Asus MEZ-VM User manual

R
MEZ-VM
Socket 370 AGP Motherboard
USER’S MANUAL

2ASUS MEZ-VM User’s Manual
USER'S NOTICE
Product Name: ASUS MEZ-VM
Manual Revision: 1.01 E324
Release Date: January 1999
No part of this manual, including the products and software described in it, may be repro-
duced, transmitted, transcribed, stored in a retrieval system, or translated into any language in
any form or by any means, except documentation kept by the purchaser for backup purposes,
without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”).
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
WARRANTIES OR CONDITIONS OF MERCHANTABILITYOR FITNESS FORAPAR-
TICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS,
EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDEN-
TAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF
PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSI-
NESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY
OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL
OR PRODUCT.
Product warranty or service will not be extended if: (1) the product is repaired, modified or
altered, unless such repair, modification of alteration is authorized in writing byASUS; or (2)
the serial number of the product is defaced or missing.
Products and corporate names appearing in this manual may or may not be registered trade-
marks or copyrights of their respective companies, and are used only for identification or
explanation and to the owners’ benefit, without intent to infringe.
• Intel, LANDesk, and Pentium are registered trademarks of Intel Corporation.
• IBM and OS/2 are registered trademarks of International Business Machines.
• Symbios is a registered trademark of Symbios Logic Corporation.
• Windows and MS-DOS are registered trademarks of Microsoft Corporation.
• XGstudio and Soft Synthesizer is a trademark of the Yamaha Corporation.
• Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated.
The product name and revision number are both printed on the product itself. Manual revi-
sions are released for each product design represented by the digit before and after the period
of the manual revision number. Manual updates are represented by the third digit in the manual
revision number.
For previous or updated manuals, BIOS, drivers, or product release information, contactASUS
at http://www.asus.com.tw or through any of the means indicated on the following page.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUALARE FUR-
NISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT
ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COM-
MITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR
ANYERRORS OR INACCURACIESTHATMAYAPPEARINTHISMANUAL,INCLUD-
ING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Copyright © 1998 ASUSTeK COMPUTER INC. All Rights Reserved.

ASUS MEZ-VM User’s Manual 3
ASUS CONTACT INFORMATION
ASUSTeK COMPUTER INC. (Asia-Pacific)
Marketing
Address: 150 Li-Te Road, Peitou, Taipei, Taiwan 112
Telephone: [phone]
Fax: [phone]
Email: [email protected]
Technical Support
Tel (English): [phone] ext. 706
Tel (Chinese): [phone] ext. 701
Fax: [phone]
Email: [email protected]
Newsgroup: news2.asus.com.tw
WWW: www.asus.com.tw
FTP: ftp.asus.com.tw/pub/ASUS
ASUS COMPUTER INTERNATIONAL (America)
Marketing
Address: 6737 Mowry Avenue, Mowry Business Center, Building 2
Newark, CA 94560, USA
Fax: [phone]
Email: [email protected]
Technical Support
Fax: [phone]
BBS: [phone]
Email: [email protected]
WWW: www.asus.com
FTP: ftp.asus.com.tw/pub/ASUS
ASUS COMPUTER GmbH (Europe)
Marketing
Address: Harkort Str. 25, 40880 Ratingen, BRD, Germany
Telephone: [phone]
Fax: [phone]
Email: [email protected]
Technical Support
Hotline: [phone]
BBS: 49-2102-448690
Email: [email protected]
WWW: www.asuscom.de
FTP: ftp.asuscom.de/pub/ASUSCOM

4ASUS MEZ-VM User’s Manual
CONTENTS
I. INTRODUCTION.............................................................................. 7
How this manual is organized............................................................. 7
Item Checklist ..................................................................................... 7
II. FEATURES ....................................................................................... 8
The ASUS MEZ-VM Motherboard .................................................... 8
Introduction to ASUS Smart Series Motherboards ................. 9
Parts of the ASUS MEZ-VM Motherboard ...................................... 11
III. HARDWARE SETUP.................................................................... 12
ASUS MEZ-VM Motherboard Layout............................................. 12
Hardware Setup Steps ....................................................................... 14
1. Jumpers ......................................................................................... 15
2. System Memory (DIMM) ............................................................. 17
SPD Support .......................................................................... 17
DIMM Memory Installation .................................................. 18
3. Central Processing Unit (CPU).................................................... 19
4. Expansion Cards .......................................................................... 20
Expansion Card Installation Procedure: ................................ 20
Assigning IRQs for Expansion Cards.................................... 20
Assigning DMA Channels for ISA Cards.............................. 21
5. External Connectors..................................................................... 22
Power Connection Procedures .......................................................... 33
Flash Memory Writer Utility ............................................................ 34
IV. BIOS SETUP................................................................................... 34
Main Menu .................................................................................. 34
Managing and Updating Your Motherboard’s BIOS................... 36
6. BIOS Setup .................................................................................. 37
Load Defaults ........................................................................ 38
Standard CMOS Setup ................................................................ 38
Details of Standard CMOS Setup:......................................... 38
BIOS Features Setup ................................................................... 41
Details of BIOS Features Setup............................................. 41
Chipset Features Setup ................................................................ 44
Details of Chipset Features Setup.......................................... 44
Power Management Setup........................................................... 47
Details of Power Management Setup .................................... 47
PNP and PCI Setup ..................................................................... 50
Details of PNP and PCI Setup ............................................... 50
Load BIOS Defaults .................................................................... 52
Load Setup Defaults .................................................................... 52

ASUS MEZ-VM User’s Manual 5
CONTENTS
Supervisor Password and User Password ................................... 53
IDE HDD Auto Detection ........................................................... 54
Save & Exit Setup ....................................................................... 55
Exit Without Saving .................................................................... 55
V. Software Setup................................................................................. 57
VI. Software Reference ........................................................................ 65
Appendix ............................................................................................... 79

6ASUS MEZ-VM User’s Manual
FCC & DOC COMPLIANCE
FederalCommunications Commission Statement
This device complies with FCC Rules Part 15. Operation is subject to the following
two conditions:
• This device may not cause harmful interference, and
• This device must accept any interference received, including interference that
may cause undesired operation.
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 installa-
tion. This equipment generates, uses and can radiate radio frequency energy and, if
not installed and used in accordance with manufacturer’s 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 interfer-
ence by one or more of the following measures:
• Re-orient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment to 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.
WARNING! Be sure that there is sufficient air circulation across the processor’s
heatsink by regularly checking that your CPU fan is working. Without sufficient
circulation, the processor could overheat and damage both the processor and the
motherboard. You may install an auxiliary fan, if necessary.
CanadianDepartment of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions
from digital apparatus set out in the Radio Interference Regulations of the Canadian
Department of Communications.

ASUS MEZ-VM User’s Manual 7
I. INTRODUCTION
I. INTRODUCTION
Sections/Checklist
How this manual is organized
This manual is divided into the following sections:
I. Introduction Manual information and checklist
II. Features Information and specifications concerning this product
III. Hardware Setup Instructions on setting up the motherboard
IV. BIOS Setup Instructions on setting up the BIOS software
V. Software Setup Information on setting up the included support software
VI. Software Reference Reference material for the included support software
Item Checklist
Check that your package is complete. If you discover damaged or missing items,
please contact your retailer.
(1) ASUS Motherboard
(1) IDE ribbon cable for master and slave drives
(1) Floppy ribbon cable for (1) 5.25” floppy and (2) 3.5” floppies
(1) COM2 connector with bracket
(1) Bag of spare jumper caps
(1) Support CD with drivers and utilities
(1) This Motherboard User’s Manual
IrDA-compliant infrared module (optional)
ASUS PCI-L101 Wake-On-LAN 10/100 Fast Ethernet Card (optional)

8ASUS MEZ-VM User’s Manual
II. FEATURES
Features
II. FEATURES
The ASUS MEZ-VM Motherboard
TheASUS MEZ-VM motherboard is carefully designed for the demanding PC user
who wants many intelligent features in a small package.
•Intel Processor Support: Supports Intel’s Celeron processor designed for the
Socket 370 and packaged in a Plastic Pin Grid Array (PPGA).
•IntelAGPset: Features Intel’s 440ZXAGPset with I/O subsystems and front side
bus (FSB) platform, which boosts the traditional 66MHz internal bus to 100MHz.
•AGP 3D AGP VGA: Features onboard ATI 3D Rage Pro AGP 2X (8MB
SDRAM) or Rage IIC AGP (4MB SDRAM) for 3D hardware acceleration.
•Onboard Audio (optional): Provides Creative Labs ES1373 PCI audio chipset
with 3D surround and positioning capability. Includes complete online help to
guide you through the audio software.
• Audio Codec (optional): Features an 18-bit stereo, full duplex, audio codec
that conforms to AC’97 analog component specfications.
•Enhanced ACPI & Anti-Boot Virus BIOS: Programmable BIOS (Flash
EEPROM),offering enhancedACPI forWindows 98 compatibility, built-in hard-
ware-based virus protection, and autodetection of most devices for virtually au-
tomatic setup.
•Versatile Memory: Equipped with two DIMM sockets to support Intel PC100-
compliant SDRAMs (8, 16, 32, 64, 128, or 256MB) up to 512MB.
•AGP Slot: Supports an Accelerated Graphics Port card for high performance,
component level interconnect targeted at 3D graphical display applications us-
ing a 66MHz bus.
•PCI & ISA Expansion: Provides two 32-bit PCI expansion slots and one 16-bit
ISA expansion slot .
•Wake-On-LAN Header: Supports Wake-On-LAN activity through an optional
ASUS PCI-L101 Fast Ethernet card or a similar ethernet card.
•SB-Link™: Features Creative’s SB-Link™, allowing SB16 compatibility us-
ing Intel’s PC-PCI and serialized IRQ protocols toAWE64D or compatible PCI
audio cards.
• Super Multi-I/O: Provides two high-speed UART compatible serial ports and
one parallel port with EPP and ECP capabilities.
• Desktop ManagementInterface (DMI): Supports DMI through BIOS, which
allows hardware to communicate within a standard protocol creating a higher
level of compatibility. (Requires DMI-enabled components.)
•UltraDMA/33BM IDE:Comes with an onboard PCI Bus Master IDE controller
with two connectors that support four IDE devices in two channels, supports Ultra
DMA/33, PIO Modes 3 and 4 and Bus Master IDE DMA Mode 2, and supports
Enhanced IDE devices, such as Tape Backup, CD-ROM, and LS-120 drives.
•Easy Installation: Equipped with BIOS that supports autodetection of hard
drives, PS/2 mouse, and Plug and Play devices to make setup of hard drives,
expansion cards, and other devices virtually automatic.
•IrDA: Supports an optional infrared port module for wireless interface.

ASUS MEZ-VM User’s Manual 9
II. FEATURES
II. FEATURES
Smart Series
Introduction to ASUS Smart Series Motherboards
Performance
• ACPIReady:ACPI(Advanced Configuration and Power Interface) isalsoimple-
mented on all ASUS smart series motherboards. ACPI provides more Energy
Saving Features for future operating systems (OS) supporting OS Direct Power
Management (OSPM) functionality. With these features implemented in the OS,
PCs can be ready around the clock, yet satisfy all the energy saving standards.
To fully utilize the benefits ofACPI, anACPI-supported OS such as the succes-
sor of Windows 95 must be used.
• Double the IDE Transfer Speed: IDE transfers using UltraDMA/33 Bus Mas-
ter IDE can handle rates up to 33MB/sec. The best of all is that this new technol-
ogy is compatible with existingATA-2 IDE specifications so there is no need to
upgrade current hard drives or cables.
•Concurrent PCI: Concurrent PCI allows multiple PCI transfers from PCI mas-
ter buses to memory to CPU.
• PC’98 Compliant: Both the BIOS and hardware levels of the motherboard meet
PC’98 compliancy. The new PC’98 requirements for systems and components are
based on the following high-level goals: Support for Plug and Play compatibility
and power management for configuring and managing all system components,
and 32-bit device drivers and setup procedures for Windows 95/98/NT.
• SDRAM Optimized Performance: ASUS smart series motherboards support
the new generation memory, Synchronous Dynamic Random Access Memory
(SDRAM), which increases the data transfer rate from 264MB/s max using EDO
memory to 528MB/s max using SDRAM.

10 ASUS MEZ-VM User’s Manual
II. FEATURES
Smart Series
II. FEATURES
Power Management
• SystemResourcesAlert:Today’s operating systems such as Windows 95, Win-
dows NT, and OS/2, require much more memory and hard drive space to present
enormous user interfaces and run large applications. The system resource moni-
tor will warn the user before the system resources are used up to prevent pos-
sible application crashes. Suggestions will give the user information on manag-
ing their limited resources more efficiently.
• Auto Fan Off: The system fans will power off automatically even in sleep
mode. This function reduces both energy consumption and system noise, and
is a important feature to implement silent PC systems.
• Dual Function Power Button: The system can be in one of two states, one is
Sleep mode and the other is the Soft-Off mode. Pushing the power button for
less than 4 seconds places the system into Sleep mode. When the power button
is pressed for more than 4 seconds, it enters the Soft-Off mode.
• Remote Ring On (requires modem): This allows a computer to be turned on
remotely through an internal or external modem. With this benefit on-hand, any
usercanaccessvitalinformationfromtheircomputerfrom anywhere in the world!
• Message LED (requires ACPI OS support): Chassis LEDs now act as infor-
mation providers. Through the way a particular LED illuminates, the user can
determine the stage the computer is in.A simple glimpse provides useful infor-
mation to the user.

ASUS MEZ-VM User’s Manual 11
Parts of the ASUS MEZ-VM Motherboard
II. FEATURES
II. FEATURES
Motherboard Parts
Socket 370
T: PS/2 Mouse
B: PS/2 Keyboard
ATX Power
Connector
Serial COM 1
T: USB 1
B: USB 2
Parallel Port
VGAConnector
2 DIMM
Sockets
2 PCI Slots
Wake-On-LAN
Header
T: Joystick/Midi
B: Out/In/Mic
(optional)
Intel PIIX4E
PCIset SB-Link
TM
Header
Programmable
Flash EEPROM
1ISASlot
AGP Port
Multi-I/O Chip
Serial COM2
Header
Audio Codec
(optional)
Intel 440ZX
AGPset ATI 3D Rage Pro AGP2X/
Rage IICAGP VGAChipset
4MBVGAMemory
(Rage IIC)
8MBVGAMemory
(Rage Pro)
Creative Labs
PCIAudio
(optional)

12 ASUS MEZ-VM User’s Manual
III. HARDWARE SETUP
ASUS MEZ-VM Motherboard Layout
Motherboard Layout
III. H/W SETUP
ISA Slot 1 (ISA1)
PCI Slot 2 (PCI2)
PCI Slot 1 (PCI1)
COM1
PARALLEL PORT
VGA
USB
T: Port 1
B:Port 2
PS/2
T:Mouse
B:Keyboard
ATXPWR
2Mbit Flash EEPROM
(Programmable BIOS)
PRIMARY
SECONDARY
FLOPPY
ATI Multimedia Connector (AMC)
2 MB
SDRAM
2 MB
SDRAM
CR2032 3V
Lithium Cell
CMOS Power
Row
01
DIMM Socket 2 (64/72-bit, 168-pin module)
DIMM Socket 1 (64/72-bit, 168-pin module)
2
3
0
1
CPU_FAN
FREQ MULT
BF0 BF2 BF1 BF3
INT_EN
Multi-I/O &
Keyboard
Controller
COM2
Socket 370
Intel
440ZX
AGPset
ATI 3D Rage
Pro AGP 2X/
Rage IIC
VGA
Chipset
Intel
PIIX4E
Chipset
Buzzer
8MB available
on Rage Pro only
ASUS
ASIC
RTCCLR
PANEL
PRINTER
2 MB
SDRAM
2 MB
SDRAM
GAME_AUDIO
Mic
In
Line
Out
Line
In
MODEM
SBLINK
WOL_CON
CD_IN
Accelerated Graphics Port (AGP)
AUDIOEN
BUS FREQ
FS4
FS3
FS2
FS1
FS0
32-bit
PCI
Audio
IR
Audio
Codec
VGAEN
(Grayed items are optional at the time of purchase.)

13ASUS MEZ-VM User’s Manual
III. HARDWARE SETUP
Layout Contents
III. H/W SETUP
Jumpers
1) INT_EN p. 15 VGA Interrupt Setting (Enable/Disable)
2) VGAEN p. 15 VGA Setting (Enable/Disable)
3) AUDIOEN p. 15 Audio Setting (Enable/Disable)
4) FS0, FS1, FS2, FS3, FS4 p. 16 CPU External Clock (BUS) Frequency Selection
5) BF0, BF1, BF2, BF3 p. 16 CPU:BUS Frequency Multiple
Expansion Slots
1) DIMM1, DIMM2 p.17 168-Pin DIMM Memory Support
2) Socket 370 p. 19 Central Processing Unit (CPU) Support
3) PCI1, PCI2 p. 20 32-bit PCI Bus Expansion Slots
4) ISA1 p. 20 16-bit ISA Bus Expansion Slot
Connectors
1) PS2KBMS P. 22 PS/2 Mouse Connector (6-pin female)
2) PS2KBMS p. 22 PS/2 Keyboard Connector (6-pin female)
3) USB p. 23 Universal Serial BUS Ports 1 & 2 (Two 4-pin female)
4) PRINTER p. 23 Parallel Port Connector (25-pin female)
5) COM1 p. 23 Serial Port COM1 Connector (9-pin male)
6) VGA p. 24 Monitor (VGA) Output Connector (15-pin female)
7) GAME_AUDIO p. 24 Joystick/Midi Connector (15-pin female) (optional)
8) GAME_AUDIO p. 24 Audio Port Connectors(Three 1/8”female) (optional)
9) PRIMARY/SECONDARYIDE p. 25 Primary/Secondary IDE Connectors (Two 40-1pins)
10) FLOPPY p. 25 Floppy Disk Drive Connector (34-1pins)
11) IR p. 26 IrDA-Compliant Infrared Module Connector (5 pins)
12) WOL_CON p. 26 Wake-On-LAN Connector (3 pins)
13) SBLINK p. 27 SB-Link
TM
Connector (6-1 pins)
14) CD_IN p. 27 Stereo Audio In Connector (4 pins)
15) MODEM p. 28 Modem In Audio Connector (4 pins)
16) COM2 p. 28 Serial Port COM2 Header (10-1 pins)
17) AMC p. 29 ATI Multimedia Channel (40-3 pins)
18) CPU_FAN p. 29 CPU Fan Connector (3 pins)
19) MLED (PANEL) p. 30 System Message LED (2 pins)
20) KEYLOCK ( PANEL ) p. 30 Keyboard Lock Switch Lead (2 pins)
21) SMI (PANEL) p. 30 SMI Switch Lead (2 pins)
22) SPEAKER (PANEL) p. 30 System Warning Speaker Connector (4 pins)
23) PWR (PANEL) p. 30 ATX Power & Soft-Off Switch Lead (2 pins)
24) IDELED (PANEL) p. 30 IDE Activity LED (2 pins)
25) PLED ( PANEL ) p. 31 System Power LED Lead (3-1 pins)
26) RESET (PANEL) p. 31 Reset Switch Lead (2 pins)
27) ATXPWR p. 32 ATX Power Supply Connector (20 pins)

14 ASUS MEZ-VM User’s Manual
III. HARDWARE SETUP
Jumpers
III. H/W SETUP
WARNING!Computer motherboards, baseboardsandcomponents, such as SCSI
cards, contain very delicate Integrated Circuit (IC) chips. To protect them against
damage from static electricity, you should follow some precautions whenever you
work on your computer.
1. Unplug your computer when working on the inside.
2. Use a grounded wrist strap before handling computer components. If you do
not have one, touch both of your hands to a safely grounded object or to a
metal object, such as the power supply case.
3. Hold components by the edges and try not to touch the IC chips, leads or
connectors, or other components.
4. Place components on a grounded antistatic pad or on the bag that came with
the component whenever the components are separated from the system.
Hardware Setup Steps
Before using your computer, you must complete the following steps:
1. Set Jumpers on the Motherboard
2. Install System Memory Modules
3. Install the Central Processing Unit (CPU)
4. Install Expansion Cards
5. Connect Ribbon Cables, Cabinet Wires, and Power Supply
6. Setup the BIOS Software

15ASUS MEZ-VM User’s Manual
III. HARDWARE SETUP
Jumpers
III. H/W SETUP
1. Jumpers
1. VGAInterrupt Selection (INT_EN) / 2. VGASetting (VGAEN)
INT_EN allows you to set the VGA interrupt method. The default disables the
chipset’s internal interrupt routing. Some TVtuners or MPEG cards may require
the interrupt be assigned by the onboard chipset, in which case INT_EN must be
enabled.VGAEN allows you to enable or disable the onboardVGA. Disable the
onboard VGA if you are using a VGA card on the expansion slot.
3. Audio Setting (AUDIOEN)
The onboard 32-bit PCI audio may be enabled or disabled using this jumper.
Setting AUDIOEN
Enable [1-2] (default)
Disable [2-3]

16 ASUS MEZ-VM User’s Manual
Jumpers
III. H/W SETUP
III. HARDWARE SETUP
4. CPU Bus Frequency Selector (FS0, FS1, FS2, FS3, FS4)
This option tells the clock generator what frequency to send to the CPU, DRAM, and
440ZX AGPset. This allows the selection of the CPU’s External frequency (or BUS
Clock). The BUS Clock multiplied by the BUS Ratio equals the CPU’s Internal fre-
quency (the advertised CPU speed).
5. CPU Core:BUS Frequency Multiple (BF0, BF1, BF2, BF3)
This option sets the frequency multiple between the Internal frequency of the
CPU and the CPU’s External frequency. These must be set in conjunction with the
CPU Bus Frequency.
NOTES: Overclocking your processor is not recommended. It may result in a slower
speed.VoltageRegulatorOutputSelection(VID)isnotneededforthePentiumII/Celeron
processor because it sends a VID signal directly to the onboard power controller.
Set the jumpers by the Internal speed of your processor asfollows:
(CPU BUS Freq.) (Freq. Multiple)
Intel CPU Model Freq. Ratio BUS F. FS0 FS1 FS2 FS3 FS4 BF3 BF2 BF1 BF0
Celeron (PPGA) 366MHz 5.5x 66MHz [1-2] [1-2] [2-3] [2-3] [2-3] [2-3] [1-2] [1-2] [1-2]
Celeron (PPGA) 333MHz 5.0x 66MHz [1-2] [1-2] [2-3] [2-3] [2-3] [2-3] [1-2] [1-2] [2-3]
Celeron (PPGA) 300MHz 4.5x 66MHz [1-2] [1-2] [2-3] [2-3] [2-3] [2-3] [1-2] [2-3] [1-2]
MEZ-VM CPU Settings
0 1
CPU Core:Bus Frequency Multiple
5.5x(11/2)
1
2
3
BF3 BF2 BF1 BF0
5.0x(5/1)
1
2
3
BF3 BF2 BF1 BF0
6.0x(6/1)
1
2
3
BF3 BF2 BF1 BF0
4.5x(9/2)
1
2
3
BF3 BF2 BF1 BF0
4.0x(4/1)
1
2
3
BF3 BF2 BF1 BF0
3.5x(7/2)
1
2
3
BF3 BF2 BF1 BF0
3.0x(3/1)
1
2
3
BF3 BF2 BF1 BF0
CPU Bus Frequency
112.0MHz
37.3MHz 115.0MHz 38.3MHz 120.0MHz 40.0MHz 124.0MHz 31.0MHz 133.0MHz 44.3MHz
124.0MHz
41.3MHz 133.0MHz 33.3MHz
CPU
PCI
FS0
FS1
FS2
FS3
FS4
123123123123123123123
110.0MHz
36.7MHz
105.0MHz
35.0MHz
75.0MHz
37.5MHz 83.0MHz 41.6MHz 100.3MHz 33.4MHz 103.0MHz 34.3MHz
66.8MHz
33.4MHz
CPU
PCI
FS0
FS1
FS2
FS3
FS4
123123123123123123123
WARNING! Frequencies above 100MHz exceed the specifications for the on-
board Intel Chipset and are not guaranteed to be stable. PCI frequencies above
33MHzexceed the specifications forPCI cards and are notguaranteed to be stable.

17ASUS MEZ-VM User’s Manual
III. HARDWARE SETUP
System Memory
III. H/W SETUP
SPD Support
This motherboard supports SPD DIMMs. If non-SPD DIMMs are used, you will be
warned during boot-up to set the timings manually.
General DIMM Notes
•Forthe systemCPU busto operateabove 100MHz, use only PC100-compli-
ant DIMMs.When this motherboard operates at 100MHz, most system will not
even boot if non-compliant modules are used because of the strict timing issues
involved under this speed. If your DIMMs are not PC100-compliant, set the
CPU bus frequency to 66MHz for system stability.
• Two possible memory chips are supported: SDRAM with and without ECC.
• SDRAM chips are generally thinner with higher pin density than EDO (Ex-
tended Data Output) chips.
• BIOS shows SDRAM memory on bootup screen.
• 8chips/sidemodulesdonot support ECC, only 9 chips/sidemodulessupportECC.
• Single-sided DIMMs come in 16, 32, 64,128MB; double-sided come in 32, 64,
128, 256MB.
Install memory in any combination as follows:
DIMM Location 168-pin DIMM Memory Modules Total Memory
Socket 1 (Rows 0&1) SDRAM 8, 16, 32, 64, 128, 256MB x1
Socket 2 (Rows 2&3) SDRAM 8, 16, 32, 64, 128, 256MB x1
Total System Memory (Max 512MB) =
2. System Memory (DIMM)
NOTE: No hardware or BIOS setup is required after adding or removing memory.
This motherboard uses only Dual Inline Memory Modules (DIMMs). Sockets are
available for 3.3Volt (power level) unbuffered Synchronous Dynamic Random Ac-
cess Memory (SDRAM) of either 8, 16, 32, 64, 128MB, or 256MB. One side (with
memory chips) of the DIMM takes up one row on the motherboard.
The Intel 440ZX AGPset does not support ECC function. ECC memory modules
may be used but the ECC function will not be available.
Memoryspeedsetup is recommended through SDRAM Configuration under “Chipset
Features Setup” in BIOS SETUP.

18 ASUS MEZ-VM User’s Manual
III. HARDWARE SETUP
System Memory
III. H/W SETUP
DIMM Memory Installation
Insert the module(s) as shown. Because the number of pins are different on either
side of the breaks, the module will only fit in the orientation as shown. DIMM
modules are longer and have different pin contact on each side and therefore have a
higher pin density. SIMM modules have the same pin contact on both sides.
MEZ-VM 168-Pin DIMM Sockets
0 1
Lock Lock
88
pins 60
pins 20
pins
TheDIMMsmustbe3.3VUnbufferedfor this motherboard.To determine the DIMM
type, check the notches on the DIMMs (see figure below).
168-Pin DIMM Notch Key Definitions (3.3V)
DRAM Key Position Voltage Key Position
Unbuffered
RFU
Buffered Reserved
3.3V
5.0V
The notches on the DIMM module will shift between left, center, or right to identify
the typeand alsoto prevent the wrongtype from being inserted intothe DIMM slot on
the motherboard.You must tell your retailer the correct DIMM type before purchas-
ing. This motherboard supports four clock signals.

19ASUS MEZ-VM User’s Manual
III. HARDWARE SETUP
3. Central Processing Unit (CPU)
The motherboard provides a ZIF Socket 370. The CPU that came with the mother-
board should have a fan attached to it to prevent overheating. If this is not the case
then purchase a fan before you turn on your system.
WARNING! Without a fan circulating air on the CPU, the CPU can overheat
and cause damage to both the CPU and the motherboard.
To install a CPU, first turn off your system and remove its cover. Locate the ZIF
socket and open it by first pulling the lever sideways away from the socket then
upwards to a 90-degree right angle. Insert the CPU with the correct orientation as
shown. The notched corner should point towards the end the of the lever. Because
the CPU has a corner pin for two of the four corners, the CPU will only fit in the one
orientation as shown. The picture is for reference only; you should have a CPU fan
that will cover the face of the CPU. With the added weight of the CPU fan, no force
is required to insert the CPU. Once completely inserted, close the socket’s lever
while holding down the CPU.
NOTE: Set the bus frequency and multiple for your Socket 370 processor.
MEZ-VM Socket 370
Socket 370 CPU (Top) Socket 370 CPU (Bottom)
Notch
0 1
CPU
III. H/W SETUP

20 ASUS MEZ-VM User’s Manual
III. HARDWARE SETUP
Expansion Cards
III. H/W SETUP
4. Expansion Cards
WARNING! Make sure that you unplug your power supply when adding or
removing expansion cards or other system components. Failure to do so may
cause severe damage to both your motherboard and expansion cards.
Expansion Card Installation Procedure:
1. Read your expansion card documentation on any hardware and software set-
tings that may be required to setup your specific card.
2. Set any necessary jumpers on your expansion card.
3. Remove your computer system’s cover.
4. Remove the bracket on the slot you intend to use.
Keep the bracket for possible future use.
5. Carefully align the card’s connectors and press firmly.
6. Secure the card on the slot with the screw you removed in step 4.
7. Replace the computer system’s cover.
8. Setup the BIOS if necessary
9. Install the necessary software drivers for your expansion card.
Assigning IRQs for Expansion Cards
Some expansion cards need to use an IRQ (Interrupt Request) to operate. Generally
an IRQ must be exclusively assigned to one use. In a standard design there are 16
IRQs available but most of them are already in use by parts of the system which
leaves 6 free for expansion cards. If your motherboard has PCI audio onboard, an
extra IRQ will be used, leaving 5 IRQs free. If your motherboard has ISA audio
onboard, an extra 3 IRQs will be used, leaving 3 IRQs free.
Both ISA and PCI expansion cards may need to use IRQs. System IRQs are avail-
able to cards installed in the ISA expansion bus first, and any remaining IRQs are
then used by PCI cards. Currently, there are two types of ISA cards.
The original ISA expansion card design, now referred to as “Legacy” ISA cards,
requires that you configure the card’s jumpers manually and then install it in any
available slot on the ISA bus. You may use Microsoft’s Diagnostic (MSD.EXE)
utility included in the Windows directory to see a map of your used and free IRQs.
For Windows 95/98 users, the “Control Panel” icon in “My Computer,” contains a
“System” icon, which gives you a “Device Manager” tab. Double-clicking on a
specific device give you “Resources” tab which shows the Interrupt number and
address. Make sure that no two devices use the same IRQs or your computer will
experience problems when those two devices are in use at the same time.