DFI KM400A-MLV User manual

KM400A-MLV/MV
KM400-MLV/MV
Rev. A+
System Board
User’s Manual
74600328

Copyright
This publication contains information that is protected by copyright.
No part of it may be reproduced in any form or by any means or
used to make any transformation/adaptation without the prior writ-
ten permission from the copyright holders.
This publication is provided for informational purposes only. The
manufacturer makes no representations or warranties with respect
to the contents or use of this manual and specifically disclaims any
express or implied warranties of merchantability or fitness for any
particular purpose. The user will assume the entire risk of the use
or the results of the use of this document. Further, the manufac-
turer reserves the right to revise this publication and make changes
to its contents at any time, without obligation to notify any person
or entity of such revisions or changes.
© 2003. All Rights Reserved.
Trademarks
Windows®98, Windows®98 SE, Windows®ME, Windows®2000,
Windows NT®4.0 and Windows®XP are registered trademarks of
Microsoft Corporation. AMD, AthlonTM XP and AthlonTM are regis-
tered trademarks of Advanced Micro Devices, Inc. VIA®is a regis-
tered trademark of VIA Technologies, Inc. Award is a registered
trademark of Award Software, Inc. Other trademarks and registered
trademarks of products appearing in this manual are the properties
of their respective holders.
Caution
To avoid damage to the system:
• Use the correct AC input voltage range.....
To reduce the risk of electric shock:
• Unplug the power cord before removing the system chassis
cover for installation or servicing. After installation or servicing,
cover the system chassis before plugging the power cord.

Battery:
• Danger of explosion if battery incorrectly replaced.
• Replace only with the same or equivalent type recommend by
the manufacturer.
• Dispose of used batteries according to the battery manufactur-
er’s instructions.
FCC and DOC Statement on Class B
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
residential installation. This equipment generates, uses and can radi-
ate radio frequency energy and, if not installed and used in accord-
ance with the instruction manual, may cause harmful interference to
radio communications. However, there is no guarantee that interfer-
ence 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 following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the re-
ceiver.
• 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 TV 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.
2. Shielded interface cables must be used in order to comply with
the emission limits.

Notice
This user’s manual contains detailed information about the system
board. If, in some cases, some information doesn’t match those
shown in the multilingual manual, the multilingual manual should al-
ways be regarded as the most updated version. The multilingual
manual is included in the system board package.
To view the user’s manual, insert the CD into a CD-ROM drive.
The autorun screen (Mainboard Utility CD) will appear. Click the
“TOOLS” icon then click “Manual” on the main menu.
System Board
This user’s manual is for the KM400A-MV/MLV and KM400-MV/
MLV system boards. The differences between these boards are
shown below.
KM400A-MV/MLV VIA KM400A
Up to 400MHz FSB
Up to DDR400
“MLV” supports onboard LAN
KM400-MV/MLV VIA KM400
Up to 333MHz FSB
Up to DDR333
“MLV” supports onboard LAN

Table of Contents
Chapter 1 - Introduction
1.1 Features and Specifications.....................................................................
1.2 Package Checklist.........................................................................................
Chapter 2 - Hardware Installation
2.1 System Board Layout ...............................................................................
2.2 System Memory............................................................................................
2.3 CPU......................................................................................................................
2.4 Jumper Settings..............................................................................................
2.5 Rear Panel I/O Ports..................................................................................
2.6 I/O Connectors.............................................................................................
Chapter 3 - BIOS Setup
3.1 Award BIOS Setup Utility........................................................................
3.2 Updating the BIOS....................................................................................
Chapter 4 - Supported Softwares
4.1 Desktop Management Interface..........................................................
4.2 Drivers, Utilities and Software Applications.................................
4.3 6-Channel Audio Output via Software..........................................
4.4 Installation Notes..........................................................................................
7
14
48
87
15
19
21
25
28
38
89
92
101
103

Introduction
1
6
Appendix A - Using the Suspend to RAM
Function
A.1 Using the Suspend to RAM Function...............................................
Appendix B - System Error Messages
B.1 POST Beep.......................................................................................................
B.2 Error Messages...............................................................................................
Appendix C - Troubleshooting
C.1 Troubleshooting Checklist........................................................................
108
108
104
110

1
Introduction
7
1.1 Features and Specifications
1.1.1 Features
Chipset
• KM400A-MV/MLV
- North bridge: VIA®KM400A
- South bridge: VIA®VT8237
• KM400-MV/MLV
- North bridge: VIA®KM400
- South bridge: VIA®VT8237
Processor
The system board is equipped with Socket-A for installing one of
the following supported processors.
• AMD AthlonTM XP 266/333/400MHz FSB (KM400A-MV/MLV)
AMD AthlonTM XP 266/333MHz FSB (KM400-MV/MLV)
• AMD AthlonTM 200/266MHz FSB
Important:
To ensure proper boot up and operation of your system, you
must power-off the system then turn off the power supply’s
switch or unplug the AC power cord prior to replacing the CPU.
System Memory
• Two 184-pin DDR SDRAM DIMM sockets
• KM400A-MV/MLV supports up to 2GB memory using PC1600
(DDR200), PC2100 (DDR266), PC2700 (DDR333) and
PC3200 (DDR400) DDR SDRAM DIMM, 2.5V type
KM400-MV/MLV supports up to PC2700 (DDR333) only.
Chapter 1 - Introduction
DIMMs
2MBx64
4MBx64
8MBx64
Memory Size
16MB
32MB
64MB
DIMMs
16MBx64
32MBx64
64MBx64
Memory Size
128MB
256MB
512MB

Introduction
1
8
Expansion Slots
• 1 AGP slot
• 3 PCI slots
AGP (Accelerated Graphics Port)
AGP is an interface designed to support high performance 3D
graphics cards. It utilizes a dedicated pipeline to access system
memory for texturing, z-buffering and alpha blending. The universal
AGP slot supports AGP 8x with up to 2.13GB/sec. bandwidth and
AGP 4x with up to 1066MB/sec. bandwidth for 3D graphics applica-
tions. AGP in this system board will deliver faster and better graph-
ics to your PC.
Onboard Graphics Features
• Integrated S3 2D/3D/Video accelerator
- Shares 8MB to 64MB of the system memory
- Optimized Shared Memory Architecture (SMA)
- High quality DVD video playback
• 3D rendering features
- 32-bit true color rendering
- MPEG-2 video textures
• 2D hardware acceleration features
• Motion video architecture
• Software drivers
- Windows®98/2000/ME/XP
Onboard LAN Features (KM400A-MLV/KM400-MLV only)
• Phy fast ethernet controller
• Integrated IEEE 802.3, 10BASE-T and 100BASE-TX compatible
PHY
• PCI master interface
• Full duplex support at both 10 and 100 Mbps
• Supports IEEE 802.3u auto-negotiation
• Supports wire for management

1
Introduction
9
Onboard Audio Features
• Realtek 6-channel codec
• AC’97 2.2 extension compliant codec
• Supports Microsoft®DirectSound / DirectSound 3D
• AC’97 supported with full duplex, independent sample rate con-
verter for audio recording and playback
• S/PDIF-out interface
• 6-channel audio output
S/PDIF-out
S/PDIF is a standard audio file transfer format that transfers digital
audio signals to a device without having to be converted first to an
analog format. This prevents the quality of the audio signal from
degrading whenever it is converted to analog. S/PDIF is usually
found on digital audio equipment such as a DAT machine or audio
processing device.The S/PDIF connector on the system board sends
surround sound and 3D audio signal outputs to amplifiers and
speakers and to digital recording devices like CD recorders.
6-channel Audio
The 6-channel audio output function is supported by configuring
the audio software application program.
Serial ATA
Serial ATA is a storage interface that is compliant with SATA 1.0
specification. With speed of up to 1.5Gbps, it improves hard drive
performance even in data intensive environments such as audio/
video, consumer electronics and entry-level servers.
• Two SATA (Serial ATA) interfaces which are compliant with
SATA 1.0 specification (1.5Gbps interface)
PCI Bus Master IDE Controller
• Supports ATA/33, ATA/66, ATA/100 and ATA/133 hard drives
• UDMA Modes 3, 4, 5 and 6 Enhanced IDE (data transfer rate
up to 133MB/sec.)
• Bus mastering reduces CPU utilization during disk transfer
• Supports ATAPI CD-ROM, LS-120 and ZIP

Introduction
1
10
USB Ports
The system board supports USB 2.0 and USB 1.1. USB 1.1 sup-
ports 12Mb/second bandwidth while USB 2.0 supports 480Mb/sec-
ond bandwidth providing a marked improvement in device transfer
speeds between your computer and a wide range of simultaneously
accessible external Plug and Play peripherals.
BIOS
• Award BIOS, Windows®98/2000/ME/XP Plug and Play compat-
ible
• Supports SCSI sequential boot-up
• Flash EPROM for easy BIOS upgrades
• Supports DMI 2.0 function
• 2Mbit flash memory
Desktop Management Interface (DMI)
The system board comes with a DMI 2.0 built into the BIOS. The
DMI utility in the BIOS automatically records various information
about your system configuration and stores these information in the
DMI pool, which is a part of the system board's Plug and Play BIOS.
DMI, along with the appropriately networked software, is designed
to make inventory, maintenance and troubleshooting of computer
systems easier. Refer to chapter 4 for instructions on using the DMI
utility.
Rear Panel I/O Ports (PC 99 color-coded connectors)
• Four USB 2.0/1.1 ports
• One RJ45 LAN port (KM400A-MLV/KM400-MLV only)
• One DB-9 serial port
• One DB-15 VGA port
• One DB-25 parallel port
• One mini-DIN-6 PS/2 mouse port
• One mini-DIN-6 PS/2 keyboard port
• Three audio jacks: line-out, line-in and mic-in

1
Introduction
11
I/O Connectors
• Two connectors for 4 additional external USB 2.0/1.1 ports
• One front audio connector for external line-out and mic-in jacks
• One CD-in internal audio connector
• One S/PDIF-out connector
• Two SATA connectors
• Two IDE connectors
• One floppy connector
• Two ATX power supply connectors
• CPU fan and system fan connectors
1.1.2 Intelligence
CPU Protection
• Monitors CPU temperature during system boot-up
• Supports shutdown temperature - automatic shutdown upon
system overheat
Dual Function Power Button
Depending on the setting in the “Soft-Off By PWRBTN” field of the
Power Management Setup, this switch will allow the system to enter
the Soft-Off or Suspend mode.
Wake-On-Ring
This feature allows the system that is in the Suspend mode or Soft
Power Off mode to wake-up/power-on to respond to calls coming
from an external modem or respond to calls from a modem PCI
card that uses the PCI PME (Power Management Event) signal to
remotely wake up the PC.
Important:
If you are using a modem add-in card, the 5VSB power source
of your power supply must support a minimum of ≥ 720mA.

Introduction
1
12
Wake-On-LAN
This feature allows the network to remotely wake up a Soft Power
Down (Soft-Off) PC. It is supported via the onboard LAN port or
via a PCI LAN card that uses the PCI PME (Power Management
Event) signal. However, if your system is in the Suspend mode, you
can power-on the system only through an IRQ or DMA interrupt.
Important:
The 5VSB power source of your power supply must support
≥ 720mA.
Wake-On-PS/2 Keyboard/Mouse
This function allows you to use the PS/2 keyboard or PS/2 mouse
to power-on the system.
Important:
The 5VSB power source of your power supply must support
≥ 720mA.
Wake-On-USB
This function allows you to use a USB device to wake up the sys-
tem.
Important:
• If you are using the Wake-On-USB function for 2 USB ports,
the 5VSB power source of your power supply must support
≥ 1.5A.
• If you are using the Wake-On-USB function for 3 or more
USB ports, the 5VSB power source of your power supply
must support ≥ 2A.
RTC Timer to Power-on the System
The RTC installed on the system board allows your system to auto-
matically power-on on the set date and time.

1
Introduction
13
AC Power Failure Recovery
When power returns after an AC power failure, you may choose to
either power-on the system manually or let the system power-on
automatically.
ACPI
The system board is designed to meet the ACPI (Advanced Con-
figuration and Power Interface) specification. ACPI has energy saving
features that enables PCs to implement Power Management and
Plug-and-Play with operating systems that support OS Direct Power
Management. Currently, only Windows®®
®®
®98/2000/ME/XP supports
the ACPI function allowing you to use the Suspend to RAM func-
tion.
With the Suspend to RAM function enabled, you can power-off the
system at once by pressing the power button or selecting “Standby”
when you shut down Windows®®
®®
®98/2000/ME/XP without having to
go through the sometimes tiresome process of closing files, applica-
tions and operating system. This is because the system is capable of
storing all programs and data files during the entire operating ses-
sion into RAM (Random Access Memory) when it powers-off. The
operating session will resume exactly where you left off the next
time you power-on the system.
Important:
The 5VSB power source of your power supply must support
≥ 1A.
Virus Protection
Most viruses today destroy data stored in hard drives. The system
board is designed to protect the boot sector and partition table of
your hard disk drive.

Introduction
1
14
1.2 Package Checklist
The system board package contains the following items:
;The system board
;A user’s manual
;One Serial ATA cable
;One IDE cable for ATA/33/66/100/133 IDE drives
;One 34-pin floppy disk drive cable
;One I/O shield
;One “Mainboard Utility” CD
If any of these items are missing or damaged, please contact your
dealer or sales representative for assistance.

15
2
Hardware Installation
2.1 System Board Layout
Chapter 2 - Hardware Installation
KM400A-MLV
(Supports onboard LAN)

16
2Hardware Installation
KM400A-MV

17
2
Hardware Installation
KM400-MLV
(Supports onboard LAN)

18
2Hardware Installation
Note:
The illustrations on the following pages are based on the system
board that supports onboard LAN.
KM400-MV

19
2
Hardware Installation
2.2 System Memory
Warning:
Electrostatic discharge (ESD) can damage your system board, proces-
sor, disk drives, add-in boards, and other components. Perform the
upgrade instruction procedures described at an ESD workstation only.
If such a station is not available, you can provide some ESD protection
by wearing an antistatic wrist strap and attaching it to a metal part
of the system chassis. If a wrist strap is unavailable, establish and
maintain contact with the system chassis throughout any procedures
requiring ESD protection.
The system board supports DDR SDRAM DIMM. Double Data
Rate SDRAM (DDR SDRAM) is a type of SDRAM that doubles
the data rate through reading and writing at both the rising and
falling edge of each clock. This effectively doubles the speed of
operation therefore doubling the speed of data transfer.
Refer to chapter 1 (System Memory section) for detailed specifi-
cation of the memory supported by the system board.
BIOS Setting
Configure the system memory in the Advanced Chipset Features
submenu (“DRAM Clock/Drive Control” section) of the BIOS.
.
.
.
.
.
.
.
.
DDR 1
DDR 2

20
2Hardware Installation
2.2.1 Installing the DIM Module
A DIM module simply snaps into a DIMM socket on the system
board. Pin 1 of the DIM module must correspond with Pin 1 of
the socket.
1. Pull the “tabs” which are at the ends of the socket to the
side.
2. Position the DIMM above the socket with the “notch” in the
module aligned with the “key” on the socket.
3. Seat the module vertically into the socket. Make sure it is
completely seated. The tabs will hold the DIMM in place.
Pin 1
Notch
Key
Tab Tab