Asus CUV266 User manual

®
CUV266
JumperFree™DDR SDRAM
133MHz FSB AGP Pro/4X
Socket 370 Motherboard
USER’S MANUAL

ASUS CUV266 User’s Manual
2
USER'S NOTICE
Product Name: ASUS CUV266
Manual Revision: 1.06 E761
Release Date: April 2001
No part of this manual, including the products and software described in it, may be reproduced,
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 MERCHANTABILITY OR FITNESS FORAPARTICULAR PURPOSE. IN
NO EVENT SHALLASUS, ITS DIRECTORS, OFFICERS, EMPLOYEES ORAGENTS BE LIABLE
FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
(INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE OR
DATA, INTERRUPTION OF BUSINESSAND THE LIKE), EVEN IFASUS HAS BEENADVISED
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 by ASUS; 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 trademarks or
copyrights of their respective companies, and are used only for identification or explanation and to
the owners’ benefit, without intent to infringe.
• Intel and Pentium are registered trademarks of Intel Corporation.
• VIA is a registered trademark of VIA Technologies, Inc.
• 3Com is a registered trademark of 3Com Corporation.
• C-Media is a registered trademark of C-Media Electronics Inc.
• Windows and MS-DOS are registered trademarks of Microsoft Corporation.
• Adobe and Acrobat are registered trademarks ofAdobe Systems Incorporated.
• Trend and ChipAwayVirus are trademarks of Trend Micro, Inc.
• Symbios is a registered trademark of Symbios Logic Corporation.
The product name and revision number are both printed on the product itself. Manual revisions 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, contact ASUS 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 FURNISHED
FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME
WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS.
ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR
INACCURACIES THAT MAYAPPEAR INTHIS MANUAL, INCLUDING THE PRODUCTSAND
SOFTWARE DESCRIBED IN IT.
Copyright © 2001 ASUSTeK COMPUTER INC. All Rights Reserved.

ASUS CUV266 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
MB/Others (Tel): [phone] (English)
Notebook (Tel): [phone] (English)
Desktop/Server (Tel):[phone] (English)
Fax: [phone]
Email: [email protected]
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]
Email: [email protected]
WWW: www.asus.com
FTP: ftp.asus.com/Pub/ASUS
ASUS COMPUTER GmbH (Europe)
Marketing
Address: Harkortstr. 25, 40880 Ratingen, BRD, Germany
Fax: [phone]
Email: [email protected] (for marketing requests only)
Technical Support
Hotline: MB/Others: [phone] Notebook:[phone]
Fax: [phone]
Support (Email): www.asuscom.de/de/support (for online support)
WWW: www.asuscom.de
FTP: ftp.asuscom.de/pub/ASUSCOM

ASUS CUV266 User’s Manual
4
CONTENTS
1. INTRODUCTION ............................................................................. 7
1.1 How This Manual Is Organized ................................................... 7
1.2 Item Checklist .............................................................................. 7
2. FEATURES ........................................................................................ 8
2.1 ASUS CUV266 Motherboard ...................................................... 8
2.1.1 Specifications ..................................................................... 8
2.1.2 Performance...................................................................... 10
2.1.3 Intelligence ....................................................................... 11
2.2 Motherboard Components.......................................................... 12
2.2.1 Component Locations....................................................... 13
3. HARDWARE SETUP ...................................................................... 14
3.1 Motherboard Layout .................................................................. 14
3.2 Layout Contents ......................................................................... 15
3.3 Hardware Setup Procedure......................................................... 17
3.4 Motherboard Settings ................................................................. 17
3.5 System Memory ......................................................................... 23
3.5.1 General DIMM Notes....................................................... 23
3.5.2 Memory Installation ......................................................... 24
3.6 Central Processing Unit (CPU) .................................................. 25
3.6.1 CPU Installation ............................................................... 26
3.7 Expansion Cards ........................................................................ 27
3.7.1 Installing an Expansion Card ........................................... 27
3.7.2 Assigning IRQs for Expansion Cards .............................. 28
3.7.3 Accelerated Graphics Port (AGP) Pro Slot ...................... 29
3.7.4 Advanced Communication Riser (ACR)) Slot ................. 30
3.8 Connectors ................................................................................ 31
3.8.1 External Connectors ......................................................... 31
3.8.2 Internal Connectors .......................................................... 34
3.9 Starting Up the First Time.......................................................... 45
4. BIOS SETUP..................................................................................... 47
4.1 Managing and Updating Your BIOS .......................................... 47
4.1.1 Upon First Use of the Computer System.......................... 47
4.1.2 Updating BIOS Procedures .............................................. 49
4.2 BIOS Setup Program.................................................................. 51
4.2.1 BIOS Menu Bar................................................................ 52
4.2.2 Legend Bar ....................................................................... 52

ASUS CUV266 User’s Manual 5
CONTENTS
4.3 Main Menu ................................................................................. 54
4.3.1 Primary & Secondary Master/Slave ................................. 55
4.3.2 Keyboard Features............................................................ 58
4.4 Advanced Menu ......................................................................... 60
4.4.1 Chip Configuration........................................................... 64
4.4.2 I/O Device Configuration ................................................. 67
4.4.3 PCI Configuration ............................................................ 69
4.4.4 Shadow Configuration ...................................................... 73
4.5 Power Menu ............................................................................... 74
4.5.1 Power Up Control............................................................. 76
4.5.2 Hardware Monitor ............................................................ 78
4.6 Boot Menu ................................................................................. 79
4.7 Exit Menu................................................................................... 81
5. SOFTWARE SETUP....................................................................... 83
5.1 Operating Systems ..................................................................... 83
5.1.1 Windows 98 First Time Installation ................................. 83
5.2 CUV266 Motherboard Support CD ........................................... 83
5.2.1 Installation Menus ............................................................ 83
5.2.2 Applications...................................................................... 84
5.2.3 Audio Feature Setup ......................................................... 86
6. SOFTWARE REFERENCE ........................................................... 87
6.1 ASUS PC Probe ......................................................................... 87
6.1.1 Starting ASUS PC Probe .................................................. 87
6.1.2 Using ASUS PC Probe ..................................................... 88
6.1.3 ASUS PC Probe Task Bar Icon ........................................ 92
7. APPENDIX........................................................................................ 93
7.1 PCI-L101 Fast Ethernet Card..................................................... 93
7.1.1 Features ............................................................................ 94
7.1.2 Software Driver Support .................................................. 94
7.1.3 Question and Answer........................................................ 94
7.2 Modem Riser.............................................................................. 95
7.2.1 56K Software Modem ...................................................... 95
7.2.2 Primary/Seconday MR ..................................................... 95
7.2.3 Hardware Installation Procedure ...................................... 95
7.2.4 Software Setup in Windows 98 ........................................ 96
7.3 Glossary ..................................................................................... 97
INDEX ................................................................................................. 101

ASUS CUV266 User’s Manual
6
FCC & DOC COMPLIANCE
Federal Communications 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
installation.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
interference 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!Anychanges or modifications tothisproduct not expressly approved
by the manufacturer could void any assurances of safety or performance and
could result in violation of Part 15 of the FCC Rules.
Reprinted from the Code of Federal Regulations #47, part 15.193, 1993. Washington DC: Office of the
Federal Register, National Archives and Records Administration, U.S. Government Printing Office.
Canadian Department 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.
This Class B digital apparatus complies with Canadian ICES-003.
Cetappareil numérique de la classe BestconformeàlanormeNMB-003duCanada.

ASUS CUV266 User’s Manual 7
1.1 How This Manual Is Organized
This manual is divided into the following sections:
1. INTRODUCTION Manual information and checklist
2. FEATURES Production information and specifications
3. HARDWARE SETUP Instructions on setting up the motherboard.
4. BIOS SETUP Instructions on setting up the BIOS
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,
contact your retailer.
1. INTRODUCTION
1. INTRODUCTION
Manual / Checklist
Package Contents
(1) ASUS Motherboard
(1) 40-pin 80-conductor ribbon
cable for internal UltraDMA/66
or UltraDMA/33 IDE drives
(1) Ribbon cable for two 3.5”
floppy disk drives
(1) ASUS Support CD with drivers
and utilities
(1) Bag of spare jumper caps
(1) ASUS 2-port USB Connector
Set
(1) User’s Manual
Optional Items
ASUS IrDA-compliant infrared
module
ASUS PCI-L101 Wake-On-LAN
10/100 Ethernet Card

8ASUS CUV266 User’s Manual
2.1 ASUS CUV266 Motherboard
The ASUS CUV266 motherboard is targeted diversely for home PCs, workstations
andservers. PoweredbytheIntel
®
Pentium
®
IIIprocessorandbundledwithadvanced
features to provide superlative performance, the CUV266 efficiently complies with
today’s demand for a flexible high-integration system.
2.1.1 Specifications
•Latest Processor Support
Intel Pentium III 133MHz FSB Coppermine core FC-PGA
Intel Pentium III 100MHz FSB Coppermine core FC-PGA
•North Bridge System Chipset: Features the VIA VT8633 North Bridge that
supports AGP Pro/4X/2X mode, 133/100MHz Front Side Bus (FSB), and
266/200MHz memory bus.
•South Bridge System Chipset: VIA VT8233 integrated peripheral controller
supportsUltraDMA/100/66/33forburstmodedata transfer rates of up to 100MB/
sec, and USB controller with three root hubs for six USB ports.
•DDR Memory Support: Equipped with three Double Data Rate (DDR) Dual
Inline Memory Module (DIMM) sockets to support up to 3GB of memory using
the latest high-speed 2.5V PC1600/PC2100 SDRAM modules.
•JumperFree™Mode: Allows processor settings and easy overclocking of
frequency and Vcore voltage through BIOS setup when the JumperFree™mode
is enabled. Easy-to-use DIP switches come with the motherboard board to allow
manual adjustment of the processor external/internal frequency.
•UltraDMA/100Support:Comes withanonboard PCI Bus MasterIDEcontroller
with two connectors that support four IDE devices on two channels. Supports
UltraDMA/100, UltraDMA/66, UltraDMA/33, PIO Modes 3 & 4, Bus Master
IDE DMA Mode 2, and Enhanced IDE devices, such as DVD-ROM, CD-ROM,
CD-R/RW, LS-120, and Tape Backup drives.
•AGP Pro Slot: Comes with an Accelerated Graphics Port (AGP) Pro slot that
supports high performance AGP cards targeted at 3D graphical applications
supporting 133MHz 4X mode. The slot is backward compatible with AGP 4X/
2X cards.
•LANSupport:Features the 3Com
®
3C920 EtherLink
®
10/100 PCI LAN chipset
that fully supports 10BASE-T/100BASE-TX.
•Wake-On-LAN: Supports Wake-On-LAN activity through a WOL connector
or an optional ASUS PCI-L101 10/100 Fast Ethernet PCI card.
•Wake-On-Ring: Supports Wake-On-Ring activity through a PCI modem card
that supports a WOR connector.
2. FEATURES
Specifications
2. FEATURES

ASUS CUV266 User’s Manual 9
2. FEATURES
2. FEATURES
Specifications
•PC Health Monitoring: Provides an easy way to test and manage system status
information, such as CPU and system voltages, temperatures, and fan status
through the onboard hardware ASUS ASIC and the bundled ASUS PC Probe.
•SMBus: Features the System Management Bus interface used to physically
transport commands and information between SMBus devices.
•PCI Expansion Slots: Provides five 32-bit PCI (Rev. 2.2) expansion slots that
support Bus Master PCI cards, such as SCSI or LAN cards, with 133MB/s
maximum throughput.
•Super Multi-I/O: Provides two high-speed UART compatible serial ports and
one parallel port with EPP and ECP capabilities. UART2 can also be directed
from COM2 to the Infrared Module for wireless connections. The Super I/O
controller also supports a floppy disk drive, PS/2 keyboard, and PS/2 mouse.
•SmartBIOS:2Mb firmware provides Vcore and CPU/DDR SDRAM frequency
adjustments,bootblock write protection, and HD/SCSI/MO/ZIP/CD/Floppy boot
selection.
•EnhancedACPIandAnti-BootVirus Protection: Programmable BIOS (Flash
EEPROM) that offers enhancedACPI for Windows 98/2000/ME compatibility,
built-in firmware-based virus protection, and autodetection of most devices for
a virtual automatic setup.
•IrDA: Supports an optional infrared port module for wireless interface.
•Desktop Management Interface (DMI): Supports DMI through BIOS that
allows hardware to communicate within a standard protocol and create a higher
level of compatibility. (Requires DMI-enabled components.)
•Onboard LED: Comes with a power LED that lights up if there is any standby
power on the motherboard. This LED acts as a reminder to turn off the system
power before plugging or unplugging devices to prevent damage to the
motherboard, peripherals, and other system components.
•OnboardAudio: Audio models come with the six-channel C-Media CMI8738
PCI audio controller that supports the legacy audio SBPRO™, FM emulator/
DLS wavetable music synthesis, and HRTF 3D positional audio functions.
•Easy Connectivity and System Information Access: Supports an optional
ASUS iPanel, an easy-to-access box with system diagnostic display area, system
status LEDs, USB ports, and hot keys. The AFPANEL connector on the
motherboard accommodates the ASUS iPanel.
•Smartcard Reader Connector: Features a connector that provides the
convenience of financial, telephony, and traveling services through the optional
Smartcard Reader interface.
•Advanced Communication Riser (ACR): Features an ACR slot for the
Advanced Communication Riser card. TheACR specification supports modem,
audio, and LAN technologies. TheACR is backward compatible with theAudio
Modem Riser (AMR).

10 ASUS CUV266 User’s Manual
2. FEATURES
Performance
2. FEATURES
2.1.2 Performance
•ACPI Ready: Advanced Configuration Power Interface (ACPI) provides more
Energy Saving Features for operating systems that support OS Direct Power
Management (OSPM) functionality. With these features employed in the OS,
PCs can be ready around the clock but comply with energy saving standards. To
fully utilize theACPI benefits, use anACPI-supported OS such as Windows 98.
•PC’99 Compliant: Both the BIOS and hardware levels of ASUS smart series
motherboards are PC’99 compliant. The new PC’99 requirements for systems
and components are based on the following high-level goals: Support for Plug-
n-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. Color-coded connectors and descriptive icons make
identification easy as required by PC’99.
•High-Speed Data Transfer Interface: Support for UltraDMA/100 through the
onboard IDE bus master controller triples the UltraDMA/33 burst transfer rate.
UltraDMA/100 is backward compatible with DMA/66, DMA/33, and other
existing DMA devices to save the need to upgrade current EIDE/IDE drives.
(UltraDMA/66 requires a 40-pin 80-conductor cable).
•Concurrent PCI: ConcurrentPCI allows multiple PCI transfers from PCI master
busses to the memory and processor.

ASUS CUV266 User’s Manual 11
2. FEATURES
2. FEATURES
Intelligence
2.1.3 Intelligence
•Auto Fan Off: The system fans powers off automatically even in sleep mode.
This function reduces both energy consumption and system noise, and is an
important feature in implementing silent PC systems.
•DualFunctionPower Button:Pushing the power button for less than 4 seconds
when the system is in the working state places the system into one of two states:
sleep mode or soft-off mode, depending on the BIOS or OS setting (see PWR
Button < 4 Secs in 4.5 Power Menu). When the power button is pressed for
more than 4 seconds, the system enters the soft-off mode regardless of the BIOS
setting.
•Fan Status Monitoring and Alarm: To prevent system overheat and system
damage, the CPU and system fans can be monitored for RPM and failure. All
fans are set for its normal RPM range and alarm thresholds.
•PowerLED(requiresACPI OSsupport):The powerLED indicates thesystem
status.
•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, users
can access vital information from their computers anywhere.
•System Resources Alert: Today’s operating systems such as Windows 98/ME
and Windows NT/2000, require much more memory and hard drive space to
presentenormous user interfaces and run largeapplications. The system resource
monitorwarns the user before the system resources are used up topreventpossible
application crashes. Suggestions provide the user some information on managing
their limited resources more efficiently.
•Temperature Monitoring and Alert: CPU temperature is monitored by the
ASUS ASIC through the CPU’s internal thermal diode (on Pentium III and
Celeron) to prevent system overheat and system damage.
•Voltage Monitoring andAlert: System voltage levels are monitored to ensure
stable voltage to critical motherboard components. Voltage specifications are
more critical for future processors, so monitoring is necessary to ensure proper
system configuration and management.
•Chassis Intrusion Detection: Supports chassis-intrusion monitoring through
the ASUS ASIC. A chassis intrusion event is kept in memory on battery power
for more protection.

12 ASUS CUV266 User’s Manual
2. FEATURES
2. FEATURES
M/B Components
Location
Processor Support Socket 370 for Pentium III Coppermine Processors ................ 2
Feature Setting DIP Switches ................................................. 13
Chipsets VIAVT8633 North Bridge ....................................................... 3
VIAVT8233 South Bridge ..................................................... 16
iTE IT8703F-A Super I/O Controller ..................................... 15
2Mbit Programmable Flash EEPROM ..................................... 7
Main Memory Maximum 3GB support
3 DDR DIMM Sockets ............................................................. 1
Expansion Slots 5 PCI Slots .............................................................................. 22
1 Accelerated Graphics Port (AGP) Pro/4X Slot ................... 23
1 Advanced Communication Riser ......................................... 18
System I/O 1 Floppy Disk Drive Connector ............................................... 4
2 IDE Connectors (UltraDMA/100 Support) ........................... 6
1 ASUS iPanel Connector ...................................................... 12
1 Parallel Port ............................................................... (Top) 25
2 Serial Ports (COM1/COM2) ............................... (Bottom) 25
USB Connectors (Port 0 & Port 1) ........................ (Bottom) 26
USB Connectors (Ports 2/3/4/5) ............................................. 14
1 PS/2 Mouse Connector .............................................. (Top) 27
1 PS/2 Keyboard Connector ................................... (Bottom) 27
Network Features 3Com™3C920 EtherLink 10/100 PCI LAN chipset ............ 18
LAN Connector (RJ-45) ............................................... (Top) 26
Wake-On-LAN Connector...................................................... 17
Wake-On-Ring Connector ...................................................... 10
Hardware Monitoring System Voltage Monitoring (integrated in ASUS ASIC) ......... 8
3 Fan Power and Speed Monitoring Connectors
Special Feature Onboard LED ........................................................................... 9
Infrared Connector ................................................................. 11
Audio Features (on audio models only)
CMI8738 Audio Controller .................................................... 21
1 Game/MIDI Port........................................................ (Top) 24
1 Line Out Connector ..................................... (Bottom, left) 24
1 Line In Connector................................... (Bottom, center) 24
1 Microphone Connector ............................. (Bottom, right) 24
Internal Audio Connectors...................................................... 20
Power ATX Power Supply Connector ................................................. 5
Form Factor ATX
2.2 Motherboard Components
See opposite page for locations.

ASUS CUV266 User’s Manual 13
2. FEATURES
2. FEATURES
Motherboard Parts
2.2.1 Component Locations
22
27
25
24
26
2
23
3 64 5
81114 717
18
19
9
1
12131516
20
21
10

14 ASUS CUV266 User’s Manual
3. HARDWARE SETUP
3.1 Motherboard Layout
Motherboard Layout
3. H/W SETUP
24.5cm (9.64in)
30.5cm (12.0in)
Secondary IDE
CHA_FAN
CLR_RTC
Primary IDE
ATX Power Connector
PANEL
PCI 2
WOL_CON SMB_CON
FLOPPY
CUV266
VIA
VT8233
Chipset
ASUS
ASIC
with Hardware
Monitor
JTPWR
PCI 1
CPU_FAN
IR_CON
Accelerated Graphics Port (AGP Pro)
VIA
VT8633
Chipset
Flash EEPROM
(Programable BIOS)
CR2032 3V
Lithium Cell
CMOS Power
PCI 4
PCI 3
PCI 5
GAME_AUDIO
Mic
In
Line
Out
Line
In
WOR
AUX
MODEM
CD
PLED
JEN
VIO3
PS/2
T: Mouse
B: Keyboard
COM1
PARALLEL PORT
COM2
DIP Switches
AFPANEL
ACR
Socket 370
01
DDR DIMM1 (64/72 bit, 184-pin module)
0 1
01
DDR DIMM3 (64/72 bit, 184-pin module)
5 6
01
DDR DIMM2 (64/72 bit, 184-pin module)
3 4
C-Media
CMI-8738
Super
I/O
USB4_5
VIO2
SMARTCARD
IDELED
USB45_PWR
USB2_3
USB23_PWR
ACRUSB1ACRUSB2
LAN_EN
HPHONE
AUDIO_EN
AAPANEL
SPDIFOUT
CDSPDIFIN
PWR_FAN
MIC2
USB1_PWR
FREQ_SEL
3Com
Fast
Enternet
USB
T: USB1
B: USB2
Top:
RJ-45
CHASSIS
NOTE: The C-Media CMI8738 audio chipset, internal and external audio
connectors, 3Com Fast Ethernet chipset, RJ-45 connector, related audio and
LAN jumpers, and AAPANEL connector are optional components. These
components are grayed in the above motherboard layout.

ASUS CUV266 User’s Manual 15
3. HARDWARE SETUP3. HARDWARE SETUP
3.2 Layout Contents
Motherboard Settings
1) JEN p. 18 JumperFree Mode Setting (Disable/Enable)
2) DIP_SW 1–5 p. 19 CPU External Frequency Selection
3) ACRUSB1/ACRUSB2 p. 20 ACR/USB Selection
4) LAN_EN p. 20 LAN Setting (Disable/Enable)
5) AUDIO_EN p. 21 Onboard Audio Controller (Disable/Enable)
6) USB01_PWR p. 21 USB Device Wake-up (+5V/+5VSB)
USB23_PWR
USB45_PWR
7) VIO2/VIO3 p. 22 I/O Voltage Settings (2.65V/2.75V/2.9V)
8) CLR_RTC p. 22 Clear RTC RAM
Expansion Slots/Sockets
1) DIMM 1/2/3 p. 23 System Memory Support
2) Socket 370 p. 25 CPU Support
3) PCI 1/2/3/4/5 p. 27 32-bit PCI Bus Expansion Slots
4) AGP Pro p. 29 Accelerated Graphics Port Slot
5) ACR Slot p. 30 Advanced Communication Riser Slot
Internal Connectors
1) PS2KBMS p. 31 PS/2 Mouse Port (6-pin female)
2) PS2KBMS p. 31 PS/2 Keyboard Port (6-pin female)
3) RJ-45 p. 32 Fast Ethernet LAN Port (RJ-45)
4) USB p. 32 Universal Serial Bus Ports 1&2(two4-pin female)
5) PRINTER p. 32 Parallel Port (25-pin female)
6) COM1/COM2 p. 33 Serial Ports (9-pin /10-1 pin male)
7) GAME_AUDIO (Top) p. 33 Game/MIDI Port (15-pin female)
8) GAME_AUDIO (Bottom) p.33 Audio Connectors (1/8”jacks)
External Connectors
1) IDELED p. 34 IDE Activity LED (2-pin)
2) FLOPPY p. 34 Floppy Disk Drive Connector (34-pin)
3) PRIMARY IDE p. 35 IDE Connectors (Two 40-1 pin)
SECONDARY IDE
4) WOL_CON p. 36 Wake-On-LAN Connector (3-pin)
5) WOR p. 36 Wake-On-Ring Connector (2-pin)
6) CPU/PWR/CHA_FAN p. 37 CPU, Power, and Chassis Fan Connectors (four 3-pin)
7) USB2_3/USB4_5 p. 37 USB Headers (10-1 pin)
8) IR_CON p. 38 Standard Infrared Module Connector (5-pin)
9) CHASSIS p. 38 Chassis Intrusion Lead (2-pin)
10) ATXPWR p. 39 ATX Power Supply Connector (20-pin)
Layout Contents
3. H/W SETUP

16 ASUS CUV266 User’s Manual
3. HARDWARE SETUP
Layout Contents
3. H/W SETUP
11) SMB p. 39 SMBus Connector (5-1 pin)
12) AFPANEL p. 40 ASUS iPanel Connector (24-1 pin)
13) AAPANEL p. 40 Audio Panel Connector (10-1 pin)
14) CD/AUX/MODEM p. 41 Internal Audio Connectors (4-1 pin)
15) MIC2 p. 41 Internal Microphone Connector (3-pin)
16) HPHONE p. 42 Headphone Line Out connector (3-pin)
17) JTPWR p. 42 Power Supply Thermal Sensor (2-pin)
18) SMARTCARD p. 43 Smart Card Reader Connector (14-1 pin)
19) SPDIFOUT p. 43 Digital audio Interfaces (2-pin)
SPDIFIN
20) PWR.LED ( PANEL ) p. 44 System Power LED Lead (3-pin)
21) SPEAKER (PANEL) p. 44 System Warning Speaker Lead (4-pin)
22) MSG.LED (PANEL) p. 44 System Message LED Lead (2-pin)
23) SMI (PANEL) p. 44 System Management Interrupt Lead (2-pin)
24) PWR.SW (PANEL) p. 44 ATX / Soft-Off Switch Lead (2-pin)
25) RESET (PANEL) p. 44 Reset Switch Lead (2-pin)

ASUS CUV266 User’s Manual 17
3. HARDWARE SETUP
3.3 Hardware Setup Procedure
Complete the following steps before using your computer:
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 cables
6. Configure the BIOS parameter settings
3.4 Motherboard Settings
This section tells you how to change motherboard function settings through the
switches and/or jumpers.
3. H/W SETUP
Motherboard Settings
WARNING! Computer motherboards and expansion cards contain very delicate
Integrated Circuit (IC) chips. To avoid damaging them due to static electricity,
follow these precautions whenever you work on your computer.
1. Unplug the computer when working on the internal components.
2. Use a grounded wrist strap or touch a safely grounded object or to a metal
object,such asthe powersupplycase, before handlingcomputercomponents.
3. Hold components by the edges and try not to touch the IC chips on them.
4. Wheneveryouuninstallanycomponent,placethecomponentsonagrounded
antistatic pad or in the bag that came with the components.
5. Beforeyouinstallorremoveanycomponent,ensurethattheATXpower
supply is switched off or the power cord is detached from the power
supply. Failure to do so may cause severe damage to the motherboard,
peripherals, and/or components.
(TIP:When lit, the onboard LED indicates that the system is in suspend or
soft-off mode, not powered OFF. See illustration below.)
CUV266
0 10 1 0 1
CUV266 Onboard LED
ON OFF
Standby
Power Powered
Off
LED

18 ASUS CUV266 User’s Manual
3. HARDWARE SETUP
3. H/W SETUP
Motherboard Settings
Motherboard Frequency Settings (DIPSwitches)
The motherboard frequency is adjusted through the DIP switches. The white block
represents the switch’s position. The illustration below shows all the switches in the
OFF position.
1) JumperFree™Mode (JEN)
This jumper allows you to enable or disable the JumperFree™mode. The
JumperFree™mode allows processor settings to be made through the BIOS
setup (see 4.4 Advanced Menu).
Setting JEN
Enable (JumperFree) [2-3] (default)
Disable (Jumper Mode) [1-2]
NOTE: In JumperFree™mode, set all DIP switches (DIP_SW) to OFF.
CUV266
0 10 1 0 1
CUV266 Jumper Mode Setting
FREQ_SEL
OFF
ON
12345
Jumper Mode Jumper Free
(Default)
12 23
JEN
CUV266 DIP Switch
CUV266
0 10 1 0 1
1. Frequency Multiple
2. Frequency Multiple
3. Frequency Multiple
4. Frequency Multiple
5. Frequency Multiple
FREQ_SEL
ON
OFF
ON
1234 5

ASUS CUV266 User’s Manual 19
3. HARDWARE SETUP
3. H/W SETUP
Motherboard Settings
External Frequency Table
Thefollowingtableisforusebyexperiencedmotherboardinstallersonly.Overclocking
can result in system instability or even shortening the life of the processor.
CPU AGP PCI Frequency Selection Switches
(MHz) (MHz) (MHz) 1 2 3 4 5
68 68 34 [ON] [ON] [ON] [ON] [ON]
103 68 34 [OFF] [ON] [ON] [ON] [ON]
170 85 42 [ON] [OFF] [ON] [ON] [ON]
136 68 34 [OFF] [OFF] [ON] [ON] [ON]
70 70 35 [ON] [ON] [OFF] [ON] [ON]
105 70 35 [OFF] [ON] [OFF] [ON] [ON]
175 87 43 [ON] [OFF] [OFF] [ON] [ON]
140 70 35 [OFF] [OFF] [OFF] [ON] [ON]
75 75 37 [ON] [ON] [ON] [OFF] [ON]
110 73 36 [OFF] [ON] [ON] [OFF] [ON]
100 90 45 [ON] [OFF] [ON] [OFF] [ON]
145 72 36 [OFF] [OFF] [ON] [OFF] [ON]
66 66 33 [ON] [ON] [OFF] [OFF] [ON]
100 67 33 [OFF] [ON] [OFF] [OFF] [ON]
185 92 46 [ON] [OFF] [OFF] [OFF] [ON]
133 66 33 [OFF] [OFF] [O FF] [O FF] [O N]
2) CPU External Frequency Selection (DIP_SW Switches 1–5)
This option tells the clock generator what frequency to send to the CPU, DRAM,
and the PCI bus. This allows the selection of the CPU’s External frequency (or
BUS Clock). The BUS Clock multiplied by the Frequency Multiple equals the
CPU’s Internal frequency (the advertised CPU speed).
CUV266 CPU External Frequency Selection
FREQ_SEL
CPU
AGP
PCI
ON
12345
ON
12345
66MHz
66MHz
33MHz
ON
12345
ON
12345
(JumperFree Mode)
133MHz
66MHz
33MHz
100MHz
67MHz
33MHz
CUV266
0 10 1 0 1
WARNING!SettheCPU frequency only to the recommendedsettings.Frequencies
other than the recommended CPU bus frequencies are not guaranteed to be stable.
Overclocking the processor is not recommended. It may result in a slower speed.

20 ASUS CUV266 User’s Manual
3. HARDWARE SETUP
CUV266
0 10 1 0 1
CUV266 ACR/USB Selection Use External USB 2&3
(Default)
ACRUSB2
ACRUSB1
Use ACR USB
23
12
3) ACR/USB Selection (ACRUSB1, ACRUSB2)
When set to pins 1-2, these jumpers allow you to activate USB port 3. Setting
the jumpers to pins 2-3 activates the Advanced Communication Riser (ACR)
slot. The default setting for both jumpers is 1-2. (NOTE: The USB port 2 is
always active regardless of the setting of these jumpers.)
IMPORTANT! Always set both jumpers accordingly when selecting a device.
3. H/W SETUP
Motherboard Settings
CUV266
0 10 1 0 1
CUV266 LAN Setting
Enable
(Default)
LAN_EN
Disable
23
12
4) LAN Setting (3-pin LAN_EN) (on LAN models only)
This jumper allows you to enable or disable the Local Area Network (LAN)
feature on the motherboard. The default setting is ENABLE.