DFI PE21-EC, PE21-EL/A, PE21-EL, PE21-EC/A User Manual
PE21-EC
PE21-EL
PE21-EC/A
PE21-EL/A
Rev. A+
Mainboard
User’s Manual
60100225
Copyright
This publication contains information that is protected by copyright.
No part of it may be reproduced in any form or by any means or
used to make any transformation/adaptation without the prior
written permission from the copyright holders.
This publication is provided for informational purposes only. The
manufacturer makes no representations or warranties with respect to
the contents or use of this manual and specifically disclaims any
express or implied warranties of merchantability or fitness for any
particular purpose. The user will assume the entire risk of the use or
the results of the use of this document. Fur ther, the manufacturer
reserves the right to revise this publication and make changes to its
contents at any time, without obligation to notify any person or
entity of such revisions or changes.
© 2002. All Rights Reserved.
Trademarks
Windows® 98, Windows® 98 SE, Windows® ME, Windows® 2000,
Windows NT® 4.0 and Windows® XP are registered trademarks of
Microsoft Corporation. Intel® and Pentium® 4 are registered
trademarks of Intel Corporation. VIA is a registered trademark of
VIA Technologies, Inc. Award is a registered trademark of Award
Software, Inc. Other trademarks and registered trademarks of
products appearing in this manual are the properties of their
respective holders.
Caution
To avoid damage to the system:
• Use the correct AC input voltage range.
To reduce the risk of electric shock:
• Unplug the power cord before removing the system chassis
cover for installation or ser vicing. After installation or ser vicing,
cover the system chassis before plugging the power cord.
Battery:
• Danger of explosion if battery incorrectly replaced.
• Replace only with the same or equivalent type recommend by
the manufacturer.
• Dispose of used batteries according to the battery
manufacturer’s instructions.
Joystick or MIDI port:
• Do not use any joystick or MIDI device that requires more than
10A current at 5V DC. There is a risk of fire for devices that
exceed this limit.
FCC and DOC Statement on Class B
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 when the equipment is operated in a residential
installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with
the instruction manual, 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 tr y to correct the interference by one or more of the
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into 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.
Notice:
1. The changes or modifications not expressly approved by the
party responsible for compliance could void the user's authority
to operate the equipment.
2. Shielded interface cables must be used in order to comply with
the emission limits.
Notice
This user’s manual contains detailed information about the
mainboard. If, in some cases, some information doesn’t match those
shown in the multilingual manual, the multilingual manual should
always be regarded as the most updated version. The multilingual
manual is included in the mainboard package.
To view the user’s manual, insert the CD into a CD-ROM drive. The
autorun screen (Main Board Utility CD) will appear. Click “User’s
Manual”.
Mainboard
This user’s manual is for the PE21-EC, PE21-EL, PE21-EC/A and
PE21-EL/A mainboards. The differences between these boards are
shown below.
RJ45 LAN port
Diagnostic LEDs
S/PDIF-in connector
S/PDIF-out connector
4CH audio connector
PE21-EL
PE21-EC
PE21-EC/A
PE21-EL/A
Table of Contents
Chapter 1 - Introduction
1.1 Features and Specifications..................................................................................
1.2 Package Checklist.........................................................................................................
Chapter 2 - Hardware Installation
2.1 Mainboard Layout ...................................................................................................
2.2 System Memory...........................................................................................................
2.3 Jumper Settings for Clearing CMOS Data........................................
2.4 Jumper Settings for Selecting the PS/2 Power................................
2.5 Jumper Settings for Selecting the USB Power.................................
2.6 Jumper Settings for Selecting the CPU’s Front Side Bus......
2.7 Por ts and Connectors...........................................................................................
Chapter 3 - Award BIOS Setup Utility
3.1 The Basic Input/Output System.....................................................................
3.1.1 Standard CMOS Features.............................................................
3.1.2 Advanced BIOS Features..............................................................
3.1.3 Advanced Chipset Features ......................................................
3.1.4 Integrated Peripherals.........................................................................
3.1.5 Power Management Setup............................................................
3.1.6 PnP/PCI Configurations....................................................................
3.1.7 PC Health Status...................................................................................
3.1.8 Frequency/Voltage Control............................................................
3.1.9 Load Fail-Safe Defaults.....................................................................
3.1.10 Load Optimized Defaults..............................................................
3.1.11 Set Supervisor Password...............................................................
3.1.12 Set User Password..............................................................................
3.1.13 Save & Exit Setup.................................................................................
3.1.14 Exit Without Saving..............................................................................
3.2 Updating the BIOS.....................................................................................................
7
14
55
55
60
64
71
78
85
88
90
92
92
93
93
94
94
95
15
19
21
23
24
25
26
Introduction
1
6
118
118
Chapter 4 - Supported Softwares
4.1 Desktop Management Interface.................................................................
4.2 Drivers, Utilities and Software Applications.....................................
4.3 6-Channel Audio Output via Software...............................................
4.4 Installation Notes......................................................................................................
Appendix A - Using the Suspend to RAM
Function
A.1 Using the Suspend to RAM Function...................................................
Appendix B - System Error Messages
B.1 POST Beep....................................................................................................................
B.2 Error Messages...........................................................................................................
Appendix C - Troubleshooting
C.1 Troubleshooting Checklist.................................................................................
97
100
111
113
114
120
1
Introduction
7
1.1 Features and Specifications
1.1.1 Features
Chipset
• VIA® P4X400 chipset
- VT8754/VT8235CD
Processor
The mainboard is equipped with Socket 478 for installing a Pentium
®
4 or Celeron® processor.
• Intel® Pentium® 4 processor (478-pin)
- 533MHz system data bus - supports up to 2.53 GHz CPU
speed
- 400MHz system data bus - supports up to 2.4 GHz CPU
speed
• Intel® Celeron® processor (478-pin)
- 400MHz system data bus - supports up to 1.7 GHz CPU
speed
System Memory
• Three 184-pin DDR DIMM sockets
• Supports up to 3GB using PC1600 (DDR200), PC2100
(DDR266) or PC2700 (DDR333) unbuffered DDR SDRAM
DIMM, 2.5V type
Chapter 1 - Introduction
DIMMs
2MBx64
4MBx64
8MBx64
Memory Size
16MB
32MB
64MB
DIMMs
16MBx64
32MBx64
64MBx64
Memory Size
128MB
256MB
512MB
Introduction
1
8
Expansion Slots
The mainboard is equipped with 1 universal AGP slot and 6 PCI
slots.
AGP is an interface designed to support high performance 3D
graphics cards. It utilizes a dedicated pipeline to access system
memory for texturing, z-buffering and alpha blending. The universal
AGP slot supports AGP 8x with up to 2133MB/sec. bandwidth and
AGP 4x with up to 1066MB/sec. bandwidth for 3D graphics
applications. AGP in this mainboard will deliver faster and better
graphics to your PC.
Onboard Audio Features
• Supports Microsoft® DirectSound/DirectSound 3D
• AC’97 supported with full duplex, independent sample rate
converter for audio recording and playback
• S/PDIF-in/out compressed digital output (PE21-EC/A and
PE21-EL/A only)
• 2-channel audio output (PE21-EC and PE21-EL only)
• 6-channel audio output (PE21-EC/A and PE21-EL/A only)
Onboard LAN Features (PE21-EL and PE21-EL/A only)
• Integrated LAN controller
• Integrated IEEE 802.3, 10BASE-T and 100BASE-TX compatible
PHY
• 32-bit PCI master interface
• Integrated power management functions
• Full duplex support at both 10 and 100 Mbps
• Supports IEEE 802.3u auto-negotiation
• Suppor ts wire for management
Rear Panel I/O Ports (PC 99 color-coded connectors)
• Two USB 2.0 ports (compliant with USB 1.1)
• One RJ45 LAN port (PE21-EL and PE21-EL/A only)
• Two DB-9 serial ports
• One DB-25 parallel port
• One mini-DIN-6 PS/2 mouse port
• One mini-DIN-6 PS/2 keyboard por t
• One game/MIDI por t
• Three audio jacks: line-out, line-in and mic-in
1
Introduction
9
I/O Connectors
• Two connectors for 4 additional external USB 2.0 ports
(compliant with USB 1.1)
• One connector for external line-out and mic-in jacks
• Two internal audio connectors (AUX-in and CD-in)
• One 4-channel audio output connector (PE21-EC/A and
PE21-EL/A only)
• One S/PDIF-in connector (PE21-EC/A and PE21-EL/A only)
• One S/PDIF-out connector (PE21-EC/A and PE21-EL/A only)
• One connector for IrDA interface
• Two IDE connectors
• One floppy drive interface supports up to two 2.88MB floppy
drives
• Two ATX power supply connectors
• One Wake-On-LAN connector
• One Wake-On-Ring connector
• CPU fan, chassis fan and second chassis fan connectors
PCI Bus Master IDE Controller
• Two PCI IDE interfaces support up to four IDE devices
• Supports ATA/33, ATA/66, ATA/100 and ATA/133 hard drives
• UDMA Modes 3, 4, 5 and 6 Enhanced IDE (data transfer rate
up to 133MB/sec.)
• Bus mastering reduces CPU utilization during disk transfer
• Supports ATAPI CD-ROM, LS-120 and ZIP
S/PDIF (PE21-EC/A and PE21-EL/A only)
The system board is equipped with the S/PDIF (Sony/Philips Digital
Interface) digital audio interface. S/PDIF is a standard audio file
transfer format that transfers digital audio signals to a device without
having to be converted first to an analog format. This prevents the
quality of the audio signal from degrading whenever it is converted
to analog.
IrDA Interface
The mainboard is equipped with an IrDA connector for wireless
connectivity between your computer and peripheral devices.
Introduction
1
10
USB Ports
The mainboard supports 6 USB 2.0 (compliant with USB 1.1) ports.
USB 1.1 supports 12Mb/second bandwidth while USB 2.0 supports
480Mb/second bandwidth providing a marked improvement in
device transfer speeds between your computer and a wide range of
simultaneously accessible external Plug and Play peripherals.
BIOS
• Award BIOS, Windows® 98/2000/ME/XP Plug and Play
compatible
• Supports SCSI sequential boot-up
• Flash EPROM for easy BIOS upgrades
• Supports DMI 2.0 function
• 2Mbit flash memory
Desktop Management Interface (DMI)
The mainboard comes with a DMI 2.0 built into the BIOS. The DMI
utility in the BIOS automatically records various information about
your system configuration and stores these information in the DMI
pool, which is a par t of the system board's Plug and Play BIOS.
DMI, along with the appropriately networked software, is designed
to make inventory, maintenance and troubleshooting of computer
systems easier. Refer to chapter 4 for instructions on using the DMI
utility.
1.1.2 System Health Monitor Functions
The mainboard is capable of monitoring the following “system health”
conditions.
• Monitors the temperature of the CPU and system; and overheat
alarm
• Monitors CPU/3.3V/5V/±12V/VDIMM/VBAT/5VSB voltages and
failure alarm
• Monitors the fan speed of the CPU fan and chassis fan; and
failure alarm
• Automatic chassis fan on/off control
• Read back capability that displays temperature, voltage and fan
speed
1
Introduction
11
Refer to the “PC Health Status” section in chapter 3 and the
“Hardware Monitor” section in chapter 4 for more information.
1.1.3 Intelligence
Automatic Chassis Fan Off
The chassis fan will automatically turn off once the system enters the
S3 (STR - Suspend To RAM) state.
Dual Function Power Button
Depending on the setting in the “Soft-Off By PWRBTN” field of the
Power Management Setup, this switch will allow the system to enter
the Soft-Off or Suspend mode.
Wake-On-Ring
This feature allows the system that is in the Suspend mode or Soft
Power Off mode to wake-up/power-on to respond to calls coming
through an internal or external modem. Refer to “Wake-On-Ring
Connector” in chapter 2 and “Resume On LAN/Ring” (“IRQ/Event
Activity Detect” field) in the Power Management Setup section in
chapter 3 for more information.
Important:
If you are using a modem add-in card, the 5VSB power source
of your power supply must support ≥720mA.
Wake-On-LAN
The Wake-On-LAN function allows the network to remotely wake
up a Soft Power Down (Soft-Off) PC. Your LAN card must suppor t
the remote wakeup function. Refer to “Wake-On-LAN Connector” in
chapter 2 and “Resume On LAN/Ring” (“IRQ/Event Activity Detect”
field) in the Power Management Setup section in chapter 3 for more
information.
Important:
The 5VSB power source of your power supply must support
≥720mA.
Introduction
1
12
Wake-On-PS/2 Keyboard
This function allows you to use the PS/2 keyboard to wake up the
system from the S5 state. Refer to “Jumper Settings for Selecting the
PS/2 Power” in chapter 2 and “PS2KB Wakeup Select” (“IRQ/Event
Activity Detect” field) in the Power Management section in chapter 3
for more information.
Important:
• If you forgot the password, you must power-off the system,
unplug the power cord and clear the CMOS data. Follow
the steps in the “Jumper Settings for Clearing CMOS Data”
section in chapter 2.
• The 5VSB power source of your power supply must
support ≥720mA.
Wake-On-USB Keyboard/Mouse
This function allows you to use a USB keyboard or USB mouse to
wake up a system from the S3 (STR - Suspend To RAM) state. Refer
to “Jumper Settings for Selecting the USB Power” in chapter 2 and
“USB Resume from S3” (“IRQ/Event Activity Detect” field) in the
Power Management Setup section in chapter 3 for more information.
Important:
• If you are using the Wake-On-USB Keyboard/Mouse
function for 2 USB ports, the 5VSB power source of your
power supply must support ≥1.5A.
• If you are using the Wake-On-USB Keyboard/Mouse
function for 3 or more USB ports, the 5VSB power source
of your power supply must support ≥2A.
RTC Timer to Power-on the System
The RTC installed on the mainboard allows your system to automatically power-on on the set date and time. Refer to “Resume On-
Alarm” (“IRQ/Event Activity Detect” field) in the Power Management
Setup section in chapter 3 for more information.
1
Introduction
13
ACPI STR
The mainboard is designed to meet the ACPI (Advanced Configuration and Power Interface) specification. ACPI has energy saving features that enables PCs to implement Power Management and Plugand-Play with operating systems that support OS Direct Power
Management. Currently, only Windows® 98/2000/ME/XP supports
the ACPI function. ACPI when enabled in the Power Management
Setup will allow you to use the Suspend to RAM function.
With the Suspend to RAM function enabled, you can power-off the
system at once by pressing the power button or selecting “Standby”
when you shut down Windows® 98/2000/ME/XP without having to
go through the sometimes tiresome process of closing files,
applications and operating system. This is because the system is
capable of storing all programs and data files during the entire
operating session into RAM (Random Access Memory) when it
powers-off. The operating session will resume exactly where you left
off the next time you power-on the system. Refer to “Using the
Suspend to RAM Function” in appendix A for more information.
Important:
The 5VSB power source of your power supply must support
≥1A.
AC Power Failure Recovery
When power returns after an AC power failure, you may choose to
either power-on the system manually, let the system power-on
automatically or return to the state where you left off before power
failure occurs. Refer to “PWR Lost Resume State” in the Power
Management Setup section in chapter 3 for more information.
Virus Protection
Most viruses today destroy data stored in hard drives. The
mainboard is designed to protect the boot sector and partition
table of your hard disk drive.
Introduction
1
14
1.2 Package Checklist
The mainboard package contains the following items:
The mainboard
A user’s manual
One IDE cable for ATA/33, ATA/66, ATA/100 or ATA/133 IDE
drives
One 34-pin floppy disk drive cable
One card-edge bracket mounted with 1 S/PDIF-in port and 1
S/PDIF-out port (optional)
One card-edge bracket mounted with a 4-channel audio output
connector (optional)
One “Main Board Utility” CD
If any of these items are missing or damaged, please contact your
dealer or sales representative for assistance.
2
Hardware Installation
15
2.1 Mainboard Layout
Chapter 2 - Hardware Installation
PE21-EC
1
RESET
SPEAKER
HD-LED
J1
KB
Mouse
Socket 478
CN1
USB 1
USB 2
COM 1 (J2)
Parallel (J3)
COM 2 (J4)
Game/MIDI (J7)
Line
out
(J5)
Line
in
(J6)
Mic
in
(J8)
PS/2 power
select (JP2)
USB power select
for USB 1/2 (JP1)
+12V power
(ATXP1)
4
3
2
1
VIA
VT8754
CPU FSB select
(JP3 and JP8)
CD-in
(J9)
2
1
9
10
Front
audio (J10)
AUX-in (J11)
PCI Standby Power LED
IrDA (J15)
I/O
chip
BIOS
AGP Slot
PCI Slot 1
PCI Slot 2
PCI Slot 3
PCI Slot 4
PCI Slot 5
PCI Slot 6
DIMM Standby
Power LED
CPU fan
(J23)
ATX p ow er
(J24)
DDR 1
DDR 2
DDR 3
VIA
VT8235CD
IDE 1 (J19)
IDE 2 (J20)
FDD (J21)
Clear CMOS
(JP6)
Chassis fan (J25)
Wake-On-
LAN (J27)
Wake-On-
Ring (J26)
Battery
USB 3/4
(J17)
USB 5/6 (J18)
PWR-LED
G-SW
ATX-SW
G-LED
Second
chassis fan (J16)
2
1
9
10
2
1
9
10
USB power select
for USB 3-6 (JP4)
J22
1
2
20
19
1
10
11
20
Square denotes pin 1
JP3
JP8
AC’97
2
16
Hardware Installation
PE21-EC/A
(Supports 6-channel audio - S/PDIF-in/out and 4-channel audio connectors)
1
RESET
SPEAKER
HD-LED
J1
KB
Mouse
Socket 478
CN1
USB 1
USB 2
COM 1 (J2)
Parallel (J3)
COM 2 (J4)
Game/MIDI (J7)
Line
out
(J5)
Line
in
(J6)
Mic
in
(J8)
+12V power
(ATXP1)
4
3
2
1
VIA
VT8754
CPU FSB select
(JP3 and JP8)
CD-in
(J9)
2
1
9
10
Front
audio (J10)
AUX-in (J11)
S/PDIF-
out (J13)
4CH audio (J14)
AC’97
S/PDIF-in
(J12)
PCI Standby Power LED
IrDA (J15)
I/O
chip
BIOS
AGP Slot
PCI Slot 1
PCI Slot 2
PCI Slot 3
PCI Slot 4
PCI Slot 5
PCI Slot 6
DIMM Standby
Power LED
CPU fan
(J23)
ATX p ow er
(J24)
DDR 1
DDR 2
DDR 3
VIA
VT8235CD
FDD (J21)
Clear CMOS
(JP6)
Chassis fan (J25)
Wake-On-
LAN (J27)
Wake-On-
Ring (J26)
Battery
USB 3/4
(J17)
USB 5/6 (J18)
PWR-LED
G-SW
ATX-SW
G-LED
Second
chassis fan (J16)
2
1
7
2
1
9
10
2
1
9
10
USB power select
for USB 3-6 (JP4)
J22
1
2
20
19
1
10
11
20
Square denotes pin 1
JP3
JP8
PS/2 power
select (JP2)
USB power select
for USB 1/2 (JP1)
IDE 1 (J19)
IDE 2 (J20)
2
Hardware Installation
17
PE21-EL
(Supports onboard LAN and Diagnostic LEDs)
1
RESET
SPEAKER
HD-LED
J1
KB
Mouse
Socket 478
CN1
LAN
USB 1
USB 2
COM 1 (J2)
Parallel (J3)
COM 2 (J4)
Game/MIDI (J7)
Line
out
(J5)
Line
in
(J6)
Mic
in
(J8)
+12V power
(ATXP1)
4
3
2
1
VIA
VT8754
CPU FSB select
(JP3 and JP8)
CD-in
(J9)
2
1
9
10
Front
audio (J10)
AUX-in (J11)
AC’97
PCI Standby Power LED
IrDA (J15)
I/O
chip
BIOS
AGP Slot
PCI Slot 1
PCI Slot 2
PCI Slot 3
PCI Slot 4
PCI Slot 5
PCI Slot 6
DIMM Standby
Power LED
CPU fan
(J23)
ATX p ow er
(J24)
DDR 1
DDR 2
DDR 3
VIA
VT8235CD
FDD (J21)
Clear CMOS
(JP6)
Chassis fan (J25)
Wake-On-
LAN (J27)
Wake-On-
Ring (J26)
Battery
USB 3/4
(J17)
USB 5/6 (J18)
PWR-LED
G-SW
ATX-SW
G-LED
Second
chassis fan (J16)
2
1
9
10
2
1
9
10
USB power
select for
USB 3-6 (JP4)
LED 3
LED 2
LED 4
LED 5
J22
1
2
20
19
1
10
11
20
Square denotes pin 1
JP3
JP8
PS/2 power
select (JP2)
USB power select
for USB 1/2 (JP1)
IDE 1 (J19)
IDE 2 (J20)
2
18
Hardware Installation
PE21-EL/A
(Supports onboard LAN, Diagnostic LEDs and
6-channel audio - S/PDIF-in/out and 4-channel audio connectors)
Note:
The illustrations on the following pages are based on the mainboard
that supports onboard LAN.
1
RESET
SPEAKER
HD-LED
J1
KB
Mouse
Socket 478
CN1
LAN
USB 1
USB 2
COM 1 (J2)
Parallel (J3)
COM 2 (J4)
Game/MIDI (J7)
Line
out
(J5)
Line
in
(J6)
Mic
in
(J8)
+12V power
(ATXP1)
4
3
2
1
VIA
VT8754
CPU FSB select
(JP3 and JP8)
CD-in
(J9)
2
1
9
10
Front
audio (J10)
AUX-in (J11)
S/PDIF-
out (J13)
4CH audio (J14)
AC’97
S/PDIF-in
(J12)
PCI Standby Power LED
IrDA (J15)
I/O
chip
BIOS
AGP Slot
PCI Slot 1
PCI Slot 2
PCI Slot 3
PCI Slot 4
PCI Slot 5
PCI Slot 6
DIMM Standby
Power LED
CPU fan
(J23)
ATX power
(J24)
DDR 1
DDR 2
DDR 3
VIA
VT8235CD
FDD (J21)
Clear CMOS
(JP6)
Chassis fan (J25)
Wake-On-
LAN (J27)
Wake-On-
Ring (J26)
Battery
USB 3/4
(J17)
USB 5/6 (J18)
PWR-LED
G-SW
ATX-SW
G-LED
Second
chassis fan (J16)
2
1
7
2
1
9
10
2
1
9
10
USB power
select for
USB 3-6 (JP4)
LED 3
LED 2
LED 4
LED 5
J22
1
2
20
19
1
10
11
20
Square denotes pin 1
JP3
JP8
PS/2 power
select (JP2)
USB power select
for USB 1/2 (JP1)
IDE 1 (J19)
IDE 2 (J20)
2
Hardware Installation
19
2.2 System Memory
Warning:
Electrostatic discharge (ESD) can damage your mainboard, processor,
disk drives, add-in boards, and other components. Perform the
upgrade instruction procedures described at an ESD workstation only.
If such a station is not available, you can provide some ESD
protection by wearing an antistatic wrist strap and attaching it to a
metal part of the system chassis. If a wrist strap is unavailable,
establish and maintain contact with the system chassis throughout
any procedures requiring ESD protection.
DDR 1
DDR 2
DDR 3
The system board is equipped with three 184-pin DDR SDRAM
DIMM (Dual In-line Memory Module) sockets that suppor t 2.5V
DDR SDRAM DIMM. Double Data Rate SDRAM (DDR SDRAM) is
a type of SDRAM that doubles the data rate through reading and
writing at both the rising and falling edge of each clock. This
effectively doubles the speed of operation therefore doubling the
speed of data transfer.
Refer to chapter 1 (System Memory section) for detailed
specification of the memory supported by the system board.
.
.
.
.
.
.
.
.
2
20
Hardware Installation
2.2.1 Installing the DIM Module
A DIM module simply snaps into a DIMM socket on the system
board. Pin 1 of the DIM module must correspond with Pin 1 of the
socket.
1. Pull the “tabs” which are at the ends of the socket to the side.
2. Position the DIMM above the socket with the “notch” in the
module aligned with the “key” on the socket.
3. Seat the module vertically into the socket. Make sure it is
completely seated. The tabs will hold the DIMM in place.
Pin 1
Notch
Key
Tab
Tab
2
Hardware Installation
21
2.3 Jumper Settings for Clearing CMOS Data
Clear CMOS Data - Jumper JP6
If you encounter the following,
a) CMOS data becomes corrupted.
b) You forgot the keyboard, supervisor or user password.
c) You are unable to boot-up the computer system because the
processor’s ratio/clock was incorrectly set in the BIOS.
you can reconfigure the system with the default values stored in the
ROM BIOS.
To load the default values stored in the ROM BIOS, please follow
the steps below.
1. Power-off the system and unplug the power cord.
2. Set JP6 pins 2 and 3 to On. Wait for a few seconds and set JP6
back to its default setting, pins 1 and 2 On.
2-3 On:
Clear CMOS Data
1-2 On: Normal
(default)
Clear CMOS
(JP6)
1
2
3
3
2
1
3
2
1
2
22
Hardware Installation
3. Now power-on the system.
If your reason for clearing the CMOS data is due to incorrect
setting of the processor’s ratio/clock in the BIOS, please proceed
to step 4.
4. After powering-on the system, press <Del> to enter the main
menu of the BIOS.
5. Select the Frequency/Voltage Control submenu and press
<Enter>.
6. Set the “CPU Clock Ratio” or “CPU Clock” field to its default
setting or an appropriate frequency ratio or bus clock. Refer to
the Frequency/Voltage Control section in chapter 3 for more
information.
7. Press <Esc> to return to the main menu of the BIOS setup
utility. Select “Save & Exit Setup” and press <Enter>.
8. Type <Y> and press <Enter>.
2
Hardware Installation
23
2-3 On: 5VDUL power
1-2 On: VCC power
(default)
2.4 Jumper Settings for Selecting the PS/2 Power
Power Select for PS/2 Keyboard/Mouse - Jumper JP2
This jumper is used to select the power of the PS/2 keyboard and
PS/2 mouse.
Note:
If you wish to use the Wake-On-PS/2 Keyboard function, make
sure this jumper is set to “2-3 On”. “PS2KB Wakeup Select”
(“IRQ/Event Activity Detect” field) in the Power Management
submenu of the BIOS must be set accordingly.
3
2
1
3
2
1
1
2
3
PS/2 power
select (JP2)
2
24
Hardware Installation
2.5 Jumper Settings for Selecting the USB Power
2-3 On: 5VDUL power
1-2 On: VCC power
(default)
3
2
1
3
2
1
Power Select for USB 1 and USB 2 (JP1) and
Power Select for USB 3 to USB 6 (JP4)
These jumpers are used to select the power of the USB ports.
Note:
• You can enable or disable the USB ports in the Integrated
Peripherals submenu (“OnChip USB Controller” field) of the
BIOS.
• If you wish to use the Wake-On-USB Keyboard/Mouse
function, make sure this jumper is set to “2-3 On”. “USB
Resume From S3” (“IRQ/Event Activity Detect” field) in the
Power Management submenu of the BIOS must be set to
Enabled.
USB power
select for
USB 3-6 (JP4)
1
2
3
USB power select
for USB 1/2 (JP1)
1
2
3
2
Hardware Installation
25
2.6 Jumper Settings for Selecting the CPU’s Front
Side Bus
CPU Front Side Bus Select - Jumper JP3 and JP8
These jumpers are used to select the front side bus of the
processor installed on the system board.
Important:
Overclocking may result in the processor’s or system’s instability
and is not guaranteed to provide better system performance.
All Off1-2 On 2-3 On
CPU FSB select
(JP3 and JP8)
JP3
JP8
123
Auto
100MHz
133MHz
166MHz
JP3
1-2 On
2-3 On
All Off
All Off
JP8
1-2 On
1-2 On
1-2 On
2-3 On
JP8
123
JP3
JP8
123
JP3
JP8
123
JP3
2
26
Hardware Installation
2.7 Ports and Connectors
ATX Double Deck Ports on PE21-EL and PE21-EL/A
PS/2
Mouse
PS/2
K/B
RJ45
LAN
USB 2/1
COM 1
Parallel GAME/MIDI
Line-
out
Line-inMic-
in
COM 2
PS/2
Mouse
PS/2
K/B
USB 2
USB 1
COM 1 COM 2
GAME/MIDI
Line-
out
Line-inMic-
in
Parallel
ATX Double Deck Ports on PE21-EC and PE21-EC/A
2
Hardware Installation
27
2.7.1 PS/2 Mouse and PS/2 Keyboard Ports
The mainboard is equipped with an onboard PS/2 mouse (Green)
and PS/2 keyboard (Purple) ports - both at location J1 of the ATX
double deck ports of the mainboard. The PS/2 mouse port uses
IRQ12. If a mouse is not connected to this por t, the system will
reserve IRQ12 for other expansion cards.
The Wake-On-PS/2 Keyboard function allows you to use a PS/2
keyboard to wake up the system from the S5 state.
To use this function:
1. JP2 must be set to “2-3 On”. Refer to “Jumper Settings for
Selecting the PS/2 Power” in this chapter.
2. “PS2KB Wakeup Select” (“IRQ/Event Activity Detect” field) in the
Power Management submenu of the BIOS must be set
accordingly. Refer to chapter 3 for more information.
Warning:
Make sure to turn off your computer prior to connecting or
disconnecting a mouse or keyboard. Failure to do so may
damage the mainboard.
J1
.
.
.
.
.
.
.
.
PS/2 Mouse
PS/2 Keyboard
2
28
Hardware Installation
2.7.2 RJ45 Fast-Ethernet Port (PE21-EL and PE21-EL/A
only)
The PE21-EL and PE21-EL/A mainboards are equipped with an
onboard RJ45 fast-ethernet LAN por t at location CN1 of the ATX
double deck ports. It allows the mainboard to connect to a local
area network by means of a network hub. You can enable or disable
the onboard LAN in the Integrated Peripherals submenu (“VIA
OnChip PCI Device” field) of the BIOS.
RJ45 LAN
CN1
2
Hardware Installation
29
2.7.3 Universal Serial Bus Ports
Additional USB Ports (USB 3 to USB 6)
USB 2
USB 1
CN1
USB 3/4
(J17)
USB 5/6
(J18)
2
1
9
10
2
1
10
9
2
1
10
9
2
1
9
10
Pin
1
3
5
7
9
Function
5V_Dul
Data-
Data+
Ground
Key
Function
5V_Dul
Data-
Data+
Ground
Ground
Pin
2
4
6
8
10
2
30
Hardware Installation
The mainboard is equipped with two onboard USB 2.0 (compliant
with USB 1.1) ports (CN1 - Black) located at the ATX double deck
ports of the board.
The system board is also equipped with J17 and J18 for connecting
4 external USB 2.0/1.1 por ts. The USB 2.0/1.1 ports, which are
mounted on a card-edge bracket, will be provided as an option. If
you wish to use the optional USB 2.0/1.1 ports, install the card-edge
bracket to the system chassis then insert the connector that is
attached to the USB 2.0/1.1 por t cables to J17 or J18. The USB
ports’ cable connector can be inserted only if pin 1 of the connector
is aligned with pin 1 of J17 or J18. Now connect the interface cable
connector of your USB 2.0/1.1 device to the USB 2.0/1.1 port that
is on the bracket.
You can enable or disable the USB por ts in the Integrated Peripherals submenu (“OnChip USB Controller” field) of the BIOS.
The Wake-On-USB Keyboard/Mouse function allows you to use a
USB keyboard or USB mouse to wake up a system that is in the
S3 (STR - Suspend To RAM) state.
To use this function:
1. JP1 and JP4 must be set to “2-3 On”. Refer to “Jumper Settings
for Selecting the USB Power” in this chapter.
2. “USB Resume from S3” (“IRQ/Event Activity Detect” field) in the
Power Management Setup submenu of the BIOS must be set to
Enabled. Refer to chapter 3 for more information.
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