND
2 GND
3 12V
4 12V

CONN1 Pin Definition

PIN SIGNAL

1 3.3V
2 3.3V
3 GND
45V
5 GND
65V
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

2-9

MS-6738 Micro ATX Mainboard

Back Panel

The back panel provides the following connectors:

Mouse

Parallel

LAN
(Optional)

MIC

USB Ports

Keyboard

COMA VGA Port

USB Ports

L-in
L-out

Mouse Connector

The mainboard provides a standard PS/2® mouse mini DIN connector
for attaching a PS/2® mouse. You can plug a PS/2® mouse directly into this
connector. The connector location and pin assignments are as follows:

Pin Definition

6

4

2

PS/2 Mouse (6-pin Female)

5

3

1

PIN SIGNAL DESCRIPTION

1 Mouse DATA Mouse DATA
2 NC No connection
3 GND Ground
4 VCC +5V
5 Mouse Clock Mouse clock
6 NC No connection

2-10

Hardware Setup

Keyboard Connector

The mainboard provides a standard PS/2® keyboard mini DIN connec­tor for attaching a PS/2® keyboard. You can plug a PS/2® keyboard directly
into this connector.

Pin Definition

6

4

2

5

3

1

PS/2 Keyboard (6-pin Female)

PIN SIGNAL DESCRIPTION

1 Keyboard DATA Keyboard DATA
2 NC No connection
3 GND Ground
4 VCC +5V
5 Keyboard Clock Keyboard clock
6 NC No connection

USB Connectors

The mainboard provides a UHCI (Universal Host Controller Interface)
Universal Serial Bus root for attaching USB devices such as keyboard, mouse
or other USB-compatible devices. You can plug the USB device directly into
the connector.

1 2 3 4

5 6 7 8

USB Ports

USB Port Description

PIN SIGNAL DESCRIPTION

1 VCC +5V
2 -Data 0 Negative Data Channel 0
3 +Data0 Positive Data Channel 0
4 GND Ground
5 VCC +5V
6 -Data 1 Negative Data Channel 1
7 +Data 1 Positive Data Channel 1
8 GND Ground

2-11

MS-6738 Micro ATX Mainboard

Serial Port Connectors: COM A & JCOM2 (Optional)

The mainboard offers two 9-pin male DIN connectors as serial port COM
A & JCOM2 on the board. The ports are 16550A high speed communication
ports that send/receive 16 bytes FIFOs. You can attach a serial mouse or
other serial devices directly to the connectors.

1 2 3 4 5

Pin Definition

PIN SIGNAL DESCRIPTION

6 7 8 9

9-Pin Male DIN Connector

9

8

7

6

5

4

3

2

1

JCOM 2

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

VGA Connector

The mainboard provides a DB 15-pin female connector to connect a
VGA monitor.

5

15

1

11

VGA Connector

(DB 15-pin)

Pin Signal Description

1 RED
2 GREEN
3 BLUE
4 N/C
5 GND
6 GND
7 GND
8 GND
9 +5V
10 GND
11 N/C
12 SDA
13 Horizontal Sync
14 Vertical Sync
15 SCL

2-12