VIA Technologies KM400 Gebrauchsanweisung

TRADEMARK

All products and company names are trademarks or registered

trademarks of their respective holders.

These specifications are subject to change without notice.

Manual Revision 1.1

March 25, 2005

60000018KMX11

VIAVIA

VIA KM400KM400

KM400KM400

KM400 mainboardmainboard

mainboardmainboard

mainboard

for AMD Socket A processorfor AMD Socket A processor

for AMD Socket A processor

Quick UserQuick User

Quick User’s’s

’s’s

’s

GuideGuide

Guide

Quick UserQuick User

Quick User’s’s

’s’s

’s

GuideGuide

Guide

English

DISCLAIMER OF WARRANTIES:

THEREARENOWARRANTIESWHICHEXTENDBEYONDTHE

DESCRIPTION ON THE FACE OF THE MANUFACTURER LIMITED

WARRANTY.THEMANUFACTUREREXPRESSLYEXCLUDES ALL

OTHERWARRANTIES,EXPRESS OR IMPLIED,REGARDING ITS

PRODUCTS;INCLUDING ANY IMPLIED WARRANTIES OF

MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR

NONINFRINGEMENT.THIS DISCLAIMER OFWARRANTIES SHALL

APPLY TO THE EXTENT ALLOWED UNDER LOCAL LAWS IN THE

COUNTRY PURCHASED IN WHICH LOCAL LAWS DO NOT ALLOW

OR LIMIT THE EXCLUSION OF THE IMPLIED WARRANTIES.

English

Processor Support

Supports 462-pin Socket A for AMD Athlon XP processors with 266/333MHz

Front Side Bus

Chipset

VIA KM400 + VT8237 Chipset

- with VIA Unichrome Graphics core

Main Memory

Two 184-pin DDR DIMM sockets for PC2100/PC2700 (DDR266/333) DIMMs

Supports up to 2GB memory size

BIOS

Flash EEPROM with Award BIOS

- ACPI v2.0 compliant

- SMBIOS (System Management BIOS) v2.2 compliant

LAN

Integrates 10/100Mps Fast Ethernet controller with onboard VIA 6103 PHY LAN

Legacy IO Support

Winbond W83697HF LPC IO controller with floppy, printer, serial and CIR/SIR

interface

Audio

Six channel audio with analog and digital output using Realtek ALC655 AC’97 CODEC

- AC’97 v2.3 compliant

- Supports CD-In, Aux-In

- Supports Line-out and Mic-In for front panel

- Supports automatic “jack-sensing”

- Rear panel audio jacks configuration:

Expansion Slots

One AGP v3.0 compliant slot supporting 1.5v 8X AGP card

Three PCI v2.2 compliant slots with Bus Master support

One CNR slot

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1. Specification

English

Other Features

Magic Health – a BIOS H/W monitoring utility for voltage, temperature and fan-

speed sensing displayed during POST

EZ Boot – A simple shortcut to select the boot device, e.g. hard drive, CD-ROM

or floppy without entering CMOS setup

Supports exclusive KBPO (Keyboard Power On) function

Form Factor

244mm x 220 mm Micro-ATX size

1.2 Block Diagram

English

2. Setting up the mainbaord

Before assembling the mainboard into the PC case we recommend you to perform.

1. CPU Installation

2. DDR Memory Insertion

After the mainboard is fitted into the case, you may

3. Install Add-on VGA Or PCI cards

4. Connect the internal cables and wires

5. Connect your external peripherals to the rear I/O port

Step 1

Open the socket by raising the actuation

lever.

Step 2

Align pin 1 on the CPU with pin 1 on the

CPU socket as shown above. Insert the

CPU and make sure it is fully inserted into

the socket.

3.1 CPU Installation

3. Installation

The CPU is keyed to prevent incorrect insertion, do not

force the CPU into the socket. If it does not go in easily,

check for mis-orientation.

English

3.2 DDR Memory Insertion

The mainboard accommodates two PC2100/PC2700 184-pin DIMMs (Dual In-line

Memory Modules):

• Supports up to 2.0GB of 266/333MHz DDR SDRAM.

• Supports unbuffered non-ECC DIMMs.

•DDR SDRAM supports 64, 128, 256, 512MB and 1GB DIMM modules.

• Supports DRAM configurations defined in the JEDEC DDR DIMM specification.

Step 3

Close the socket by lowering and locking the

actuation lever.

Step 4

Install the cooling fan assembly.

• Installing without a cooling fan will cause CPU overheat and damage the CPU.

• Apply heatsink thermal compound/paste to the CPU.

To install, align the notch on the

DIMM module with the connector.

Press straight down as shown in the

figure until the white clips close and

the module fits tightly into the

DIMM socket.

Notch

English

3.3 VGA and PCI card installation

To install a VGA card into the AGP slot or a PCI expansion card:

1. Remove the bracket (on the PC case) for the slot you intend to use.

2. Firmly press down the card into the slot until it is completely seated. For an AGP

card ensure the AGP slot clicker is locked as shown in the picture below.

3. Secure the card's bracket to the PC case with a screw.

The AGP slot supports only newer VGA cards with 1.5V specifications.

English

3.5 Internal Connectors

3.4 Rear IO Port

COM1

Parallel Port RJ-45

LAN

USB2.0 ports

PS/2

Mouse

PS/2

Keyboard Mic-in/Center&Subwoofer (Pink)

Line-out/Front out (Lime)

Line-in/Rear out (Light blue)

VGA1

English

Connectors Figure Discriptions

Ground

+12V

Sense

JCPU_FAN

JSYS_FAN

CPU / System Fan Power Connectors

JCPU_FAN: The CPU must be kept cool by

using a heatsink with fan assembly.

JSYS_FAN: Use this connector if you are

installing an additional fan in the unit.

2FDD Floppy Drive Connector

3IDE1

Primary IDE

IDE2

Secondary IDE

Primary/Secondary IDE Connector

Connects to the IDE device, i.e. HDD and CD-

ROM device.

4PW1

-12V3.3V

Ground+5V

PS-ON+5V

-5VPW-OK

+5V5VSB

+5V+12V

3.3V3.3V

GroundGround

PW1: 20-pin ATX Power Connector

The plugs of the power cables are designed to fit

in only one orientation.

5CFPA

Rear Line-out-FR

Front Line-out-R

Rear Line-out-FL

Front Line-out-L

MIC_In

NC +5V

Key

GND

CFPA: Front Panel Audio Connector

This connector is used only if the speaker and

microphone needs to be plugged at the front of

the PC case. Otherwise, leave the jumpers at the

default position.

1When using two IDE drives on the same

connector, one must be set to Master

mode and the other to Slave mode.

Refer to your disk drive user’s manual

for details.

CD-IN/AUX-IN: CD Audio-in connectors

These connectors are used to receive audio form a

CD-ROM drive, TV tuner or MPEG card.

CD_IN_Left

CD_IN_Right

CD_Reference

AUX_IN_Left

AUX_IN_Right

GND

CD-IN

AUX-IN

English

Connectors Figure Discriptions

8CFP

CFP: Case Front Panel Connector

HD_LED

This LED indicates hard drive activity.

PWR_LED

Connects to the power indicator on the PC case.

RST

Connects to the RESET switch on the PC case.

PW_ON

Connects to the Power button on the PC case, to

turn on the system. To turn off the system,

press the power button for 4 seconds.

CIR

CSPK

CIR: IR connector

For connection to an IrDA receiver unit.

CSPK: Speaker

Connects to the case’s speaker for PC beeps.

Settings:

1-2: Normal (Default)

2-3: Clear CMOS

JCMOS: Clear CMOS data Jumper

This resets the BIOS CMOS data back to the

factory default values. Recommend to leave at

Normal (default) postion.

JCMOS

7CUSB3

CUSB4

CUSB3/CUSB4: Four USB2.0 header

This mainboard includes 4 additional onboard

USB ports.

To use these additional USB ports, a USB bracket

is required. Please contact your retailer for details.

GND

A-B-

B+

GND

A+

GND

9SATA1

SATA2

SATA1 / SATA2: Two Serial ATA Connectors

These connectors enable you to connect Serial

ATA devices that conform to the Serial ATA

specification.

JCK1 JCK2 Settings:

1-2 1-2 100MHz (Default)

2-3 1-2 133MHz

2-3 2-3 166MHz

JCK1/JCK2: CPU FSB Select Jumper

This jumper is used to select the front side

bus of the CPU installed on the mainboard.

JCK1

JCK2

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