ECS P6EX-A+ P6EX-A+ User Manual

P6EX-A+ Mainboard

User’s Manual

P6EX-A+ User’s Manual

Table Of Contents – 2

FCC & DOC ComplianceFCC & DOC Compliance

FCC & DOC Compliance

FCC & DOC ComplianceFCC & DOC Compliance

Federal Communications Commission StatementFederal Communications Commission Statement

Federal Communications Commission Statement

Federal Communications Commission StatementFederal 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 the 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 the 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.
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ning!ning!

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ning! The use of shielded cables for the connection of the monitor to the graphics

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card is required to assure compliance with FCC regulations. Changes or modifications to this
unit not expressly approved by the party responsible for compliance could void the user’s
authority to operate this equipment.

ning!ning!

Canadian DeparCanadian Depar

Canadian Depar

Canadian DeparCanadian Depar

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.

Version 1.1

Copyright © November 1998 All rights reserved

This publication may not be copied, reproduced, translated, transmitted or reduced to
any printed or electronic medium or to any machine readable form, or stored in a retrieval
system, either in whole or in part without the written consent of the copyright holders.

The contents of this publication are subject to change. The manufacturer reserves the
right to alter the contents of this publication at any time and without notice. The contents of
this publication may contain inaccuracies or typographical errors and is supplied for infor­mational use only.

Products are noted in this publication for identification purposes only. Microsoft is a
registered trademark and Windows is a trademark of Microsoft Corporation. Pentium is a
trademark of Intel Corporation. All other product names or brands may be trademarks or
registered trademarks of their respective holders.

tment of Communications Statementtment of Communications Statement

tment of Communications Statement

tment of Communications Statementtment of Communications Statement

P6EX-A+ User’s Manual

Table Of Contents – 3

1: P6EX-A+ Package & Product Information ...........1.1

Manual Features ........................................................................... 1.1

Package Contents................................................................ 1.3

Mainboard Features ............................................................ 1.4

Component Information ...................................................... 1.6

Expansion Slots ............................................................................. 1.6

Memory Sockets & Modules ........................................................ 1.7

CPU Slot & Supported CPUs ......................................................... 1.8

Port & Controller Connections ...................................................... 1.8

2: Using Your Mainboard ........................................2.1

System Controls ................................................................... 2.1

Hardware Controls & Indicators .................................................. 2.1

Keyboard Power-On ..................................................................... 2.3

CMOS Setup Utility Controls.......................................................... 2.3

Hardware Features .............................................................. 2.6

Onboard Ports ............................................................................... 2.6

Connectors .................................................................................... 2.6

Optional Hardware Connectors ................................................... 2.9

Firmware & Software........................................................... 2.10

How To Use The CMOS Setup Utility............................................. 2.10

Clearing CMOS .............................................................................. 2.10

Flashing The BIOS.......................................................................... 2.12

Bus Master Drivers ........................................................................ 2.12

3: Reconfiguring Your Mainboard ........................... 3.1

Installing Expansion Cards ................................................... 3.1

ISA Cards & Slots ........................................................................... 3.1

Configuring Expansion Card Resources In CMOS Setup............. 3.2

Adding System Memory ...................................................... 3.5

Memory Configurations ................................................................ 3.5

Installing A CPU Upgrade .................................................... 3.8

The Basic Procedure ..................................................................... 3.8

The CPU Retention Module .................................................. 3.9

P6EX-A+ User’s Manual

Table Of Contents – 4

Adding An IDE Peripheral..................................................... 3.11

IDE Transfer Modes ....................................................................... 3.11

Installing IDE Devices..................................................................... 3.13

Installing an AGP Card ......................................................... 3.14

4: P6EX-A+ Reference Information ........................ 4.1

Using This Section ................................................................ 4.1

Jumper Configuration & Connector Summary ..................... 4.3

The AGP Slot ........................................................................ 4.7

Supported CPUs................................................................... 4.7

System Memory Specifications ............................................ 4.7

Memory Configurations ................................................................ 4.7

CMOS Setup Utility Summary .............................................. 4.8

Using the CMOS Setup Utility........................................................ 4.8

Accessing The CMOS Setup Utility................................................ 4.8

Standard CMOS Setup .................................................................. 4.12

BIOS Features Setup ...................................................................... 4.16

Chipset Features Setup ................................................................. 4.21

Power Management Setup .......................................................... 4.23

PNP/PCI Configuration .................................................................. 4.29

Load BIOS Defaults........................................................................ 4.32

Load Optimum Settings ................................................................ 4.32

Integrated Peripherals .................................................................. 4.33

P6EX-A+ User’s Manual

1: Package & Product Information – 1.1

In This Section:

About This Manual
Package Contents
Mainboard Features
Component Information

1: P6EX-A+ Package & Product Information

This manual contains all the information you’ll need to use
the P6EX-A+ mainboard. Please take a moment to familiarize your­self with the design and organization of the manual.

Manual Features

This manual is divided into four sections:

• Section 1: Package & Product Information

A brief overview of what comes in the mainboard package, its

basic features, layout and component information.

• Section 2: Using Your Mainboard

Information on mainboard features that you may make use of

in operating your computer.

• Section 3: Reconfiguring Your Mainboard

How to change or upgrade the mainboard configuration.

• Section 4: Reference Information

A summary of the mainboard’s settings and specifications.

P6EX-A+ User’s Manual

1: Package & Product Information – 1.2

The manual uses some icons to call your attention to impor-

tant information. The icons appear in the sidebar and represent
the following:

G

C
D
N

• Important information

• A recommendation or good idea

• A warning or bad idea

• Danger warning

Online Manual Format

If the support disk for your mainboard is a CD-ROM disc, a

copy of the printed manual may be stored on the disc in Adobe
Acrobat format. If so, it requires Adobe Acrobat Reader version

3.0 or later to view it. Acrobat Reader for Microsoft Windows95
may also be supplied on the Support Disk. If not, you can obtain
a free copy of the Reader software from the Abobe web site which
is currently at www.adobe.com as well as other locations.

If you have the online manual, you may want to install Acro-

bat Reader on your system hard disk. You can copy the manual
over as well so that the manual is readily available without hav­ing to hunt up the Support Disk when you want to view it.

If you are unfamiliar with Acrobat Reader, please take a mo-

ment to view the Reader Online Guide which is available under
the Help menu when you run Reader.

P6EX-A+ User’s Manual

1: Package & Product Information – 1.3

Package Contents

The P6EX-A+ mainboard package contains the following items.
Please inspect the package contents and confirm that everything
is there. If anything is missing or damaged, call your vendor for
instructions before proceeding. The package includes:

• P6EX-A+ Mainboard

• Cable Pack:

– 1 Floppy cable

– 1 IDE cable

• Support Disk:

– IDE Bus Master Drivers

– Infrared Module support software

– LANDesk Client Manager ( with optional LM78 onboard)

The mainboard comes with IDE Bus Master drivers for sev­eral Operating Systems. The drivers are organized in individual
folders by OS. In each folder there is a “readme” file that explains
how to install the driver. Please locate the folder for the driver
you need and check this file.

P6EX-A+ User’s Manual

1: Package & Product Information – 1.4

Mainboard Features

This mainboard is a highly integrated ATX design that incor-

porates many features on the board. The mainboard includes the
following features:

• Slot 1 CPU slot supports Pentium II CPUs up to 333MHz

• Intel 82440EX (PAC) and 82371EB (PIIX4E) chipsets

• Super I/O chip

• NS LM78 Microprocessor System Hardware Monitor
– Optional component supports LANDesk Client Manager &

CMOS Setup Utility PC Health Monitor

• Memory module sockets:
– 3 DIMM sockets support up to 256MB of 3.3V non-buff-

ered SDRAM or EDO DRAM

• External Ports
– COM1 & COM2 serial ports, Parallel port
– PS/2 Mouse & Keyboard connectors, dual USB ports

• Expansion Card Slots
– Four PCI 2.1–compliant PCI slots
– Three 16-bit ISA slots (ISA1 shares PCI4 position)
– One AGP (Accelerated Graphics Port) slot

• Mini ATX-size circuit board
– 7.4” (18.8cm) x 12” (30.5cm)

P6EX-A+ User’s Manual

1: Package & Product Information – 1.5

J19

J18

J17

JP3

PCI 4,3,2,1ISA 3, 2, 1

Secondary IDE

J16

J14

J15

AGP Slot

Floppy

Primary IDE

COM1

CPU Slot

Parallel

COM2

DIMM1
DIMM2
DIMM3

Mouse

Keybd

USB

JP1

ATX Power

J3

J1

P6EX-A+ Layout

The illustration above shows
the connectors, sockets and
ports and the mainboard.
The COM1 and COM2 ports
are underneath the Parallel
port.

The USB ports and the PS/2
ports – Keyboard (lower) and
Mouse (upper) – are stacked
one above the other.
Please see pages 4.5 & 4.6 for
a full list of the onboard con­nectors.

P6EX-A+ User’s Manual

1: Package & Product Information – 1.6

Component Information

This section is a brief description of the components on the

mainboard that you might need to know about if you want to
upgrade or change your system configuration. If your mainboard
is already installed in a system, it isn’t necessary for you to re­view this section.

This mainboard uses the Mini-ATX ‘form factor’ in a design

that integrates many features and ports onto the board.

Expansion Slots

The mainboard has seven standard expansion slots for system

expansion or ‘add-on’ cards. Three are ISA slots, the others are
PCI slots. When you get an expansion card, it must use one of
these to connect to the computer.

The ISA expansion slots are a legacy of the original IBM PC/

AT design. They are 16-bit slots that run at a moderate bus speed.
There are many kinds of expansion cards that use this slot design
to connect to the computer, some of the most common being
sound and modem cards. ISA slot 1 shares a position with PCI
slot 4, which means you can use only one of them.

PCI slots are the current high-speed 32-bit standard for sys-

tem expansion cards. They operate at a faster speed and have a
greater data throughput than ISA cards.

NoteNote

Note: PCI1 and PCI4 share REQ0, so you can only use a Bus

NoteNote

Master PCI card in one of them. Also, PCI1 and the AGP slot
share interrupt INTA and PCI4 shares INTD with the USB con­troller. This means that the drivers for some PCI cards could cause
a conflict that might prevent a card from working. If you have a
problem with such a card in either of these slots, move it to PCI2
or PCI3 and see if the problem goes away.

Expansion cards often make use of system resources, which

requires managing the system resource configuration. Most newer
expansion cards support the ‘Plug and Play’ standard that allows
an Operating System like Windows95 to automatically detect
them and configure system resources as needed.

P6EX-A+ User’s Manual

1: Package & Product Information – 1.7

Some older ISA designs may not support this standard and
may therefore require manual configuration. You should consult
the specifications or documentation for a card to determine if
this is the case and what needs do be done to properly configure
the card.

The AGP Slot

The AGP (Accelerated Graphics Port) slot is for an AGP 3D
video display card. Unlike PCI-based display cards, the AGP tech­nology provides sufficient data throughput and speed to facili­tate fully enabled 3-Dimensional and multimedia graphics dis­play. AGP display cards using this dedicated slot are available
from a variety of vendors.

The AGP slot also requires Operating System support. Win­dows 98 directly supports AGP and other support methods may
be forthcoming. Please see Section 2 for more information.

Memory Sockets & Modules

There are three memory module sockets on the mainboard
which require 168-pin DIMM memory modules using 3.3V non­buffered memory chips. You can install any combinationof single­sided DIMM modules up to the total memory limit of 256MB
SDRAM or EDO DRAM.

Note: Double-sided DIMM LimitationNote: Double-sided DIMM Limitation

Note: Double-sided DIMM Limitation

Note: Double-sided DIMM LimitationNote: Double-sided DIMM Limitation

DIMM1 and DIMM2 have a limitation. If you install a double­sided DIMM (memory chips on both sides) in either socket, you
can not install any module in the other socket. DIMM3 is inde­pendent and does not have this limitation.

For more information about this see Adding System Memory
in Section 3.

P6EX-A+ User’s Manual

1: Package & Product Information – 1.8

CPU Slot & Supported CPUs

The Slot 1 CPU slot supports the full range of Pentium II CPUs

from Intel. The mainboard comes with a “retention module” which
mounts on the mainboard to provide guide rails and latch recep­tacles for the latches on the Pentium II. Installing a CPU in the
socket is easy. The CPU slides into the guide rails, inserts in the
slot and secures to the retention module with the attached spring­loaded latches.

If you want to install a CPU upgrade or are installing a CPU

on the board for the first time, please refer to ‘Installing a CPU’ in
Section 3: Reconfiguring Your Mainboard.

Port & Controller Connections

There are several ports and connectors on the mainboard. Some

are external ports and others are internal connectors that connect
to other parts of the computer or internal options.

External Ports

This mainboard has several external ports and connectors in-

cluding the COM1 and COM2 serial ports, a Parallel port, two
USB ports and PS/2-type keyboard and mouse ports. These ex­ternal ports are all accessible at the rear of the computer when
the mainboard is installed.

Internal Connectors

There are also several connectors built onto the mainboard,

including two connectors for up to four Enhanced IDE devices in
two channels and a connector for two floppy disk drives. There
are also connectors for a cooling fans and both modem ring-in
wake-up and LAN signal wake-up cables.

An SBLink connector provides a connection for PCI sound

cards that support this feature to maintain Creative Labs
SoundBlaster compatibilty in certain applications. See your sound
card documentation for more information.

Details about these connectors are in Section 4: Reference In-

formation.

P6EX-A+ User’s Manual

2: Using Your Mainboard – 2.1

In This Section:

System Controls
Hardware Features
The Retention Module
Firmware & Software

2: Using Your Mainboard

This section covers the system control features and status in­dicators that connect to the mainboard, some of the hardware
features and provides an overview of the software that comes
with or is built-into the mainboard.

System Controls

There are two topics in this section, a explanation of the hard­ware controls and status indicators that connect from the main­board to your system case and some information about the parts
of the CMOS Setup Utility that allow you customize some sys­tem features.

Hardware Controls & Indicators

There are some control features and status indicators that con­nect from the mainboard to your system case, which is some­times called the ‘Enclosure’ or ‘Chassis.’ These are:

• Power Switch

• Power Status Indicator

• Suspend Switch

• Suspend Status Indicator

• Reset Switch

• Hard Disk Drive Activity Indicator

• Keyboard Lock

All of these case features connect to the mainboard via con­nector J16. Not all system cases have all of these features, so
your system may not have all of them. The functions and op­tions for these are shown in the table on the next page.

P6EX-A+ User’s Manual

2: Using Your Mainboard – 2.2

Hardware Control & Indicator Connectors

Feature Function

Power Status LED
When lighted indicates that system is turned on

Suspend Switch
Puts the system into Suspend state under Operating Systems that support
this power management feature

Suspend LED
When flashing indicates the system is suspended

Reset Switch
Pressing the Reset switch restarts the system

Keyboard Lock
Disables keyboard via a lock mounted on front panel of the case

Speaker
Connects to the PC speaker mounted on the system case

HDD Activity LED
Flashes when hard disk drive is active

Power Switch
Turns the system power on and off. Default sets this to dual function as
power and suspend switch. Press once for Suspend, hold for >4 seconds
for Off. To set as Power only, change setting in the Power Management
section of the CMOS Setup utility.

P6EX-A+ User’s Manual

2: Using Your Mainboard – 2.3

Keyboard Power-On

This mainboard supports turning on the system by using a
key command. You can turn on the system by pressing Ctrl+F12
(press both keys at the same time.)

Jumper JP1 controls this feature on the mainboard. The de­fault setting is Enabled. Some keyboards and power supplies may
not correctly support this feature. Please see page 4.4 for details.

CMOS Setup Utility Controls

Two sections of the CMOS Setup Utility allow you to config­ure how some of your system’s features work. These are:

• BIOS Features Setup

• Power Management Setup

The CMOS Setup Utility is a program that is permanently
stored in the BIOS chip on the mainboard. The utility creates a
system hardware configuration record that it stores in a small
amount of battery-supported memory on the board. The BIOS
uses this record to function as an interface between the system
hardware and the operating system. Most of the settings in the
CMOS Setup Utility are made automatically, so you won’t nor­mally need to use this program. You can, however, customize
some of the operational features to suit how you prefer to use
the system.

The screen illustrations on the next two pages show the Setup
Default settings for these two sections of the utility.

The CMOS Setup Utility Summary in Section 4: Reference
Information, lists the setting options for each section of the util­ity including the two noted above.

P6EX-A+ User’s Manual

2: Using Your Mainboard – 2.4

CMOS Setup Utility –

BIOS Features Setup
This section of the setup utility
allows you to configure some
system features including Vi­rus Warning, Boot Sequence
and Security Option.

Virus Warning –
When enabled, monitors the
primary hard disk boot sec­tor and warns of any attempt
to write to it.
Boot Sequence –
Controls the order in which
the system checks disk drives
for a boot disk.
Security Option –
Sets the level of password
protection for the system for
both the Supervisor and User
passwords.

P6EX-A+ User’s Manual

2: Using Your Mainboard – 2.5

CMOS Setup Utility –

Power Management Setup
This section of the setup utility
allows you to configure the
power management features
supported by the BIOS. These
can also operate in tandem
with Operating System power
management features.

You can use the Min Saving or
Max Saving default modes or
you can configure the power
management features indi­vidually in the User Define
mode.

P6EX-A+ User’s Manual

2: Using Your Mainboard – 2.6

Hardware Features

This section is a brief overview of information about the

mainboard’s hardware features.

Onboard Ports

There are several external ports on the mainboard. These are

ports standard to most personal computers:

• COM1 Serial Port
A high-speed serial port which can also be configured as the

COM3 port in the CMOS Setup Utility.

• COM2 Serial Port (on supplied Port Bracket)
A high-speed serial port which can also be configured as the

COM4 port in the CMOS Setup Utility.

• Parallel Port
The parallel port can be configured as a Standard, ECP or EPP

parallel port in the CMOS Setup Utility

• PS/2 Keyboard Port (lower) & PS/2 Mouse Port (upper)

• USB ports – two ports (stacked)

Connectors

There are several connectors on the mainboard for connecting

additional ports and internal peripheral devices

• IDE 1 – Primary IDE Channel
Connector for the Primary Master and Slave IDE devices.

• IDE 2 – Secondary IDE Channel
Connector for the Secondary Master and Slave IDE devices.

• Floppy Connector
Connector for two floppy disk drives.

P6EX-A+ User’s Manual

2: Using Your Mainboard – 2.7

CMOS Setup Utility –

Integrated Peripherals
This section of the setup utility
configures the IDE and Floppy
controllers and the settings for
the external ports

This section enables and con­figures the optional USB and
Infrared features.
The screen illustration shows
the settings when Optimum
Settings are loaded.

P6EX-A+ User’s Manual

2: Using Your Mainboard – 2.8

Cooling Fan Connectors

There are three cooling fan power connectors on the main-

board. One is for the CPU cooling fan (J3), one for a power sup­ply fan (J1) and one for a case-mounted or “chassis” cooling fan
(J19). When the system enters Suspend mode, the CPU cooling
fan and power supply fan will shut off. The case fan is not turned
off in order to maintain air circulation inside the case.

Modem Wake-Up

The J18 connector on the mainboard is for connecting a signal

cable from a modem that supports a modem ring system wake­up feature. With such a modem installed and connected to the
mainboard via this connector, the system will wake up from Sus­pend mode when an incoming call is received by the modem.

The ‘Ring-In Event’ line in the CMOS Setup utility’s Power

Management Setup section must be set to Enabled for this fea­ture to function.

LAN Wake-Up

The J17 connector on the mainboard is for connecting a signal

cable from a LAN card that supports a LAN wake-up feature.
When a LAN card that supports this is installed and connected to
the mainboard via this connector, the system will wake up from
Suspend mode when the system is accessed via the LAN.

ATX Power Supply

With an ATX power supply, the system will turn the power

off automatically when exiting Windows95.

UltraDMA Hard Disk Drive Support

This mainboard supports hard disks that use UltraDMA data

transfer. You attach an UltraDMA drive to one of the IDE cables.
If you use the Optimum Settings feature in the CMOS Setup
utility the system will automatically detect the drive and config­ure the system to use it.

P6EX-A+ User’s Manual

2: Using Your Mainboard – 2.9

CMOS Support Battery

The disk shaped battery on the mainboard is a 3-volt Lithium
cell battery that supports the small amount of onboard memory
where the CMOS Setup utility’s configuration record is stored.
The battery will last for a number of years and can conceivably
outlast the usage period of the computer it is in.

If the battery fails, the system will not retain the CMOS Setup
configuration and the system will need to be reconfigured every
time you turn it on. If this happens, replace the battery with the
same type as is installed. You can get a replacement at many
electronics supply stores, computer stores and other places that
sell a variety of batteries for various uses.

Optional Hardware Connectors

There are additional feature connectors on the mainboard for
optional ports. These require optional external port hardware.

IR Ports

There is one standard and one optional connector on the main­board which support an IR (infrared) port module that enables
wireless communication between the computer and other com­puters and devices with an infrared port. The default IR connec­tor, J15, is for IrDA or ASKIR infrared modules and the optional
JP4 connector is for Fast IR.

The infrared port module is an optional component. If it is
installed, you must set the UART Mode Select line in the Inte­grated Peripherals section of the CMOS Setup Utility to the IR
mode used by the module.

Support software and documentation for the IR port is on the
Support Disk that comes with the mainboard.

P6EX-A+ User’s Manual

2: Using Your Mainboard – 2.10

Firmware & Software

The mainboard hardware is supported by both firmware and

software components. Firmware is software that is stored on a
chip on the board rather than on disk media.

The firmware component you interface with on this main-

board is the CMOS Setup Utility. This utility establishes various
settings used by the BIOS, the basic software that is an interface
between the system hardware and software.

The software component is comprised of software drivers that

support the PCI IDE controller and some of the other hardware
features.

How To Use The CMOS Setup Utility

The CMOS Setup Utility options are listed in detail in Section

4: Reference Information. This section is just a brief explanation
of how to run the program to adjust settings as noted in this and
the next section.

To run the CMOS Setup Utility, press the Del or Delete key

while the computer is starting up, before the operating starts to
load. The utility’s main screen will appear as shown on the next
page. To navigate the program, use the controls shown on the
screen. The utility has several sections. Many of the features con­figured by the utility are set to operate automatically when the
‘Setup Defaults’, the recommended mode, are used. With Setup
Defaults loaded you can still customize various settings.

Clearing CMOS

Under some unusual circumstances the configuration record

created by the CMOS Setup utility and stored on the mainboard
can become corrupted and unusable, possibly leading to the board
being unable to operate properly. If this happens, the CMOS
record can be cleared by setting jumper JP3 to the clear setting for
a moment and then setting it back to the Normal setting. Refer to
Section 4 for more information.

P6EX-A+ User’s Manual

2: Using Your Mainboard – 2.11

CMOS Setup Utility –

This is the main screen for the
setup utility from which you
access its various sections.
The function and use of each
section is covered in Section
4: Reference Information.

P6EX-A+ User’s Manual

2: Using Your Mainboard – 2.12

Flashing The BIOS

This mainboard uses the Award BIOS. The BIOS is stored on

a programmable flash memory chip on the mainboard. Updates
to the BIOS can be installed by installing a new BIOS file on the
flash chip, which replaces the existing one. You do this using
software that comes on the Support Disk. There is an explana­tion of how to install a BIOS update in a ‘readme’ text file in­cluded with the program.

Bus Master Drivers

This mainboard comes with software drivers, for various Op-

erating Systems, that enable the PCI controller to operate in ‘Bus
Master’ mode. The drivers are on the Support Disk. The included
‘readme’ file has information on the drivers and installation in­formation.

P6EX-A+ User’s Manual

3: Reconfiguring Your Mainboard – 3.1

In This Section:

Installing Expansion Cards
Adding System Memory
Installing A CPU Upgrade
Adding An IDE Peripheral
Installing An AGP Card

3: Reconfiguring Your Mainboard

This section explains how to install new hardware on your
mainboard. It covers installing expansion cards, adding system
memory, changing the CPU and installing additional IDE periph­eral devices such as a hard disk or a CD-ROM drive.

Installing Expansion Cards

There are six standard expansion card slots on the mainboard,
three ISA slots and three PCI slots. When you get an expansion
card, it will come with instructions on how to install it, so this
section covers relevant information from the mainboard side only.

ISA Cards & Slots

ISA expansion cards often use system resources in the form of
IRQs and DMA channels. Newer cards that comply with the
Plug and Play (PnP) standard are designed to allow the Operating
System to automatically configure system resources. Cards that
do not support PnP may require manual configuration of both
the card hardware and settings in the CMOS Setup Utility.

If you have a PnP-compliant card to install there should be
little to do other than follow the installation instructions. If, how­ever, you have a non-PnP card and it requires configuring system
resources, you may need to review the third part of this section,
Configuring Expansion Card Resources In CMOS Setup.

P6EX-A+ User’s Manual

3: Reconfiguring Your Mainboard – 3.2

PCI Cards & Slots

With very few exceptions, any PCI expansion card you are
likely to get will be Plug an Play compliant. If you are using an
Operating System that supports PnP, such as Windows 95, you
should be able to follow the installation instructions that come
with the card and have the Operating System automatically rec­ognize and configure the card.

The PCI slots on the mainboard all have ‘Bus Master’ capabil­ity. For installed PCI cards to use this feature an Operating Sys­tem-specific Bus Master software driver that comes with this main­board must be installed under your Operating System. These
drivers are located on the Support Disk.

The AGP Slot

This mainboard has one other expansion slot, the AGP or Ac­celerated Graphics Port slot.

The AGP slot is a special high-speed slot for a display card
that uses the AGP interface. Most display cards currently use the
PCI bus to connect to the system. The AGP design maximizes
the performance of the display card, especially for 3D operations,
by providing a high-speed interface and access to system memory
for 3D rendering. AGP offers a substantial performance enhance­ment when compared to an equivalent display card with a PCI
interface.

You set the amount of system memory available to the AGP
card in the CMOS Setup Utility’s ChipSet Features Setup section
under AGP Aperture Size.

Configuring Expansion Card Resources In CMOS Setup

The CMOS Setup Utility, which is covered in detail in Section
4: Reference Information, has a section called PNP/PCI Configu­ration. The default settings in this section allow the Operating
System to automatically configure IRQ resources for PnP com­pliant ISA and PCI Cards.

If you need to install a non-PnP card, you will need to config­ure any IRQ and DMA settings manually, both on the card and
in the CMOS Setup Utility. The following three pages show how
to do this.

P6EX-A+ User’s Manual

3: Reconfiguring Your Mainboard – 3.3

CMOS Setup Utility –

PnP/PCI Configuration
This is the default screen for
this section when Setup De­faults are loaded. If you need
to manually configure the IRQ
settings, set the first item on
the screen to the ‘Manual’
setting. See the next page.

If you install an Operating Sys­tem that supports Plug and
Play, such as Windows95,
you should set the first line,
‘PNP OS Installed’ to ‘Yes’.

Running CMOS Setup

To run the CMOS Setup utility,
press the Delete or the Del
key while your computer is
first starting up. Select the
‘PNP/PCI CONFIGURATION’
item on the main screen and
press the Enter key to open it.

When you are finished, press
the Esc key once to return to
the main screen and then se­lect ‘SAVE & EXIT SETUP’ and
press the Enter key to save the
new configuration. For more
information on this see Sec­tion 4: Reference Information.

P6EX-A+ User’s Manual

3: Reconfiguring Your Mainboard – 3.4

CMOS Setup Utility –

PnP/PCI Configuration
When ‘Resources Controlled
By’ is set to ‘Manual’ you can
individually configure the IRQ
& DMA channel settings. The
individual defaults are for PnP
cards and will still use all the
items listed to automatically
assign resources as needed.
If you are installing a ‘legacy’
ISA card that requires manual
configuration, you can manu­ally assign the required re­sources as needed.

Legacy cards, by definition,
are not PnP compliant and
must be manually configured
if they require an IRQ or DMA
channel. See the expansion
card manual for specifics.
When an item in the list is con­figured this way, it is no longer
part of the pool of automati­cally configurable resources.
For this reason, don’t config­ure ISA cards this way unless
necessary.

P6EX-A+ User’s Manual

3: Reconfiguring Your Mainboard – 3.5

Adding System Memory

There are some requirements you must follow if you want to
install system memory. The memory subsystem has three 168­pin DIMM sockets. This mainboard supports both EDO DRAM
and SDRAM (Synchronous DRAM) modules. You can use mod­ule sizes from 16MB to 128MB, either single or double-sided.
The total supported memory capacity for this mainboard is
256MB.

Note: Double-sided DIMM LimitationNote: Double-sided DIMM Limitation

Note: Double-sided DIMM Limitation

Note: Double-sided DIMM LimitationNote: Double-sided DIMM Limitation

DIMM1 and DIMM2 have a limitation. If you install a double­sided DIMM (memory chips on both sides) in either socket, you
can not install any module in the other socket. DIMM3 is inde­pendent and does not have this limitation.

If your mainboard is already installed in a system, it will have
some amount of memory installed on the board. You can tell
how much by checking the configuration screen that appears
when the computer is starting up. With some memory installed,
there may be some sockets available to add additional memory.

Memory Configurations

You can install any combination of module sizes as long as
you follow these requirements:

• All modules must use unbuffered 3.3–Volt RAM

• All modules should have the same operating speed, e.g. 60ns

(nanoseconds) EDO or 100MHz SDRAM

• If you install a double-sided DIMM in DIMM1 or DIMM2

the other socket must be empty. DIMM3 is independent.

• Maximum memory installation of 256MB

Other than these requirements, there is no limitation on the
variety of combinations, so they are not listed here. We recom­mend using one type of DRAM, either EDO or Synchronous.
SDRAM is considerably faster than EDO.

P6EX-A+ User’s Manual

3: Reconfiguring Your Mainboard – 3.6

Retaining Clamp

DIMM Sockets

The picture above shows the
memory module sockets in
detail. The sockets are num­bered DIMM1 and DIMM2
starting from the upper socket
in the picture.

DIMM1
DIMM2
DIMM3

Modules press into place
and are held in position by a
retaining clamp at each end
of the socket.
When you want to remove a
module, press down on the
retaining clamps to push the
module out of the socket.

P6EX-A+ User’s Manual

3: Reconfiguring Your Mainboard – 3.7

Installing Memory Modules

To install a DIMM module, look at the module and note the
position of the shorter section of the connector edge that plugs
into the DIMM socket. Note the position of the shorter section
of the socket. Orient the module so that these match and press
the module into the socket at a 90° angle. The retaining clamps at
each end of the socket will rotate upwards automatically to se­cure the module in place.

Modules are designed so that they will only insert in one ori­entation. If you have trouble inserting the connector edge of the
module into the socket, it may be oriented the wrong way. Turn
the module around and try again. You shouldn’t need to force it.

If All Sockets Are Occupied

If you want to install more memory and there are no sockets
available, you must remove an installed module and replace it
with an upgrade module.

If you have to do this, make sure to identify what type of
memory is already installed. In some cases, there may be a mix
of module types. You can tell this by checking the configuration
screen that appears while the computer is starting up. Press the
Pause key to temporarily interrupt the start-up process while the
screen is visible so that you have more time to read it. When
you’re done press any key to resume.

Remove the lowest performance and smallest size modules
and replace them with the upgrade.

G

SDRAM is considerably faster
than EDO DRAM. If you are
installing more memory with
some EDO already installed,
consider installing SDRAM. If
the memory already installed
is SDRAM, installing EDO
modules will hamper system
performance.

P6EX-A+ User’s Manual

3: Reconfiguring Your Mainboard – 3.8

Installing A CPU Upgrade

If you are installing this mainboard it will not have a CPU

installed unless your vendor installed one when you purchased
the board. If the mainboard is installed in a system, there will
already be a CPU installed. In either case the information and
procedure for installing a CPU is the same. Since the more likely
scenario is that you are installing an upgrade, this section assumes
that is what you are doing. If you need to install the CPU Reten­tion Module, please see the section below.

The Basic Procedure

To install a Pentium II upgrade you need to do the following:

1. Install the CPU chip
Follow the installation instructions that come with the Intel

CPU. The CPU will only insert in the Slot 1 CPU socket one
way. Slide the CPU into the guide rails of the Retention Mod­ule and press the CPU into the slot until the retaining latches
snap into place in the Retention Module guide rails.

2. Connect the CPU cooling fan power lead
Connect the CPU cooling fan power lead to the J3 fan power

connector on the mainboard.

3. Check the CPU clock setting in CMOS Setup
Run the CMOS Setup Utility (see Section 4) and open the

BIOS Features Setup section. The default setting is to auto­detect the speed of the Pentium II. Check to see that the CPU
Internal Core Speed setting matches the rated speed of the
Pentium II installed.

If for some reason you want to change this speed setting manu­ally, set this line to Manual and set the CPU Bus Frequency
and Bus Frequency Multiple lines that appear to the settings
you require. Doing this is not recommended.

The internal clock speed is the speed the CPU operates at to

process data and is the one used by Intel to indicate the speed of
the chip, for example, a 266MHz PentiumII. The CPU also has
an external bus clock speed, or frequency, which is the speed at
which it interacts with external components. The default exter­nal bus clock for this mainboard is 66MHz

P6EX-A+ User’s Manual

3: Reconfiguring Your Mainboard – 3.9

The CPU Retention Module

The Pentium II CPU requires a mounting frame that attaches
to the mainboard to guide the CPU during installation and secure
it to the mainboard. This frame is called the “retention module”
and is supplied with the mainboard. If you received this main­board installed in a system, the retention module will already be
installed. If you purchased the mainboard to install yourself, you
will need to install the retention module on the mainboard be­fore you install the board in a system case.

The module package has two parts, the Retention Module
and a CPU heat sink support. The module is simple to install and
does not require tools. To install the module do as follows:

1. Take precautions against static electric discharge before you

start. It is best to have an anti-static surface to place the main-

board on while you work on it and also an anti-static wrist

strap. If you don’t have an anti-static surface to work on, place

the board on the anti-static bag it comes in. If you don’t have

a wrist-strap (inexpensive and available at electronics stores),

try to touch something metal, perhaps the system case, before

you touch the mainboard.

2. The module slides over the Slot 1 CPU slot. You have to ori-

ent it correctly for it to sit flat on the mainboard. Look at the

left end of the slot (as in the mainboard illustration in Section

1). There is an orientation foot on the slot that slides into the

orientation notch on the retention module. Look at the mod-

ule and find the notch. Orient the module to the CPU slot.

3. Slide the retention module over the CPU slot. If you have it

oriented correctly it will slide on easily and sit flat on the board.

The mounting pins at the module corners should fit over the

mounting holes in the mainboard.

P6EX-A+ User’s Manual

3: Reconfiguring Your Mainboard – 3.10

4. The four mounting pins insert in the mounting holes in the
mainboard. The holes are at the four corners of the Slot 1
CPU slot. Press the four mounting pins on the bracket through
the holes in the mainboard so that they snap in place. You will
need to push a little to seat them.

5. Attach the heat sink support to the mainboard. Line up the
support’s mounting pins with the mounting holes in the
mainboard and press them into the holes so that they snap in
place.

There are receptacles at the top of the Retention Module guide

rails that the mounting latches on the Pentium II fit into. When
you install a CPU the latches should snap into the receptacles.
Follow the Intel instructions that come with the Pentium II to
install the CPU properly.

P6EX-A+ User’s Manual

3: Reconfiguring Your Mainboard – 3.11

Adding An IDE Peripheral

This section covers some aspects of installing internal IDE pe­ripheral devices as they relate to the mainboard. The onboard
Enhanced IDE controller supports up to four devices, two per
IDE channel. The primary hard disk drive in most systems is an
IDE device. You may want to install more hard disks, a CD-ROM
drive or combination of these and other devices. This mainboard
supports both PIO and UltraDMA modes, which it can detect
automatically. You can install a mix of devices. With the Setup
Defaults loaded in the CMOS Setup utility, the system will auto­matically detect and configure multiple devices of whatever mode.

IDE Transfer Modes

Hard disk read and write operations are executed via the main­board chipset. The transfer of data between the hard disk and the
system takes place using one of a number of transfer modes –
either one of several PIO modes or UltraDMA mode.

Although there are several PIO Modes (0 through 4), and this
mainboard supports all of them, most current hard disk and CD­ROM drives use either Mode 3 or 4. The greater the mode num­ber, the faster the transfer rate, so you should use the fastest mode
the device can operate at. With Optimum Settings loaded in the
CMOS Setup Utility, the system will automatically detect the
fastest mode a device can use and set it for that mode.

UltraDMA is another transfer method that provides even faster
data transfer than PIO modes. To use it you must install a drive
that uses this transfer method. Drives that use PIO Mode transfer
can not use the UltraDMA setting.

The settings for drive modes are in the Integrated Peripherals
section of the CMOS Setup utility. The screen illustration at right
shows the Setup Defaults settings.

P6EX-A+ User’s Manual

3: Reconfiguring Your Mainboard – 3.12

CMOS Setup Utility –

Integrated Peripherals
The illustration above shows
the Setup Defaults settings for
this screen. You can install IDE
devices under these settings
and the system will automati­cally detect and set the best
mode for each device.

You can also set the transfer
mode for each device manu­ally, although we recom­mend using the default set­tings unless you have a rea­son not to and you know what
you are doing.

P6EX-A+ User’s Manual

3: Reconfiguring Your Mainboard – 3.13

Installing IDE Devices

The mainboard’s Enhanced IDE controller supports four de­vices in two channels, IDE1 and IDE2. These are called the Pri­mary and Secondary IDE channels.

Each channel supports two devices, the first device is called
the Master device and the second the Slave device. You must
configure any IDE device you install to operate as one or the
other. To find out how to configure the device you plan to install
you should refer to the manual that comes with the device. You
may need to set jumpers or switches to configure it.

IDE Cables

The mainboard comes with one IDE ribbon cable to connect
two devices to the mainboard. If you need to install devices on
the second channel you will need to get another IDE cable. These
are a standard and inexpensive item that you can generally find
at any computer supply store. One edge of the cable is colored to
indicate the Pin 1 side. When you connect the cable to the main­board and a device you must orient the cable so that this colored
edge is at the Pin 1 side of the connector you are attaching it to.

The mainboard IDE connectors have an orientation cut-out to
ensure correct orientation, and the supplied cable has an orienta­tion tab on the side of the connector. Some IDE cables do not
have this tab and therefore are not forced to use the correct orien­tation. You should check that any cable you buy has orientation
tabs on the side of the connectors. If you get a cable that does not
have them, make sure the cable is correctly oriented when you
attach it to the board and the device.

IDE cables have three connectors on them, one at each end
and one in-between, closer to one of the ends. When you install
a device on the second channel, attach the lone end to the IDE2
connector on the mainboard. The two connectors that are closer
to each other are for connecting to IDE devices. The connector
on the end is for the Master device and the connector in the middle
is for the Slave device.

P6EX-A+ User’s Manual

3: Reconfiguring Your Mainboard – 3.14

IDE Devices & CMOS Setup

When you install a new hard disk drive its parameters will be

automatically detected by the BIOS and entered in the Standard
CMOS Setup section of the CMOS Setup utility if you use the
Optimum Settings, which automatically detect any new hard disk
drive. All other devices do not use drive parameters and will not
show up in the device list on this page.

Installing an AGP Card

An AGP display card installs in the AGP slot on the main-

board and secures to the system case at the matching expansion
slot opening. Any AGP card will require Operating System sup­port, which will be implemented in Windows 98 and later ver­sions of Microsoft Windows.

Review the card documentation for any additional installa-

tion instructions.

P6EX-A+ User’s Manual

4: Reference Information – 4.1

In This Section:

Jumper Summary
Connector Summary
CPU Information
Memory Configurations
CMOS Setup Utility

4: P6EX-A+ Reference Information

This section is a summary of the P6EX-A+’s specifications and
settings.

Using This Section

The information in the first part of this section is presented in
a summary format to make it easy to find specific information. If
you need to see additional explanation, please refer to the related
topics earlier in the manual. The second part of this section is a
detailed explanation of the CMOS Setup Utility.

P6EX-A+ User’s Manual

4: Reference Information – 4.2

ISA 3, 2, 1

J18

J19

PCI 4,3,2,1

AGP Slot

J14

JP3

J17

Secondary IDE

J16

Jumper & Connectors

The illustration above shows
the location of the jumpers,
ports and other connectors
on the mainboard.

J15

Parallel

COM1

COM2

CPU Slot

ATX Power

DIMM1
DIMM2

Floppy

DIMM3

Primary IDE

The COM1 and COM2 ports
are underneath the Parallel
port. The USB ports and the
PS/2 ports – Keyboard (lower)
and Mouse (upper) – are
stacked vertically.

Mouse

Keybd

USB

JP1

J3

J1

P6EX-A+ User’s Manual

4: Reference Information – 4.3

Jumper Configuration & Connector Summary

This section lists the jumper setting options for this mainboard
and the onboard connectors. The settings are listed as follows:

• The two pins shorted by a jumper cap on a three-or-more-pin

jumper, e.g. 1-2

or

• For a two-pin jumper, On, if the cap is in place, and Off, if a

cap is not in place.

In the jumper illustrations, the Pin 1 position is shaded and
the jumpers, shown in a “bird’s eye” view, look like this:

A jumper with a cap in position looks like this:

The default settings are noted in the summary table.

C

In practice, for an Off setting
on a two-pin jumper, place
the cap over one pin so that it
doesn’t get lost.

P6EX-A+ User’s Manual

4: Reference Information – 4.4

Jumper Settings

Function Jumper Settings

Keyboard JP1 Enable 1-2 [D]
Power-On Disable 2-3
Note: The Keyboard Power-On feature may not work properly if the
system keyboard or power supply are not within the required specifica­tions for this feature. This is a problem caused by such components, not
the mainboard. If Keyboard Power-On doesn’t work, set this jumper to the
Disable setting. The Keyboard Power-On command is Ctrl + F12

Clear CMOS JP3 Clear 1-2*

Normal 2-3 [D]
* With system turned off, put cap in the clear position for a moment to
clear current settings and then return it to the Normal position

Note:
[D] = Default setting

1. Clock Settings:
CPU External Clock speed and Internal Clock factor are set in the CMOS
Setup Utility BIOS Features Setup section, not by jumpers.

2. CPU Status Detection:
The system automatically detects the CPU status at start-up and will
display a message on-screen if the CPU has been removed or changed
since the last shut-down.

JP1: Keyboard & Mouse Voltage Selector

Enable

JP3: Clear CMOS

Clear

Disable

Normal

P6EX-A+ User’s Manual

4: Reference Information – 4.5

Onboard Connectors

Name: Function Description

J1: PS Fan power For ATX power supply cooling fan power cable
J2: Keyboard/Mouse Stacked PS/2 ports, keyboard lower, mouse upper
J3: CPU Fan power For CPU cooling fan power cable
J4: USB Dual stacked external USB ports
J5: Serial Port Two 9-pin serial port is COM2, can be set to COM4
J6: FIR header Optional Fast IR connector for FIR module
J7: Parallel Port Standard 25-pin parallel Printer port
J8: Serial Port One 9-pin serial port is COM1, can be set to COM3
J9: Floppy Drive 34-pin connector connects to 2-device cable;

End device is Drive A:, middle is Drive B:

J10: Secondary IDE 40-pin connector connects to 2-device cable;

End device is Secondary Master, middle is Slave

J11: Primary IDE 40-pin connector connects to supplied IDE cable;

End device is Primary Master, middle is Slave
J12: SLOT 1 Pentium II CPU slot
J13: AGP Slot Accelerated Graphics Port slot
J14: SBLink Connnector for SoundBlaster DOS compatibility
J15: Intel IR header Connects to optional IrDA or ASKIR infrared module
J16: Case Features Connects to case features:

Pins 1-3: Power On LED; 4-5: Suspend Switch; 6-8: Suspend LED; 9-10:
Reset Switch; 11-12: Keyboard Lock; 13-16: Speaker; 17-18 HD LED; 19-20
Power On switch

P6EX-A+ User’s Manual

4: Reference Information – 4.6

Name: Function Description

J17: LAN Wake-up LAN activity wake-up header
J18: Modem Wake-up Connects to internal modem for system wake-up

on modem ring

J19: Case Fan power For case-mounted cooling fan power cable

J16: Case Features Connector

1 – 3 4 – 5 6 – 8 9 – 10 11 – 12 13 – 16 17 – 18 19 – 20

Pin 1-3: Power On LED; Pin 4-5: Suspend Switch; Pin 6-8: Suspend LED; Pin
9-10: Reset Switch; Pin 11-12: Keyboard Lock; Pin 13-16: Speaker; Pin 17-18:
Hard Disk LED; Pin 19-20: Power Switch

J16 Pin Assignments

Power LED
1 +
2 +
3 ­Suspend
4 I
5 G
Suspend LED
6 +
7 +
8 ­Reset
9 I
10 G

Keyboard Lock
11 I
12 G
Speaker
13 P
14 G
15 G
16 O
HDD LED
17 +
18 ­Power On
19 I
20 G

P6EX-A+ User’s Manual

4: Reference Information – 4.7

The AGP Slot

The AGP (Accelerated Graphics Port) slot is for an AGP dis­play card. With the Optimum Settings loaded in the BIOS Setup
Utility the AGP has a default memory aperture of 64MB which
can be set from 4MB to 256MB.

Supported CPUs

This mainboard supports Intel Pentium II and Celeron CPUs
running at 233MHz, 266MHz, 300MHz and 333MHz with a
66MHz external bus clock. Additional external clock speeds are
available through the Manual setting option in the BIOS Features
Setup section of the CMOS Setup Utility.

The CPU Retention Module

This mainboard ships with a CPU retention module which
attaches to the mainboard to provide guide rails and latch recep­tacles to hold the installed CPU in place. Please see Section 2,
The CPU Retention Module, if you need more information on
how to install and use the module.

System Memory Specifications

The memory subsystem on this mainboard has two 168-pin
DIMM sockets. The sockets can use either EDO DRAM or
SDRAM unbuffered 3.3–Volt modules. Single or double-sided
modules from 16MB to 128MB are supported up to a total
memory capacity of 256MB.

Memory Configurations

You can install any combination of module sizes as long as
you follow these requirements:

• All modules must use unbuffered 3.3–Volt RAM

• All modules should have the same operating speed, e.g. 60ns

(nanoseconds) EDO or 100MHz SDRAM

• If you install a double-sided DIMM in DIMM1 or DIMM2

the other socket must be empty. DIMM3 is independent.

Other than these requirements, there is no limitation on the
variety of combinations, so they are not listed here. We recom­mend using one type of DRAM. SDRAM is faster than EDO.

P6EX-A+ User’s Manual

4: Reference Information – 4.8

CMOS Setup Utility Summary

This section explains the entries in the CMOS Setup Utility

program. This utility is permanently stored on the BIOS chip on
the mainboard. It creates a record of the mainboard’s and some
system configuration information and stores it in battery-sup­ported memory on the mainboard. This record must be intact
and accurate in order for the mainboard to operate.

After a brief explanation of how to operate the utility there is

a summary of the entries and options for all sections of the util­ity. Under normal conditions, once your system is set up, you
should have little or no need to use this utility.

Using the CMOS Setup Utility

This mainboard uses the Award system BIOS. It is stored in a

Flash ROM memory chip on the mainboard. The BIOS uses a
software program, also stored on the same chip to create a sys­tem configuration record which is saved in a small amount of
special “CMOS” memory on the mainboard.

Accessing The CMOS Setup Utility

When you turn on your computer, a message appears on the

screen indicating you can run the Setup program by pressing the
Del key (it’s on the keypad.) The message appears after the POST
(Power On Self Test).

If you want to run Setup but you don’t respond in time before

the message disappears, you can reset the system by pressing the
Ctrl + Alt + Delete keys at the same time, or by pushing the
system Reset button. The message will then reappear.

After you press the Del or Delete key the program menu screen

will appear, displaying the Setup utility section names and some
command instructions.

P6EX-A+ User’s Manual

4: Reference Information – 4.9

P6EX-A+ User’s Manual

4: Reference Information – 4.10

Menu Commands

If you look at the lower portion of the screen illustration you’ll

see a section that lists the control commands for this level of the
program. You execute a command by pressing the key for that
command. The program commands are :

Quit

This command will close the Setup program when you press
the ESC key.

Save & Exit Setup

This will save the current settings and close the Setup pro­gram when you press the F10 key.

Select Item

You can use the arrow keys on your keyboard to move around
the screen and select a menu item. An item is highlighted when
it is selected.

Change Color

Change the program color scheme by pressing Shift + F2.
The section at the bottom of the screen displays a brief expla-

nation of a highlighted menu item’s function.

There are six main sections to the Setup program:

• Standard CMOS Setup
Date, time, disk drive, video display and error handling

• BIOS Features Setup
System customization features and video display settings

• Chipset Features Setup
Chipset settings, memory configuration feature for special-

ized add-on cards and VGA memory configuration

• Power Management Setup
Sets up the “green” power management features

• PNP/PCI Configuration
PCI expansion slot and system resource settings

P6EX-A+ User’s Manual

4: Reference Information – 4.11

• Load BIOS Defaults

Loads minimum settings from the BIOS ROM.

• Load Optimum Settings

Loads optimized settings from the BIOS ROM.

• Integrated Peripherals

Settings for the IDE channels and onboard ports

• PC Health Monitor (when optional LM78 installed on board)

Monitoring sensor settings and readings, accessed by LANDesk
Client Manager. Present when optional monitoring hardware
is installed on mainboard. LANDesk Client Manager software
is included on the Support Disk with this option.

The other main menu items are affected by these items :

• Supervisor Password & User Password

Sets a system password which is configured by the Security
Option item in BIOS Features Setup.

• IDE HDD Auto Detection

Automatically detects the drive parameters of any installed
IDE hard disk drives and enters them automatically in the Stan­dard CMOS Setup .

• Save & Exit Setup

Saves the current settings and exits the program.

• Exit Without Saving

Discards any changes made during the current session and
exits the program.

To enter a section of the Setup program, highlight the menu

item and press the Enter key.

P6EX-A+ User’s Manual

4: Reference Information – 4.12

Standard CMOS Setup

To enter this section, highlight this menu item in the main

menu and press the Enter key. The screen above will appear. This
sample screen shows a common setup. For technical reasons the
memory figures are not what you will normally see. The system’s
installed memory is normally detected and displayed.

Menu Commands

If you look at the lower portion of the screen illustration you’ll

see a section that lists the control commands for this level of the
program. You execute a command by pressing the key for that
command. The program commands are :

Quit
This command will close the Setup program when you press

the ESC key.
Help
This displays information about the highlighted item when

you press the F1 key.

P6EX-A+ User’s Manual

4: Reference Information – 4.13

Select Item
You can use the arrow keys on your keyboard to move around

the screen and select a menu item. An item is highlighted when
it is selected.

Change Color
You can change the program color scheme by pressing Shift +

F2.
Modify
To change the setting of a highlighted selection you can press

either the Page Up (PU) and Page Down (PD) keys or the Plus
(+) and Minus (–) keys. Pressing a key once will switch to the
next setting option for the selected item.

If your mainboard is already installed in a working system the
proper entries are already entered on this screen and you shouldn’t
change them except for adjusting the Date and Time entries if
necessary.

Date & Time

The first two lines on the screen are the date and time settings
for the system clock.

Hard Disk Type & Parameters

For an IDE hard disk drive, you should set the entries to “Auto”
and the BIOS will automatically detect all drive information
needed.

You can also use the IDE HDD Auto Detection feature, de­scribed later, to automatically enter the drive parameters of IDE
hard disk drives in these fields. If you have only SCSI hard disk
drives installed in your system leave the settings here at None.
Only hard disk information needs to be entered here. Other IDE
devices do not use this.

If you use the IDE HDD Auto Detection utility to supervise
the auto-detection process, leave the drive items set to “None”.
You can also enter specifications manually by setting a line to the
“User” option.

P6EX-A+ User’s Manual

4: Reference Information – 4.14

Large Hard Disk Modes

The last of the drive parameter entries – Mode – has four op-

tions, Normal, LBA, Large and Auto. The Mode settings are for
IDE hard disks only.

Normal
For IDE hard disks of 528MB or less.
LBA
This stands for Logical Block Addressing, the current standard

access mode for large IDE hard disk drives. It allows the use of
hard disks larger than 528MB by causing the IDE controller to
translate between the logical address it creates and the hard
disk’s actual physical address. The maximum drive size sup­ported is 8.4GB.

Large
For 1GB or smaller drives with more than 1024 cylinders and

no LBA support. This access mode causes the Operating Sys­tem to treat the drive as if it has fewer than 1024 cylinders by
dividing the cylinder total in half and doubling the number of
heads. Drives needing this mode are less common.

Most large IDE hard disk drives currently available use the

LBA mode. Use the AUTO setting to automatically detect the
correct mode for new drives.

Floppy Disk Drives

The two floppy disk drive items set the drive type for drives A

and B, and must be entered manually. The options are

360KB, 5.25 in.

1.2MB, 5.25 in.
720KB, 3.5 in.

1.44MB, 3.5 in.

2.88MB, 3.5 in.
None

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Highlight the listing after each drive name and select the ap­propriate entry.

Floppy 3 Mode Support

3 Mode is a Japanese 3.5-inch floppy disk drive specification.
If this type of drive is installed you should enable this feature.
The default setting is Disabled.

Video Display Types

You set this according to the type of display card in your sys­tem. This should normally be left on EGA/VGA. The options are:

EGA/VGA
Mono (for Hercules or MDA)
CGA 40
CGA 80

Error Handling

The last line – Halt On – sets when the system stops if an
error occurs. The options are:

All Errors (Default)
No Errors
All, But Keyboard
All, But Diskette
All, But Disk/Key

When you are finished in this section, exit to the main menu
screen by pressing the Esc key.

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BIOS Features Setup

To enter this section of the Setup program, highlight this menu

item in the main menu and press the Enter key. The following
screen will appear.

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Menu Commands

If you look at the lower portion of the screen illustration you’ll
see a section that lists the control commands for this level of the
program. You execute a command by pressing the key for that
command. The program commands are :

Quit

This command will close the Setup program when you press

the ESC key.
Help

This displays information about the highlighted item when

you press the F1 key.
Select Item

You can use the arrow keys on your keyboard to move around

the screen and select a menu item. An item is highlighted when

it is selected.
Modify

To change the setting of a highlighted selection you can press

either the Page Up (PU) and Page Down (PD) keys or the Plus

(+) and Minus (–) keys. Pressing a key once will switch to the

next setting option for the selected item.
Change Color

Change the program color scheme by pressing Shift + F2.
Old Values

If you make changes during the current session and you don’t

want to keep them you can recall the last set of saved values

for this page by pressing the F5 key.
Load BIOS Defaults

Pressing F6 loads the BIOS Default settings for this page.
Load Optimum Settings

Pressing F7 loads the Optimum settings for this page.

If your mainboard is already installed in a working system the
proper entries are already entered on this screen and you shouldn’t
change them.

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4: Reference Information – 4.18

CPU Internal Core Speed

This line sets the core speed of the installed Pentium II. The

core speed is the CPU’s operating speed. The external clock and
multiplier are set automatically when you set this. You can set
the speed to 233, 266 or 300MHz or set this to Manual, if for
some reason you want to set the core speed manually.

When set to Manual and you can set the CPU Bus Frequency

and Bus Frequency Multiple lines that appear to the combination
you require. Doing this is not recommended.

Warning: If you set this line to a speed too fast for the in-

stalled CPU and the system will not function, turn off the sys­tem, remove and replace the CPU and then restart. The system
will default to 233MHz and you can reset the CPU setting.

Virus Warning

This protects the primary hard disk’s boot sector and partition

table from infection. Any attempt to write to them will halt the
system and produce a warning message. If this happens, you can
either allow the system to continue or stop it and boot from a
virus-free bootable floppy disk. Use an anti-virus utility on the
floppy to check the hard disk. The default setting is Disabled.

CPU Internal Cache

This enables CPU’s Level 1 built-in cache. Leave it enabled to

maintain system performance. The default setting is Enabled.

Quick Power On Self Test

This feature speeds up the Power On Self Test (POST) by skip-

ping some parts of the POST. If your system is functioning nor­mally, you can enable this feature to speed the boot process. The
default setting is Enabled.

Boot From LAN First

The default for this is Disabled. If you set this to Enabled, the

system will first try to boot from a LAN it is connected to before
trying to boot from the system’s internal hard disk drive.

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Boot Sequence

This determines the order in which the computer checks drives
for an operating system. In addition to the drive A: floppy disk
drive and the drive C: boot hard disk, you can configure the or­der to include another IDE hard disk drive or CD-ROM drive, a
SCSI device or an LS-120 or Zip drive.

Swap Floppy Drive

This switches the floppy drive assignments so that drive A is
treated as drive B: and drive B: as drive A: under DOS. The de­fault setting is Disabled.

Boot Up NumLock Status

This item allows you to select which mode the numeric key­pad on an IBM-compatible extended keyboard is set to when the
computer boots up. The options are:

On – Numeric keypad mode (Default)
Off – Cursor control mode

Gate A20 Option

This sets the gate A20 control. The two options are:

Fast – Recommended default
Normal

Security Option

This sets when password protection is active. The two op­tions are:

System – Password required at boot up
Setup – Password controls access to Setup utility

You create a password using the Password Setting option in
the main menu. With no password set, the system ignores this.

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PCI/VGA Palette Snoop

If your video display card has an MPEG card attached to the

feature connector, the display may invert to black on white while
booting. If this happens, set this line to Enabled to correct the
problem. The default setting is Disabled.

OS Select For DRAM >64MB

If your system has more than 64MB of system memory and

the OS/2 operating system is in use, set this to the OS2 setting.
The default setting, Non-OS2, is for all other operating systems.

HDD S.M.A.R.T. capability

The default for this is Disabled. If you have a hard disk drive

that supports the S.M.A.R.T. diagnostic feature set this line to
Enabled so that the system can use it.

Video BIOS Shadow

This copies the video display card BIOS into system DRAM

to increase display speed and is required for system performance.
The default setting is Enabled.

Shadowing Address Ranges

The next six lines, from C8000-CBFFF Shadow to DC000-

DFFFF Shadow are address ranges for shadowing other expan­sion card ROMs. If there are any expansion cards with ROMs
installed in your system, you have to know the address range
they use to shadow them specifically. The default setting for all
of these is Disabled.

When you are done in this section press the Esc key to return

to the main menu.

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Chipset Features Setup

To enter this section of the Setup program, highlight this menu
item in the main menu and press the Enter key. The screen above
will appear. Everything on this screen is either an optimum set­ting or set automatically when auto-configuration is active. Un­less you know what you are doing, we recommend against mak­ing any manual settings in this section, with the exception of the
Memory Hole and AGP Aperture Size items.

Menu Commands

The menu commands for this screen are the same as for the
BIOS Features Setup screen.

Auto Configuration

Auto-configuration will automatically set values in this sec­tion. If you disable auto-configuration you can set the DRAM
timing values manually. The default setting is Enabled.

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Memory Hole At 15M–16M

Some special add-on cards require a 1MB address space be-

tween 15 and 16MB. The documentation for this type of card
should tell you if it needs this. The default setting is Disabled.

AGP Aperture Size

This item sets the maximum amount of system memory an

AGP display card will use to store 3D texture mapping data. The
larger the aperture, the better the performance of this 3D func­tion. The settings range from 4MB to 256MB. The default setting
is 64MB.

PC Health Monitor

This section only displays when the optional monitoring hard-

ware is installed on the mainboard. With the sensor hardware
installed this section displays information the hardware detects
including system temperature, cooling fan speed and system volt­age levels. Intel’s LANDesk Client Manager software is also in­cluded on the Support Disk when the hardware option is installed.

The voltage listings correspond to the following:
IN0 (V): CPU voltage
IN1 (V): Vcc2 voltage
IN2 (V): Vcc3 voltage
IN3 (V): Vcc voltage
IN4 (V): +12V
IN5 (V): –12V
IN6 (V): –5V

To return to the main menu press the Esc key.

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4: Reference Information – 4.23

Power Management Setup

To enter this section of the Setup program, highlight this menu
item in the main menu and press the Enter key. The screen above
will appear.

Menu Commands

The menu commands for this screen are the same as for the
BIOS Features Setup screen.

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What Power Management Does

Power management lets you set up your computer to save

electricity when it is not actively in use by putting the system
into progressively greater power saving modes. In the power man­agement scheme there are four system states which proceed in
the following sequence:

Normal

Doze

Standby

Suspend

Power Management

This controls the entire power management scheme. There

are four settings:
User Defined

You set the power saving options manually

Disable

Turns off all power management

Max Saving

Maximizes power saving by activating maximum power sav­ing settings after one minute of system inactivity

Min Saving

Produces less power saving by activating moderate power sav­ing settings after one hour of system inactivity

PM Control By APM

When this is set to Yes the Advanced Power Management fea-

ture in Microsoft Windows controls power management opera­tion. The default setting is No.

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Video Off After

This governs when the video display gets turned off. The op­tions are:

Suspend Off after system enters Suspend mode
Standby Off after system enters Standby mode
Doze Off after system enters Doze mode
N/A No display shut off

Modem Use IRQ

This tells the system which IRQ a modem connected to the it
is using. The default is IRQ3, which is for the COM2 serial port.
The system uses this setting to know to respond to a modem ring
and wake up the system when it is in Suspend mode. If you in­stall a modem in or connect one to the systemand it does not use
IRQ3, set this line to the IRQ the modem is using.

Doze Mode

This sets the period of system inactivity after which the sys­tem goes into Doze mode, the most limited power saving state.
The settings range from 1 minute to 1 hour and can be set manu­ally when power management is in User Define mode. The de­fault setting is Disabled. When the system goes into power sav­ing mode, power management will skip to the next mode in the
sequence if this is disabled.

Standby Mode

This sets the period of system inactivity after which the sys­tem goes into Standby mode, the intermediate power saving state.
The settings range from 1 minute to 1 hour and can be set manu­ally when power management is in User Define mode. The de­fault setting is Disabled. When the system goes into power sav­ing mode, power management will skip to the next mode in the
sequence if this is disabled.

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Suspend Mode

This sets the period of system inactivity after which the sys-

tem goes into Suspend mode, the maximum power saving state.
The settings range from 1 minute to 1 hour and can be set manu­ally when power management is in User Define mode. The de­fault setting is Disabled. When the system goes into power sav­ing mode, power management will skip to the next mode in the
sequence if this is disabled.

HDD Power Down

This shuts down IDE hard disks that support a power saving

mode after a specified time period. The settings range from 1 to
15 minutes and can be set manually when power management is
in User Define mode. HDD Power Down does not affect SCSI
hard disks. The default setting is Disabled.

The system automatically resumes from any power saving

mode when there is system activity such as keyboard activity or
an IRQ wake-up event like mouse movement or a modem ring.

Throttle Duty Cycle

This line sets the percentage by which the CPU speed is cut

back when power saving initiates. The settings are:

62.5% Default
75%

87.5%

12.5%
25%

37.5%
50%

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VGA Active Monitor

When this line is set to the default, Enabled, the system will
not initiate power saving while there is display activity. The other
option is Disabled.

Soft-Off By PWR-BTTN

This line controls the function of a system power switch at­tached to the Power Button pins of the J16 connector. When set
to the default, you must press the power switch for four seconds
or more to turn the system off. Pressing it for less than four sec­onds will put the system into Suspend mode. If your system has
a separate Suspend switch you can set this to Instant Off and the
power switch will only function to turn the system on and off.

Delay 4 Sec. Default
Instant Off

Resume By Alarm

You can set the system to wake up at a certain date and time
by setting this line to Enabled. When enabled, two more lines
appear to allow you to set the wake-up date and time. The date
is a day within the current calendar month. The screen on the
next page illustrates this. The default setting is Disabled.

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Break Event From Suspend

The two lines in this section control whether the system will

wake-up if either of the events noted occur. The defaults are shown
on the screen illustration. If you want the system to wake up
when an installed or connected modem receives an incoming call,
or when contacted over a LAN connection, the Wake Up On
LAN/Ring must be set to Enabled. You must also set which IRQ
the modem is using in the Modem Use IRQ line in order for the
modem wake-up feature to work.

Reload Global Timer Events

The system will restart the power saving count-down when

an event generates from any of the items in this section that are
set to Enabled. The defaults are shown above.

When you are finished in this section, press the Esc key to

return to the main menu.

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PNP/PCI Configuration

To enter this section of the Setup program, highlight this menu
item in the main menu and press the Enter key. The following
screen will appear.

Menu Commands

The menu commands for this screen are the same as for the
BIOS Features Setup screen.

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Resources Controlled By

When this line is set to Auto the BIOS will automatically con-

figure IRQ and DMA resources. This is the recommended set­ting. If you set this line to Manual, the screen changes as shown
above and allows manual configuration. In general you should
only need to do this if you are installing an ISA card that requires
manual configuration.

Reset Configuration Data

The default setting is ‘Disabled’. If you need to clear the ESCD

data, set this to ‘Enabled’. The data will clear automatically and
the BIOS will reset this line to the ‘Disabled’ setting.

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PCI IDE IRQ Map To

Most of PCI IDE cards are non-PCI compliant. This line de­fines the IRQ Routing to make them work properly. The avail­able settings are:

PCI-AUTO (default)
ISA
PCI-SLOT1
PCI-SLOT2
PCI-SLOT3
PCI-SLOT4

If you set this option to ‘ISA’, both the ‘Primary IDE INT#’
and ‘Secondary IDE INT#’ options below it will not appear on
the screen.

Primary/Secondary IDE INT#

These define the primary/secondary IDE INT# of a PCI IDE
card. The setting options are:

A (Primary IDE INT# default )
B (Secondary IDE INT# default )
C
D

Assign IRQ For USB

To use the USB ports the required default setting is Enabled.

When you are finished you can press the Esc key to return to
the main menu.

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Load BIOS Defaults

To use this command highlight it in the main menu and press

Enter. A message will appear asking if you want to load the BIOS
Defaults. Press the Y key and then the Enter key. The BIOS de­fault settings will load. Press the N key if you want to cancel.

This loads a set of troubleshooting default values permanently

stored in the BIOS ROM. The settings are not optimal and turn
off all the performance features. Standard CMOS Setup is not
affected by this command.

Load Optimum Settings

To use this command highlight it in the main menu and press

Enter. A message will appear asking if you want to load the Op­timum Settings. Press the Y key and then the Enter key. The opti­mum default settings will load. Press the N key if you want to
cancel.

This loads a set of optimized default values permanently stored

in the BIOS ROM. Use this command to load default settings for
normal system operation. Standard CMOS Setup is not affected
by this command.

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Integrated Peripherals

This section sets the IDE transfer mode for all IDE channels. It
also configures the other onboard ports.

Menu Commands

The menu commands for this screen are the same as for the
BIOS Features Setup screen.

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IDE HDD Block Mode

Enables hard disk drive block transfer mode . The setting op-

tions are:

Enabled (default)
Disabled

IDE Primary/Secondary Master/Slave PIO

These four lines set the hard disk PIO transfer mode, which

affects the hard disk data transfer rate. The system will auto­detect the PIO mode of a device in any of these positions when
they are set to ‘Auto’, the recommended setting. Alternatively,
you can set the mode manually. Modes 0 to 4 are supported.

IDE Primary/Secondary Master/Slave UDMA

These four lines set the hard disk UltraDMA transfer mode,

which requires a drive that supports this data transfer method.
The system will auto-detect an UltraDMA device in any of the
four EIDE channels when these are set to ‘Auto’, the default set­ting. The other setting is Disabled. You can leave this set to Auto
without effect if there are no UltraDMA devices installed.

On-Chip Primary/Secondary PCI IDE

Enables or Disables the Primary or Secondary PCI controllers.

Selecting “Disabled”
Secondary).

Enabled (default)
Disabled

releases IRQ14 ( for Primary) or IRQ15 (for

USB Keyboard Support

Enables or Disables support for a USB keyboard. Enable this if

you connect a USB keyboard. The default is Disabled.

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Init Display First

This line sets where the system initially looks for a display
card. The default setting is PCI Slot. If your system has an AGP
display card set this to AGP.

POWER ON Function

This section has two lines, KB Power ON Password and Hot
Key Power ON. This mainboard supports turning on the system
using a keyboard command.

KB Power ON Password sets an access password for the hot
key power on feature. Highlight the option field entry Enter and
press the Enter key to set the password.

Hot Key Power ON sets the hot key command key combina­tion that turns on the system. The default combination is Ctrl­F12 which means to press the Control (Ctrl) key and the F12 key
together.

Onboard FDD Controller

Enables or Disables the onboard Floppy Drive controller.

Onboard Serial Port 1/2

Sets the I/O address for serial ports 1 & 2.

3F8/IRQ4 Onboard serial port COM1 default
2F8/IRQ3 Onboard serial port COM2 default
3E8/IRQ4
2E8/IRQ3
Disabled

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UART Mode Select

Sets mode for the second serial port UART. If you select an IR

module type, the second serial port will not be available. The
setting options are:

Standard (default) – (used by COM2 serial port)
ASKIR
IrDA

The infrared mode you select here should be the same as the

infrared module you have connected to the mainboard. You can
also manually configure the RxD and TxD settings if the defaults
are not correct for the installed module. See the screen illustra­tion above.

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Onboard Parallel Port

Sets the I/O address for the onboard parallel port. The setting
options are:

378H/IRQ7 (default)
Disabled
278H/IRQ5
3BCH/IRQ7

If you set this option to ‘Disabled’, the next option, ‘Onboard
Parallel Mode’,

will not appear on the screen.

Onboard Parallel Mode

Selects the parallel port mode. The setting options are:

SPP (default)
ECP/EPP
EPP/SPP
ECP

If you set this option to ‘SPP’ or ‘EPP/SPP’, the ‘ECP Mode
Use DMA’ option will not appear on the screen. If you set this
option to ‘SPP’ or ‘ECP’, the ‘Parallel Port EPP Type’ option will
not appear on the screen.

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ECP Mode Use DMA

Selects the ECP Mode DMA channel. The setting options are:

3 (default)
1

Parallel Port EPP Type

Sets the EPP protocol version. The setting options are:

EPP 1.7 (default)
EPP 1.9

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Supervisor & User Password Settings

To use either of these commands, highlight one in the main menu and

press Enter. A message will appear prompting you to enter a password.

Type in a password. The password is case sensitive, and can be up to 8
alphanumeric characters. Press Enter when you finish typing in the pass­word.

If you typed in a password, the message “Confirm Password” will ap­pear. Confirm the password by typing it again and pressing Enter. The mes­sage box will close.

If you decide you don’t want to set a password after you activate this
command, or if you want to eliminate an existing password, press Enter
without typing anything else. The message “Password Disabled” will ap­pear and the message box will close.

When you set a password, the Security Option line in BIOS Features
Setup controls when the password is required. You can set the option to
require the password when the system boots up or when calling up the
CMOS Setup utility. The mainboard ships with no password.

IDE HDD Auto Detection

When you install an IDE hard drive, you can use this feature to automati­cally detect the drive parameters and enter them in the appropriate Hard
Disk section of Standard CMOS Setup. However, since the Auto settings in
Standard CMOS Setup perform the same function, you do not need to con­figure IDE hard disk drives from here. If you want to use this feature, high­light it in the main menu and press the Enter key.

Save And Exit Setup

When you select this and press Enter the values entered during the cur­rent session are recorded in CMOS memory.

Exit Without Saving

When you select this and press Enter the Setup Utility closes without
recording any changes made during the current session.

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