Asus MES-N User manual

®
MES-N
Socket 370 NLX Motherboard
USER’S MANUAL

2 ASUS MES-N User’s Manual
USER'S NOTICE
Product Name: ASUS MES-N
Manual Revision: 1.01 E392
Release Date: July 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.
• SiS is a trademark of Silicon Integrated Corporation.
• Intel, Celeron, LANDesk, and Pentium are 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.
• Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated.
• YAMAHA, DS-XG, XGstudio, Ystation32 are trademarks of Yamaha Corporation.
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 MANUAL ARE 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
ANYERRORSORINACCURACIESTHATMAYAPPEARINTHISMANUAL,INCLUD-
ING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Copyright © 1999 ASUSTeK COMPUTER INC. All Rights Reserved.

ASUS MES-N 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. 111
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

4 ASUS MES-N User’s Manual
CONTENTS
1. INTRODUCTION ............................................................................. 7
1.1 How This Manual Is Organized .................................................. 7
1.2 Item Checklist ............................................................................. 7
2. FEATURES ........................................................................................ 8
2.1 The ASUS MES-N Motherboard ................................................ 8
2.1.1 Specifications..................................................................... 8
2.1.2 Performance ....................................................................... 9
2.1.3 Intelligence....................................................................... 10
2.2 Motherboard Parts..................................................................... 11
3. HARDWARE SETUP ..................................................................... 12
3.1 Motherboard Layout ................................................................. 12
3.2 Riser Card Parts & Layout ........................................................ 14
3.3 Hardware Setup Procedure ....................................................... 17
3.4 Motherboard Settings................................................................ 17
3.5 System Memory (DIMM) ......................................................... 24
3.5.1 General DIMM Notes ...................................................... 24
3.5.2 DIMM Memory Installation ............................................ 25
3.6 Central Processing Unit (CPU) ................................................. 26
3.7 Expansion Cards ....................................................................... 27
3.7.1 Expansion Card Installation Procedure............................ 27
3.7.2 Assigning IRQs for Expansion Cards .............................. 27
3.7.3 Assigning DMA Channels for ISA Cards ........................ 28
3.8 External Connectors.................................................................. 29
3.8.1 Back Panel Connectors .................................................... 29
3.8.2 Midboard Connectors ...................................................... 32
3.8.3 Riser Card Connectors ..................................................... 35
3.9 Power Connection Procedures .................................................. 41
4. BIOS SETUP.................................................................................... 42
4.1 Flash Memory Writer Utility .................................................... 42
4.1.1 Main Menu....................................................................... 42
4.1.2 Managing and Updating Your BIOS................................ 44
4.2 BIOS Setup Program ................................................................ 45
4.2.1 BIOS Menu Bar ............................................................... 46
4.2.2 Legend Bar....................................................................... 46
4.3 Main Menu................................................................................ 48

ASUS MES-N User’s Manual 5
CONTENTS
4.3.1 Primary & Secondary Master/Slave ................................ 49
4.4 Advanced .................................................................................. 54
4.4.1 Chip Configuration .......................................................... 55
4.4.2 I/O Device Configuration ................................................ 57
4.4.3 PCI Configuration ............................................................ 59
4.4.4 Shadow Configuration ..................................................... 62
4.5 Power Menu .............................................................................. 63
4.5.1 Power Up Control ............................................................ 65
4.5.2 Hardware Monitor............................................................ 66
4.6 Boot Menu ................................................................................ 67
4.7 Exit Menu ................................................................................. 69
5. SOFTWARE SETUP....................................................................... 71
5.1 Operating Systems .................................................................... 71
5.1.1 Windows 98 First Time Installation................................. 71
5.2 MES-N Support CD .................................................................. 72
5.2.1 Installation Menu ............................................................. 72
5.3 Install ASUS PC Probe Vx.xx .................................................. 73
5.4 Install Bus Master IDE Driver .................................................. 74
5.5 Install VGA Driver.................................................................... 75
For Windows 95 .................................................................... 76
5.6 Install Audio Driver (only with onboard audio option) ............ 76
5.7 Install YAMAHA XG-STUDIO................................................ 77
5.8 Install YAMAHAYSTATION32 .............................................. 78
5.9 Install Network Driver .............................................................. 79
5.10 Install PC-Cillin 98 Vx.xx ........................................................ 80
5.11 Install ADOBE AcroBat Reader Vx.x ...................................... 81
5.12 Uninstalling Programs .............................................................. 82
6. SOFTWARE REFERENCE ........................................................... 83
6.1 ASUS PC Probe ........................................................................ 83
6.2 SiS 620 Display Properties ....................................................... 89
6.3 Using YAMAHA XGstudio Player ........................................... 93
6.4 Using YAMAHA XGstudio Mixer ........................................... 95
6.5 YSTATION32 ........................................................................... 97
7. APPENDIX..................................................................................... 103
7.1 ASUS PCI-L101 Fast Ethernet Card ...................................... 103

6 ASUS MES-N 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 inter-
ference 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! Any changes or modifications to this product not expressly ap-
proved by the manufacturer could void any assurances of safety or performance
and could result in violation of Part 15 of the FCC Rules.
CanadianDepartment of CommunicationsStatement
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 Cana-
dian Department of Communications.
This Class B digital apparatus complies with Canadian ICES-003.
CetappareilnumériquedelaclasseBestconformeàlanormeNMB-003duCanada.

ASUS MES-N User’s Manual 7
1.INTRODUCTION
Sections/Checklist
1.1 How This Manual Is Organized
This manual is divided into the following sections:
1) INTRODUCTION Manual information and checklist
2) FEATURES Product information and specifications
3) HARDWARE SETUP Instructions on setting up the motherboard
4) BIOS SETUP Instructions on setting up the BIOS software
5) SOFTWARE SETUP Instructions on setting up the included software
6) SOFTWARE REFERENCE Reference material for the included software
7) APPENDIX Optional items and general reference
1.2 Item Checklist
Check that your package is complete. If you discover damaged or missing items,
please contact your retailer.
1.2.1 Motherboard
(1) ASUS Motherboard
(1) Support CD with drivers and utilities
(1) This Motherboard User’s Manual
(1) NLX form-factor system housing, riser card, and power supply
ASUS slim CD-ROM (optional)
LCD panel connector with bracket (for LCD model only)
ASUS IrDA-compliant infrared module (optional)
ASUS PCI-L101 Wake-On-LAN 10/100 Fast Ethernet Card (optional)
NOTE: This motherboard only works with ASUS riser cards. See your dealer for
more information.
1.2.2 Riser Card
(1) ASUS Riser Card
(1)RibboncableformasterandslaveUltraDMA/33&UltraDMA/66IDEdrives
(1) Ribbon cable for (1) 3.5” floppy disk drive
(1) FDC slim CD-ROM cable
(1) Bag of spare jumper caps
1. INTRODUCTION

8 ASUS MES-N User’s Manual
2. FEATURES
Features
2.FEATURES
2.1 The ASUS MES-N Motherboard
The ASUS MES-N motherboard is carefully designed for the demanding PC user
who wants many intelligent features in a small package.
2.1.1 Specifications
•Intel Processor Support: Supports Intel’s Celeron processor designed for the
Socket 370 and packaged in Plastic Pin Grid Array (PPGA).
•SiS AGPset: SiS 620 AGPset with built-in 6326 AGP 2X graphics controller
supports a 100MHz Front Side Bus (FSB) and UltraDMA/66, which allows burst
mode data transfer rates of up to 66.6MB/sec.
•Enhanced ACPI & Anti-Boot Virus BIOS: Programmable BIOS (Flash
EEPROM),offeringenhancedACPI forWindows 98 compatibility, built-in firm-
ware-based virus protection, and autodetection of most devices for virtually au-
tomatic setup.
•PC100 Memory Support: Equipped with two DIMM sockets to support Intel
PC100-compliant SDRAMs (up to 512MB).
•100/10Mbps LAN: Features an onboard Intel 82559 Ethernet LAN Controller
(fully integrated 10BASE-T/100BASE-TX) and a LANActivity LED for moni-
toring network conditions.
•Integrated Graphics: Integrated AGP 2X graphics controller can use shared
system memory or optional dedicated onboard VGA memory (up to 8MB
SDRAM).
•Onboard PCIAudio withAC’97 CODEC (optional): FeaturesYamaha’s PCI
audio chip with 3D surround and positioning capability and connected to an
audio CODEC that enhances DAC, ADC, and analog mixing quality.
•Riser Card: Provides NLX power, IDE, floppy disk drive, LAN wake-up con-
nectors, PCI/ISA slots, and USB/infrared support.
•Wake-On-LAN Connector: Supports Wake-On-LAN activity through an op-
tional Ethernet card (see 7.1 ASUS PCI-L101 Fast Ethernet Card).
• Super Multi-I/O: Provides two high-speed UART compatible serial ports and
one parallel port with EPP and ECP capabilities.
• Desktop Management Interface (DMI): Supports DMI through BIOS, which
allows hardware to communicate within a standard protocol creating a higher
level of compatibility. (Requires DMI-enabled components.)
•IrDA: Supports an optional infrared port module on the riser card for wireless
interface.
•Slim CD-ROM: Supports an optional ASUS slim CD-ROM drive for ASUS’
custom designed NLX form factor.

ASUS MES-N User’s Manual 9
2. FEATURES
2.FEATURES
Smart Series
•UltraDMA/66 & UltraDMA/33: Comes with an onboard PCI Bus Master IDE
controller with two connectors that support four IDE devices on two channels.
Supports UltraDMA/66, UltraDMA/33, PIO Modes 3 & 4 and Bus Master IDE
DMAMode 2, and Enhanced IDE devices, such as Tape Backup, CD-ROM, CD-
R/RW, and LS-120 drives.
2.1.2 Performance
• 66/100MHzAsynchronous&100/100MHzSynchronousHost/DRAM Clock
Support: CPU frequency can operate at 66MHz or 100MHz while system
memory operates at 100MHz or 66MHz. This can optimize the VGA perfor-
mance under shared memory configuration.
• High-Speed Data Transfer Interface: This motherboard with its chipset and
support for Ultra DMA/66 doubles the Ultra DMA/33 burst transfer rate to
66.6MB/s. Ultra DMA/66 is backward compatible with both DMA/33 and DMA
and with existing DMA devices and systems so there is no need to upgrade cur-
rent EIDE/IDE drives and host systems. (Ultra DMA/66 requires a 40-pin 80-
conductor cable to be enabled and/or for Ultra DMA Mode 4.)
•Concurrent PCI: Concurrent PCI allows multiple PCI transfers from PCI mas-
ter buses to memory to CPU.
• SDRAM Optimized Performance: ASUS smart series motherboards support
the new generation memory, Synchronous Dynamic Random Access Memory
(SDRAM), which increases the data transfer rate to 800MB/s max using PC100-
compliant SDRAM.
• ACPIReady:ACPI (Advanced ConfigurationandPowerInterface) is alsoimple-
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 of ACPI, an ACPI-supported OS, such as Windows
98, must be used.
• PC’98Compliant:Both the BIOS andhardwarelevelsofthemotherboard meets
PC’98compliancy.ThenewPC’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 installation procedures for Windows 95/98/NT.

10 ASUS MES-N User’s Manual
2. FEATURES
Smart Series
2.FEATURES
2.1.3 Intelligence
• Fan Status Monitoring and Alarm: To prevent system overheat and system
damage, the CPU, power supply, and system fans can be monitored for RPM
and failure. All the fans are set for its normal RPM range and alarm thresholds.
•Temperature Monitoring and Alert: To prevent system overheat and system
damage, this motherboard supports Socket 370 processor thermal sensing.
•Voltage Monitoring andAlert: System voltage levels are monitored to ensure
stable current to critical motherboard components. Voltage specifications are
more critical for future processors, so monitoring is necessary to ensure proper
system configuration and management.
• System Resources Alert: Today’s operating systems such as Windows 95/98/
NT, and OS/2, require much more memory and hard drive space to present enor-
mous user interfaces and run large applications. The system resource monitor
will warn the user before the system resources are used up to prevent possible
application crashes. Suggestions will give the user information on managing
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
an important feature to implement silent PC systems.
• Remote Ring On (requires modem): This allows a computer with this
motherboard to be turned on remotely through an internal or external modem.
With this feature, users can access their computer from 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.
• Keyboard Wake Up: Keyboard Wake Up can be enabled or disabled to allow
the computer to be powered ON using your keyboard.

ASUS MES-N User’s Manual 11
2.2 Motherboard Parts
2. FEATURES
2.FEATURES
Motherboard Parts
19
21
20
18 17 16 15
9
321 456 7 8
10
11
12
13
14
12
13
14
15
16
17
18
19
20
21
COM1 Connector (B)
Parallel Connector (T)
COM2 Connector (B)
PS/2 Mouse (T)/Keyboard (B) Connector
RJ-45 Connector
LAN LED
VGA Connector
Joystick/MIDI Connector
LCD Header (w/ LCD Chip onboard)
LCD Chip (optional)
Audio CODEC (optional)
1
2
3
4
5
6
7
8
9
10
11
LAN Controller Chip (optional)
Yamaha Audio Chip (on audio model only)
Slim CD-ROM Connector
Programmable Flash EEPROM
SiS South Bridge
with Integrated Hardware Monitoring
Multi-I/O Chip
CPU ZIF Socket 370
DIMM Sockets
SiS Chipset with Heatsink
Optional VGA Memory (up to 8MB)
T:Top
B: Bottom

12 ASUS MES-N User’s Manual
3. HARDWARE SETUP
Motherboard Layout
3.H/WSETUP
®
TOP:
MOUSE
BOTTOM:
KEYBOARD
VGA
Flash EEPROM
(Programmable BIOS)
CR2032 3V
Lithium Cell
(CMOS Power)
Row
JACK_CON
CHASIS_FAN
LAN_LED
LAN
AUDIO_EN
MODEM
KB_UP
Socket 370
Yamaha
Audio
Chipset
MES-N
SiS5595
with Hardware
Monitor &
Keyboard
Controller
SiS 620
Chipset
(Integrated
AGP 2X VGA)
CD_IN AUX_IN
LCDHD
2 MB
SDRAM
2 MB
SDRAM
RJ-45
PS/2
KB
MS
Parallel
Port
Connector
COM 1 COM 2 Joystick/MIDI
Super I/O
CDROM Connector
GAME
FREQ
MULT
BF3 BF2 BF1 BF0
CL_RTC
BUS
FREQ
FS0 FS1 FS2 FS3
CPU_FAN
DIMM Socket 2 (64/72-bit, 168-pin module)
32
DIMM Socket 1 (64/72-bit, 168-pin module)
10
2 MB
SDRAM
2 MB
SDRAM
PCTS
VIRQ VEN_DIS
SCTS
Audio
Codec
Intel Fast
Ethernet
LCD
Encoder
3.1 Motherboard Layout
Grayed items are optional at the time of purchase.

ASUS MES-N User’s Manual 13
3. HARDWARE SETUP
Motherboard Settings
1) KB_UP p.18 Keyboard Wake Up Setting (Enable/Disable)
2) VEN_DIS p.18 Onboard VGA Setting (Enable/Disable)
3) VIRQ p.19 VGA IRQ Setting (Enable/Disable)
4) AUDIOEN p.19 Onboard Audio Setting (Enable/Disable)
5) LAN p.20 Onboard LAN Setting (Enable/Disable)
6) PCTS p.20 Primary Cable Type Status (80 pin/40 pin)
7) SCTS p.21 Secondary Cable Type Status (80 pin/40 pin)
8) FS0, FS1, FS2, FS3 p.22 CPU External Frequency Setting
9) BF0, BF1, BF2, BF3 p.23 CPU Core:External Frequency Multiple Setting
10) CL_RTC p.53 CMOS RTC RAM Setting
Sockets
1) DIMM1, DIMM2 p.24 168-Pin DIMM Memory Support
2) Socket 370 p.26 Central Processing Unit (CPU) Socket
Back Panel Connectors
1) PARALLEL p.29 Parallel Port Connector (25-pin female)
2) COM1/COM2 p.29 Serial Port Connector (Two 9-pin male)
3) PS2KBMS p.30 PS/2 Mouse Port Connector (6-pin female)
4) PS2KBMS p.30 PS/2 Keyboard Port Connector (6-pin female)
5) RJ-45 p.30 Fast-Ethernet Port Connector (optional)
6) LAN_LED p.30 LAN Diagnostic LEDs
7) VGA p.31 Monitor (VGA) Output Connector (15-pin female)
8) GAME p.31 Joystick/MIDI Connector (15-pin female) (optional)
Midboard Connectors
1) CHASIS_, CPU_FAN p.32 Chassis & CPU Fan Connectors (Two 3 pins)
2) CDROM p.32 CDROM Connector (50-1 pins)
3) CD_IN/AUX_IN/MODEM_IN p.33 Internal Audio Connectors (Four 4 pins)
4) JACK_CON p.33 Audio Jack Connector (10-1 pins)
5) LCDHD p.34 LCD Output Header (20-1 pins)
Motherboard Contents
3. H/W SETUP

14 ASUS MES-N User’s Manual
3.2 Riser Card Layout
3. HARDWARE SETUP
RiserCardParts&Layout
3. H/W SETUP
FLOPPY
PCI2
PCI1
ISA
FCON
NLX_EXT NLX_SLOT
LAN LED
MIC-CON
NLX-R Riser Card Front
WOL_CON
®
NLX-R
CHASS_DET
USB
HEAD_SPK
ATXPWR
B9-N Riser Card Back
PCI3
PCI2
PCI1
ISA
NLX_EXT NLX_SLOT
IDEB
IR
LED_CTRL
®
B9-N
WAKEUP
JP-2K
IDEA
FLOPPY
CHASS_DET
USB1
B9-N Riser Card Front
HEAD_SPK
IDE1
POWER
IR
NLX-R Riser Card Back
CIR
FLOPPY
PCI1
PCI2
SLOT1
NLX_EXT RISER
MIC
Yeong-Yang Riser Card Front
WOL_CON
YEONG-YANG
USB
IR
PWRLED HDD_LED RESET PWRSW SPKR
IDE1
IDE2
CDIN
SLOT1A
SWITCH
Panel
Yeong-Yang Riser Card Back
Power
3.2.1 NLX-R
3.2.2 B9-N
3.2.3 Yeong-Yang

ASUS MES-N User’s Manual 15
Expansion Slots
1) ISA (NLX-R) p.27 16-bit ISA Bus Expansion Slot
ISA (B9-N) 16-bit ISA Bus Expansion Slot
SLOT1/1A (Yeong-Yang) 16-bit ISA Bus Expansion Slot
2) PCI1, PCI2 (NLX-R) p.27 32-bit PCI Bus Expansion Slots
PCI1, PCI2, PCI3 (B9-N) 32-bit PCI Bus Expansion Slots
PCI1, PCI2 (Yeong-Yang) 32-bit PCI Bus Expansion Slots
Connectors
1) LAN_LED (NLX-R) p.35 LAN Activity Connector (2 pins)
WOL_CON (NLX-R) LAN Activity Connector (3 pins)
WAKEUP (B9-N) LAN Activity Connector (3 pins)
WOL_CON (Yeong-Yang) LAN Activity Connector (3 pins)
2) MIC-CON (NLX-R) p.35 Front Panel Microphone Connector (2 pins)
JP-2K (B9-N) Front Panel Microphone Connector (2 pins)
MIC (Yeong-Yang) Front Panel Microphone Connector (2 pins)
3) POWER (NLX-R) p.36 NLX Power Supply Connector (20 pins)
ATXPWR (B9-N) NLX Power Supply Connector (20 pins)
Power (Yeong-Yang) NLX Power Supply Connector (20 pins)
4) IDE1 (NLX-R) p.36 IDE Connector (40-1 pins)
IDEA, IDEB (B9-N) IDE Connectors (40-1 pins)
IDE1, IDE2 (Yeong-Yang) IDE Connectors (40-1 pins)
5) FLOPPY (NLX-R) p.37 3.5” Floppy Disk Drive Connnector (34-1 pins)
FLOPPY (B9-N) 3.5” Floppy Disk Drive Connnector (34-1 pins)
FLOPPY (Yeong-Yang) 3.5” Floppy Disk Drive Connnector (34-1 pins)
6) USB (NLX-R) p.37 Universal Serial Bus (USB) Ports (Two 4-pin sockets)
USB1 (B9-N) Universal Serial Bus (USB) Ports (Two 4-pin sockets)
USB (Yeong-Yang) USB Module Connector (5-1 pins)
7) IR, CIR (NLX-R) p.38 IrDA-Compliant Infrared Module (Lenses)
IR (B9-N) Infrared Module Connector (10-1 pins)
IR (Yeong-Yang) Infrared Module Connector (5-1 pins)
8) CDIN (Yeong-Yang) p.39 Stereo Audio In Connector (4 pins)
9) FCON/HEAD_SPK(NLX-R) p.39 Front Panel Connector (16-1 pins)
LED_CTRL/HEAD_SPK (B9-N) Front Panel Connector (16-1 pins)
Panel (Yeong-Yang) Front Panel Connectors (13 pins)
3. HARDWARE SETUP
Riser Card Contents
3. H/W SETUP

16 ASUS MES-N User’s Manual
(This page was intentionally left blank.)

ASUS MES-N User’s Manual 17
3. HARDWARE SETUP
Motherboard Settings
3.H/WSETUP
3.3 Hardware Setup Procedure
NOTE: The following procedure assumes that you have already installed the
motherboards in an appropriate housing or case.
Before using your computer, you must complete the following steps:
1. Check Motherboard Settings
2. Install Memory Modules
3. Install the Central Processing Unit (CPU)
4. Install Expansion Cards
5. Connect Ribbon Cables, Panel Wires, and Power Supply
3.4 Motherboard Settings
This section explains in detail how to change your motherboard’s function settings
through the use of switches and/or jumpers.
WARNING! Computer motherboards and expansion cards contain very delicate
Integrated Circuit (IC) chips. To protect them against damage from static electric-
ity, 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
nothave 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 con-
nectors, or other components.
4. Placecomponentsonagrounded antistatic pad or onthebagthatcame with the
component whenever the components are separated from the system.

18 ASUS MES-N User’s Manual
3. HARDWARE SETUP
Motherboard Settings
3.H/WSETUP
1) Keyboard Power Up Setting (3-pin KB_UP)
This allows you to disable or enable the keyboard power up function. Set this
jumper to Enable if you wish to use your keyboard (by pressing any key or the
spacebar depending on your motherboard) to power up your computer. This
feature requires an NLX power supply that can supply at least 300mA on the
+5VSB lead. The default is set to Disable because not all computers have the
appropriate NLX power supply. Your computer will not power ON if you set
this to Enable and do not have the appropriate NLX power supply.
2) Onboard VGA Setting (VEN_DIS)
The onboard AGP VGA may be enabled or disabled using this switch. Disable
the onboard VGA if you are using a VGAcard on the expansion slot.
Setting VEN_DIS
Enable [2-3] (default)
Disable [1-2]
MES-N Onboard VGA Setting
VEN_DIS
Enable
(Default)
3
2
1
Disable
3
2
1
®
TOP:
MOUSE
BOTTOM:
KEYBOARD
MES-N
MES-N Keyboard Wake Up
Disable
(Default)
321
Enable
321
KB_UP
®
TOP:
MOUSE
BOTTOM:
KEYBOARD
MES-N

ASUS MES-N User’s Manual 19
3. HARDWARE SETUP
Motherboard Settings
3.H/WSETUP
3) VGA IRQ Setting (VIRQ)
VIRQ allows you to set the VGA interrupt method. Some TV tuners or MPEG
cards may require the interrupt to be assigned by the onboard chipset, in which
case VIRQ must be enabled (default setting). The default enables the chipset’s
internal interrupt routing.
Setting VIRQ
Enable [2-3] (default)
Disable [1-2]
4) Onboard Audio Setting (AUDIOEN)
The onboard 32-bit PCI audio may be enabled or disabled using this jumper.
Disable the onboard audio if you are using an audio card on the expansion slot.
NOTE: This setting is available only on motherboards with the onboard audio
option.
Setting AUDIOEN
Enable [2-3] (default)
Disable [1-2]
MES-N Onboard Audio Setting
Enable
(Default)
AUDIO_EN
Disable
3
2
1
3
2
1
®
TOP:
MOUSE
BOTTOM:
KEYBOARD
MES-N
MES-N Onboard VGA IRQ Setting
VIRQ
Enable
(Default)
3
2
1
Disable
3
2
1
®
TOP:
MOUSE
BOTTOM:
KEYBOARD
MES-N

20 ASUS MES-N User’s Manual
6) Primary Cable Type Status (PCTS)
Setting this jumper to 80-pin will allow an UltraDMA/66 IDE device that is
connected to the primary IDE connector with a 40-pin 80-conductor IDE cable
to handle transfer rates up to 66MB/s.
Setting PCTS
40 pin [2-3] (default)
80 pin [1-2]
3. HARDWARE SETUP
Motherboard Settings
3.H/WSETUP
5) Onboard LAN Setting (LAN_EN) available on LAN model only
The onboard LAN may be enabled or disabled by this jumper.
Setting LAN_EN
Enable [1-2] (default)
Disable [2-3]
MES-N Onboard LAN Setting
LAN
Enable
(Default)
3
2
1
Disable
3
2
1
®
TOP:
MOUSE
BOTTOM:
KEYBOARD
MES-N
MES-N Primary Cable Type Status
PCTS
40-pin Cable
(Default)
3
2
1
80-pin Cable
3
2
1
®
TOP:
MOUSE
BOTTOM:
KEYBOARD
MES-N