EPOX EP-5ATXA-M Technical information

TRADEMARK

All products and company names are

trademarks or registered trademarks of

their respective holders.

The specification is subject to change without notice.

EP-5ATXA-M

ISA PCI

MainBoard

with Onboard PCI IDE and Super Multi-I/O.

82430TX PCIset

V023

User Notice

No part of this product, including the product and software may be reproduced, transmit-

ted, transcribed, stored in a retrieval system, or translated into any language in any form

by any means with the express written permission of EPoX Computer Company (herein-

after referred to as EPoX) except documentation kept by the purchaser for backup

purposes. EPoX provedes this manual "as is" without warranty of any kind, either express

or implied, including but not limited to the implied warranties or conditions of

merchantability or fitness for a particular purpose. In no event shall EPoX be liable for

any loss or profits, loss of business, loss of use or data, interruption of business or for

indirect, special incidental, or consequential damages of any kind, even if EPoX has been

advised of the possibility of such damages arising from any defect or error in the manual

or product. EPoX may review this manual from time to time without notice. For updated

BIOS, drivers, or products release information you may visit EPoX’s home page at:

http://www.epox.com.

Products mentioned in this manual are mentioned for identification purposes only. Prod-

uct names appearing in this manual may or may not be registered trademarks of copy-

rights of their respective companies.

The product name and revision number are both printed on the mainboard itself.

Handling Procedures

Static electricity can severely damage your equipment. Handle the EP-5ATXA-M

and any other device in your system with care and avoid contact with components on the

card. Always work on an antistatic surface to avoid possible damage to the card from

static discharge. The packing material placed on a table top makes a good antistatic

work surface. We assume no responsibility for any damage to the EP-5ATXA-M

mainboard that results from failure to follow installation instructions or failure to observe

safety precautions.

CAUTION

The EP-5ATXA-M mainboard is subject to

damage by static electricity. Always

observe the handling procedures.

Package Checklist

Please make sure your package which should include all items listed

below. If you find any item damaged or missing items, please contact

your supplier.

One IDE ribbon cable

One floppy ribbon cable

One manual

One Mainboard

Contents

page

Chapter 1 - Introduction................................................... 1-1

Chapter 2 - Hardware Design ......................................... 2-1

2-1 Overview ..................................................................2-1

2-2 Connectors and Jumpers ............................................2-3

2-3 Real Time Clock Battey Replacement ..........................2-7

2-4 System Memory Configuration ...................................2-8

2-5 Cache Memory Configuration ....................................2-9

2-6 Integrated PCI Bridge .................................................2-10

Chapter 3 - ATX Form -Factor Overview

3-1 External Madem Ring-in Power-On and Keyboard Power-

On Functions ................................................ 3-3

Chapter 4 - Award BIOS Setup ........................................ 4-1

4-1 Standard CMOS Setup ...............................................4-2

4-2 BIOS Features Setup ..................................................4-2

4-3 Chipset Features Setup...............................................4-6

4-4 Power Management Setup ..........................................4-8

4-5 Plug & Play/PCI Configuration....................................4-11

4-6 Integrated Peripherals.................................................4-14

4-7 Load Setup Defaults ...................................................4-16

4-8 Change Supervisor or User Password .........................4-17

4-9 IDE HDD Auto Detection ...........................................4-18

4-10 HDD Low Level Format ..............................................4-20

4-11 Save & Exit Setup .......................................................4-20

4-12 Exit Without Saving ....................................................4-20

Chapter 5 - Technical Information ....................................5-1

5-1 I/O & Memory Map ....................................................5-1

5-2 Time & DMA Channels Map ......................................5-2

5-3 Interrupt Map.............................................................5-2

5-4 RTC & CMOS RAM Map ...........................................5-3

Appendix A: POST Codes...................................................................5-4

Appendix B: I/O Connectors...............................................................5-8

System Block Diagram ............................................. 1-3

EP-5ATXA-M Layout .............................................. 1-4

LOAD SETUP DEFAULT

ROM PCI/ISA BIOS

CMOS SETUP UTILITY

AWARD SOFTWARE, INC.

Load SETUP Default (Y/N)? Y

STANDARD CMOS SETUP SUPERVISOR PASSWORD

BIOS FEATURES SETUP USER PASSWORD

CHIPSET FEATURES SETUP IDE HDD AUTO DETECTION

POWER MANAGEMENT SETUP HDD LOW LEVEL FORMAT

PNP/PCI CONFIGURA ETUP

INTEGRATED PERIPH SAVING

LOAD SETUP DEFAULTS

ESC: QUIT :SELECT ITEM

F10:Save & Exit Setup (Shift)F2 :Change Color

Load Setup Defaults Except Standard COMS SETUP

1. The "LOAD SETUP DEFAULTS" function loads the system default data directly from

ROM and initializes the associated hardware properly. This function is necessary

when you accept this mainboard, or the system CMOS data will corrupt.

Read me first

2. KBPO(KeyBoard Power On) Function : There is a basic requirement that the

" +5V SB" power of the ATX power supply must be > = 0.1A (100mA).

Please refer to chapter 3 -1 for detail.

Introduction 1-1

Chapter 1

Introduction

R

The EP-5ATXA-M mainboard is a high performance system hardware

based on Intel Pentium processor and is equipped with four PCI slots, four

standard ISA slots, a PnP Super I/O controller and two dual-port PCI-IDE

connectors for the future expansion. The hardware dimension is an ATX

form-factor that is 208mm x 305mm with a four-layer design technology.

Specification

Intel 82430TX PCIset chipset.

Intel Pentium Processor, Pentium Processor with MMX

TM

technology,

AMD K5/K6 and Cyrix 6x86/6x86L/6x86MX operating at 90 ~ 333 MHz(Easy

CPU CLK Setting JP3 : One Jumper Only) with 321ZIF socket 7 provides

scalability to accept faster processors in the future.

Supports an onboard Switching Voltage Regulator to increase CPU and

systems reliability.

Supports CPU Vcore Voltage 2.0V/2.2V/2.8V/2.9V/3.2V selection.

Supports up to 256 MegaBytes of DRAM (a minimum of 8 MB) on board (72-

Pin SIMM x 2 and 168-Pin DIMM x 3). BIOS will autometically detect and

configure FP DRAM, EDO DRAM and SDRAM (Refer to Chapter 2-4,

System Memory Configuration).

Supports Onboard Pipelined burst synchronous L2 Write Back Cache. The

cache memory is 512KB (64KB*32 SRAM).

Supports four 16-bit ISA slots and four 32-bit PCI slots and provides two

independent high performance PCI IDE interfaces capable of supporting PIO

Mode 3 and Mode 4 devices.

Supports ATAPI (e.g. CD-ROM) devices and Ultra DMA 33 Harddisk for

both IDE interfaces.

Supports 1 floppy port, 1 parallel port (EPP,ECP port), and 2 serial ports

(16550 Fast UART compatible) with PnP Super I/O chip.

Supports both PS/2 style mouse and PS/2 style AT keyboard connectors.

Supports Award Plug & Play BIOS. The BIOS is stored in Flash EPROM

form. It provides better upgradeability for the system.

Supports a CPU Hardware sleep and SMM (System Management Mode)

function.

Supports a PWR/ON connector with an ATX power supply for a Remote ON/

OFF controller, a Ring-in (External Modem only) Power-ON and a Keyboard

Power-ON and Mouse Power-ON function.

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1-2 EP-5ATXA-M

Software power-down when using Windows 95.

Supports Resume by Alarm-Allows your system to turn on at a preselected time.

Supports USDM(Unifed System Diagnostic Manager) to monitor system CPU

Fan speed, chassis Fan Speed, CPU temperature, System temperature, CPU

Voltage and power Supply Voltage in Windows 95 or NT 4.0.

Supports YAMAHA YMF-715 Audio with 3D sound.

Supports the system power LED lights when the system is powered on and

blinks in sleep or suspend mode.

Supports the CPU chassis Fan Stop when the system in sleep or suspend

mode.(The Fan power must be Supplies by onboard J4, J5, J6 connector)

Supports the Universal Serial Bus(USB) Connector onboard.

Utilizes a Lithium battery which provides environmental protection and

longer life-time.

Supports a CPU temperature alarm sound Effect so that when CPU's cooling fan

is malfunc tioning or CPU overheats, CPU speed will automatically slow down.

Supports a dual-button configuration which consists of POWER button for Off/

On transitions and SLEEP button for Sleep/Wake transitions. The configuration

is for ACPI-defined 4-second override feature of the SLEEP button. When the

user presses the power button for less than 4 seconds, the system enters into

sleep mode. When the user presses the power button for more than 4 seconds,

the system is powered off.

R

Introduction 1-3

Pentium

processor

PIIX4

I/O Bridge

324 BGA

IDE HDD

Graphics

Port_A

Port_B

>

Universal Serial Bus

ISA Slots

R

>

PCI Slots

>

PB

SRAM

TAG

<

Control

TAG Control

PCI BUS

Super

I/O

Serial 1

Serial 2

FDD

Printer

>

HOST BUS

BIOS

Flash EPROM

<

MD[63:0]

>

MTXC

HOST Bridge

324 BGA

MA[11:0]

CONTROL

Figure 1-2 System Block Diagram

IDE CD-ROM

Audio

Hardware Design 2-1

Chapter 2

Hardware design

2-1 Overview

The EP-5ATXA-M is designed with Intel 82430TX PCIset chipset which is

developed by Intel Corporation to fully support Pentium Processor PCI/ISA system.

The Intel 82430TX PCIset chipset can increase integration and improve performance

designs. The chipset provides an integrated IDE controller with two high performance

IDE interfaces for up to four IDE devices (hard devices, CD-ROM device, etc). The

PnP Super I/O controller provides the standard PC I/O functions: a floppy interface,

two 16-byte FIFO serial ports and an EPP/ECP capable parallel port. The EP-5ATXA-

M layout is shown in the previous page for user's reference. Care must be taken

when inserting memory modules, inserting CPU or even plugging PCI card into the

associated slots to avoid damaging any circuits or sockets on board. A cooling fan is

strongly recommended when installing P54C/P54CTB/P55C (MMX)/K5/K6/6x86

(6x86L)/6x86MX processor due to possible overheat. The EP-5ATXA-M supports

CPU temperature monitor and alarm to prevent CPU's cooling fan from malfunction or

CPUoverheat. There is a heat sensor to monitor CPU temperature. If CPU overheats,

then speaker will alarm and CPU will slow down to save your data and shutdown the

system.

The EP-5ATXA-M supports a minimum of 8MB of system memory and a

maximum of 256MB with 512KB synchronous SRAM onboard to increase system

performance.

The EP-5ATXA-M supports standard Fast Page, EDO (Extended Data Out or

Hyper Page Mode) or synchronous DRAM. The EP-5ATXA-M provides two 72-

pin SIMM and three 168-pin DIMM sites for memory expansion. Each socket sup-

ports 1M x 32 (4MB), 2M x 32 (8MB), 4M x 32 (16MB), and 8M x 32 (32MB) single-

sided or double-sided memory modules. The memory timing requires 70 ns for Fast

Page devices or 60 ns for EDO DRAM. This mainboard has three 168-pin DIMM sites

to support 3.3V (power level) Unbuffered Synchronous DRAMs(SDRAM) and two

72-pin SIMM sites to support 5.0V (power level) Fast Page and EDO DRAM. Memory

parity generation and checking are not supported. (DRAM Modules may be parity[x

36] or non-parity[x 32].

The EP-5ATXA-M supports two Onboard PCI IDE connectors that can support PIO

Mode/Ultra DMA 33 device and automatically detect IDE harddisk type by BIOS

utility.

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2-2 EP-5ATXA-M

The EP-5ATXA-M supports Award Plug & Play BIOS for the ISA and PCI cards. The

BIOS can be located in Flash EPROM. The advantage of having Flash EPROM is

much easier to replace BIOS code if necessary.

The EP-5ATXA-M has been designed with ATX form-factor with ATX power

connector. The mainboard layout and system block diagram are shown in Figure 1-1

and Figure 2-1.

The EP-5ATXA-M has been designed the hardware monitoring to allows you to

monitor various aspects of your system perations and status. These indlude fcatures

such as CPU temerature, system temperature, voltage and fan RPM's.

The EP-5ATXA-M Supports Yamaha YMF715B onboard design. Built-in the

OPL3(FM-synthesizer), 3D Enhanced Controller (3D Sound effect) and Sound Blaster

Game compatibility.

The EP-5ATXA-M

Hardware Design 2-3

Figure 2-1

ATX Power Conn.

Winboand

83977F

M1

M2

PCI#3

PCI#2

PCI#1

PCI#4

<

BIOS

SLEEP SPEAKERTB-LED

G-LED RESET KEYLOCKHD-LED

PW-ON

EP-5ATXA-M Layout

FDD CONN.

Secondary IDE

IR CONN

5 1

JP3

1 25

26

BANK0

SIMM 2

SIMM 1

1

3

JP1

2

PIIX4

MTXC

SOCKET 7

Primary IDE

J3

J9

J2

FDD1

IDE1

J15

J6

64K*64

SRAM

COM1

PS/2

MOUSE

K/B

PRINTER PORT

COM2

USB

PORT

M3

YMF715B-S

1

3

JP13

1

5

JP2

6

10

BANK1

BANK2

J4 J5

Line-Out

Line-In

Mic

IDE2

2-4 EP-5ATXA-M

2-2 Connectors and Jumpers

This section describes all of the connectors and jumpers equipped in the mainboard.

Please refer to Figure 2-1 for the location of each connector and jumper.The figure

in the following means connecting pin 1&2 and means connecting pin 2&3.

Jumpers with two pins are shown as for open and for close.

27 28

1 2

JP3:CPU Clock Rate Select. (Easy-Setting-Single-Jumper)

These jumper settings are reserved for the future CPU

versions. When the future CPU versions are ready and

suitable for this mainboard, these jumper settings will be

correctly updated.

*

Pentium Bus Freqency

Pentium MMX x Cyrix 6x86(L) / 6x86MX

AMD K5 / K6 Multiplier IBM 6x86(L) / 6x86MX

JP3

1-2 90MHz 60MHz x 1.5

3-4 100MHz 66MHz x 1.5

5-6 120MHz 60MHz x 2 6x86/L-PR150

7-8 133MHz 66MHz x 2 6x86/L/MX-PR166

9-10 75MHz x 2 6x86/L/MX-PR200

11-12 150MHz 60MHz x 2.5 6x86MX-PR166

13-14 166MHz 66MHz x 2.5 6x86MX-PR200

15-16 188MHz 75MHz x 2.5 6x86MX-PR233

17-18 200MHz 66MHz x 3 6x86MX-PR233

19-20 225MHz 75MHz x 3 6x86MX-PR266

21-22 233MHz 66MHz x 3.5 6x86MX-PR266

23-24 266MHz 66MHz x 4

25-26 300MHz 66MHz x 4.5

27-28 333MHz 66MHz x 5

*

JP2 CPU Vcore voltage selection for Pentium MMX / AMD K6 / Cyrix

6x86L or 6x86MX

1-6 : 2.0V for AMD K6 fast processor (Reserved)

2-7 : 2.8V for Pentium MMX or Cyrix 6x86L

3-8 : 2.9V for AMD K6-PR166/PR200 or Cyrix 6x86MX

4-9 : 3.2V for AMD K6-PR233/PR266

5-10 : 2.2V for AMD K6 fast processor(Reserved)

5 10

1 6

2.0V

2.8V

3.2V

(Default)

2.2V

2.9V

Hardware Design 2-5

KeyLock - Keyboard lock switch & Power LED connector.

1. Power LED(+)

2. N/C

3. GND

4. Keylock

5. GND

Speaker - connect to the system's speaker for beeping.

7. Speaker

8. N/C

9. GND

10. VCC

Reset - Close to restart system.

Turbo LED indicator - LED ON when a higher speed is selected.

Harddisk LED indicator - LED ON when Onboard PCI IDE

Harddisks activites.

1

5

+

7

10

J4

*

The power LED lights when

the system is powered on

and blinks in SLEEP MODE

(Suspend mode).

J9 System Power ON/OFF Switch (For ATX Power Suppply Connector)

Pressing the button once will switch the system on and enter the

SLEEP MODE(Suspend mode). While in the SLEEP MODE, a

keystrobe or mouse movement (mouse driver exists) will instantly

"wake up"the system. Pressing the button while the system is on for

more than 4 seconds will turn the system off.

Note : The button should be a momentary switch that is normally on.

1.GND

2.+12V

3.RPM's Sonsor

J4 The Power Supply (+12V) of the CPU Cooling/Power supply /Chassis FAN:

1

3

J5

J6

2-6 EP-5ATXA-M

I/O back panel connector:

JP1 Clear CMOS:

1-2 : Normal operation (Default)

2-3 : Clear CMOS Values

This setting allows users to clear current CMOS data and to return

to the initial data by setting the jumper to 2-3 when the system is

off. This jumper should be brought back to pin 1-2 to restore the

normal operation. Here, we strongly recommend you pull out the

power cable for safety and for avoiding damaging befor clearing

CMOS data.

3

1

5

1.VCC

2.NC

3.IRRX

4.GND

5.IRT

1

J3 IrDA/ASK IR CONNECTOR:

JP13 Keyboard Power ON function:

1-2 : Enabled

(For the details, please refer to Chapter 3-1: Keyboard

Power On Function.)

2-3 : Disabled (Default)

3

1

PS/2 Mouse

PS/2 KB

USB1

USB2

LPT1

COM1 COM2

Game Port

Line-Out Line-In Mic

Hardware Design 2-7

2-3

Real Time Clock Battery Replacement

The battery can be replaced by a Sanyo / Panasonic CR2032, or

other equivalent coin lithium battery. Please follow the steps below to

replace the battery.

+

1.Remove

2.Insert

1

2

3

4

1

2

3

+

2-4 System Memory Configuration

The EP-5ATXA-M supports different types of settings for the system memory.

There is not jumper for SDRAM hardware setting is for memory configuration. The

following figures show all possible memory combinations.

2-8 EP-5ATXA-M

DIMM (M1) DIMM2 (M2) DIMM3(M3) SIMM1, SIMM2 TOTAL Memery

(BANK 0) (BANK 1) (BANK 2) (BANK2) MAX. = 256MB

SDRAM SDRAM SDRAM

8MB, 16MB 8MB, 16MB 8MB, 16MB

Empty =

32MB 32MB 32MB

SDRAM SDRAM EDO/FP DRAM

8MB, 16MB 8MB, 16MB 4MB, 8MB

Empty =

32MB 32MB 16MB, 64MB

SDRAM EDO/FD DRAM

8MB, 16MB 4MB, 8MB

Empty Empty =

32MB 16MB, 64MB

SDRAM EDO/FD DRAM

8MB, 16Mb 4MB, 8MB

Empty Empty =

32MB 16MB, 64MB

SDRAM SDRAM

8MB, 16MB 8MB., 16MB

Empty Empty =

32MB 32MB

SDRAM SDRAM

[ 64MB, 128MB] [64MB, 128MB] Empty Empty =

NOTE : 1. DIMM3(Bank2) & SIMM1/SIMM2(Bank2) are shared. This means that if

you use SIMM1 & 2 you can not use DIMM3(M3).

2.DIMM module specification is 3.3V / unbuffered.

BANK 0

BANK 2 5V FP / EDO DRAM

3.3V Synchronous DRAM

or 3.3V FP/EDO DRAM

3.3V Synchronous DRAM

or 3.3V FP/EDO DRAM

Memory Configuration Table

SIMM1

SIMM2

DIMM2

DIMM1

>

BANK 1

x 1

x 2

DIMM3

BANK 2

>

3.3V Synchronous DRAM

or 3.3V FP/EDO DRAM

x 1 x 2

x 1 x 1

Hardware Design 2-9

DIMM Module Installation

Figure 2-2 displays the notch marks and what they should look like on your

DIMM memory module.

DIMMs have 168-pins and two notches that will match with the onboard

DIMM socket. DIMM modules are installed by placing the chip firmly into

the socket at a 90 degree angle and pressing straight down (figure 2-3) until

it fits tightly into the DIMM socket (figure 2-4).

CENTER KEY ZONE

(3.3 V DRAM)

LEFT KEY ZONE

(UNBUFFERED)

Figure 2-2

Figure 2-3

DIMM Module clip before installation

Figure 2-4

DIMM Module clip after installation

To remove the DIMM module simply press down both of the white clips on

either side and the module will be released from the socket.

2-10 EP-5ATXA-M

* EP-5ATXA-M Supports and extends many memory configurations on its 2 SIMM

and 2 DIMM sites. The memory size of any configuration can be combined

flexibly. BIOS will detect your memory configurations and sizes automaticallly.

* The 70ns Fast Page Mode or 60ns EDO is necessary.

* "BANK" = 64Bit = SIMM1, SIMM2 = DIMM1 = DIMM2

2-5 Cache Memory Configuration

The second level (L2) cache is installed in the mainboard to increase the system

performance. The EP-5ATXA-M supports 512KB piplined burst synchronous

SRAM.

64K*64

U17

U16

DATA SRAM

TAG

SRAM

When you have a DIMM module to plug into a 168-pin dual readout connnector,

you must make sure that the DIMM module is 3.3V/Unbuffered to supports Intel

Pentium Processor System.

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Hardware Design 2-11

2-6 Integrated PCI Bridge

The EP-5ATXA-M utilizes Intel 430TX PCIset chipset to support Intel Pentium

Processor PCI/ISA system. The Intel 82430TX PCIset chipset consists of one

82439TX system controller (MTXC) and one 82371AB PCI ISA/IDE Accelerator

(PIIX4) bridge chip. It provides an interface which translates CPU cycle into PCI bus

cycle and PCI burst read/write capability. In addition, it provides a high performance

PCI arbiter and supports four PCI Masters, Rotating Priority Mechanism, and Hidden

Arbitration Scheme Minimizes Arbitration Overhead. The 82371AB(PIIX4) supports

PCI Specification Revision 2.1 Compliant and contains a Universal Serial Bus

interface with both host and hub control functions. EP-5ATXA-M reserves a USB

connector to provide two USB ports for serial transfer at 12 or 1.5 Mbit/sec. This

supports legacy keyboard and mouse software with USB-Base Keyboard and mouse.

There are four interrupts in each PCI slot : INTA#, INTB#, INTC#, and INTD#, since

the EP-5ATXA-M adapts the PCI auto-configuration with the system BIOS Setup

utility. When the system is turned on after adding a PCI add-in card, the BIOS

automatically configure interrupts, DMA channels, I/O space, and other paramaters.

You do not have to configure jumpers or worry about potential resource conflicts.

Because PCI cards use the same interrupt resource as ISA cards, you must specify

the interrupts used by ISA add-in cards in the BIOS Setup utility.

If a "Legacy card" (such as plug paddle card and cable for the ISA slot.) is plugged

in the system, modification in the ROM SETUP UTILITY becomes necessary. First,

enter PCI CONFIGURATION SETUP utility from ROM SETUP UTILITY main menu

to set the "PCI IDE IRQ MAP TO : ISA".

Second, you must enter CHIPSET FEATURES SETUP UTILITY from ROM SETUP

UTILITY main menu and set the " Onboard Primary PCI IDE: Disabled and Onboard

Secondary PCI IDE: Disable." When you plug the PCI/ISA IDE card into the system,

You should Disable Onboard Primary and Secondary PCI IDE from CHIPSET

FEATURES SETUP UTILITY too.

When no paddle card and cable are used, you can set the system interrupt request

(IRQ) on the "Legacy card" (refer to user's manual of the card) to a proper system

IRQ level (In general, card's Primary is assigned to INTA and Secondary is assigned

to INTB). If the card is plugged into slot 1(marked PCI#1), you cannot use the

second slot (marked PCI#2) because the Secondary INT signal takes INTB from the

slot (refer to Page 3-12 for circuit diagram). The user then enters PCI CONFIGURA-

TION SETUP utility from ROM SETUP UTILITY main menu and sets the " PCI IDE

IRQ MAP TO : PCI-Slot 1" (It depends on the slot # where the Legacy card is

plugged).

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Introduction 3-1

Chapter 3

ATX Form-Factor

Overview

Floppy / IDE

connectors close

to peripheral

bays

3

1

/2"

Bay

Figure 3-1: Summary of ATX chassis features

Expandable I/

O

Single chassis fan

for system

ATX

Power

Sup-

ply

Full length

slots

CPU located near

Power Supply

Easy to access

SIMM memory

5

1

/4"

Bay

The EP-5ATXA-M is base on ATX form-factor with a board size 8.2" x 12" (208mm x

305mm). The ATX from-factor is essentially an enlarged baby-AT basedboard rotated

90 degrees within an ATX chassis and uses ATX power supply. The changes make

pentium processor able to locate away from the expansion slots and all onboard I/Os

able to hold full length add-on cards. The improved features of an ATX form-factor

from a baby-AT or LPX form-factor are shown as follows (see Figure 3-1).

1

2

3

4

5

Enhance the ease-of-use for the system

Supports full length cards for ISA and PCI slots

Install the SIMM/DIMM Memory easily

Install a CPU into the socket easily

Greate air-flow in the chassis with ATX power Supply

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