DFI NB60-EL User manual

NB60-EL/EC
NB76-EA/EC
Rev. A+
System Board
User’s Manual
57200211

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. Further, 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.
© 00 . All Rights Reserved.
Trademarks
Windows® 98 SE, Windows® ME, Windows® 000, Windows NT®
4.0 and Windows® XP are registered trademarks of Microsoft
Corporation. Intel® and Pentium® 4 are registered trademarks of
Intel Corporation. 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 servicing. After installation or servicing,
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 try 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.
. Shielded interface cables must be used in order to comply with
the emission limits.

Notice
This user’s manual contains detailed information about the system
board. 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 system board 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”.
System Board
This user’s manual is for the NB60-EL, NB60-EC, NB76-EA and
NB76-EC system boards. The differences between these boards are
shown below.
NB60-EL/EC Intel 845GL
ADD slot
“EL” suppor ts onboard LAN
NB76-EA/EC Intel 845G
AGP slot
“EA” supports onboard LAN and Smart I/O

Table of Contents
Chapter 1 - Introduction
1.1 Features and Specifications..................................................................................
1. Package Checklist.........................................................................................................
Chapter 2 - Hardware Installation
.1 System Board Layout ..........................................................................................
. System Memory...........................................................................................................
.3 Jumper Settings for Clearing CMOS Data........................................
.4 Jumper Settings for Wake-On-Keyboard/Mouse..................................
.5 Jumper Settings for Wake-On-USB Keyboard.......................................
.6 Jumper Settings for Selecting the CPU’s Front Side Bus......
.7 Jumper Settings for USB 6................................................................................
.8 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. 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 CPU Frequency/Voltage Control.............................................
3.1.9 Load Fail-Safe Defaults.....................................................................
3.1.10 Load Optimized Defaults..............................................................
3.1.11 Set Supervisor Password...............................................................
3.1.1 Set User Password..............................................................................
3.1.13 Save & Exit Setup.................................................................................
3.1.14 Exit Without Saving..............................................................................
7
15
67
67
71
76
79
87
91
93
95
97
97
98
98
99
99
16
0
4
6
8
9
30

Introduction
1
6
107
107
Chapter 4 - Supported Softwares
4.1 Desktop Management Interface................................................................
4. Hardware Doctor....................................................................................................
4.3 Intel INF Update Utility for Windows 98SE/ 000/
ME/XP.................................................................................................................................
4.4 Intel Application Accelerator for Windows......................................
4.5 Intel Graphics Drivers for Windows 98SE/NT/
ME/ 000/XP.................................................................................................................
4.6 Audio Drivers and Software Application.........................................
4.7 Onboard LAN Drivers for Windows.................................................
4.8 USB .0 Driver..........................................................................................................
4.9 Winbond Smart I/O Drivers.......................................................................
4.10 Winbond SmartCard Application............................................................
4.11 Microsoft DirectX 8.1 Driver.......................................................................
4.1 Drivers and Utilities Installation Notes...............................................
Appendi A - System Error Messages
A.1 POST Beep.......................................................................................................................
A. Error Messages..............................................................................................................
Appendi B - Troubleshooting
B.1 Troubleshooting Checklist....................................................................................
100
103
103
104
104
105
105
105
105
106
106
106
109

1
Introduction
7
1.1 Features and Specifications
1.1.1 Features
Chipset
• NB60-EL/EC
Intel® 845GL chipset
- Intel® 845GL Graphics Memor y Controller Hub (GMCH)
- Intel® 8 801DB I/O Controller Hub (ICH4)
• NB76-EA/EC
Intel® 845G chipset
- Intel® 845G Graphics Memor y Controller Hub (GMCH)
- Intel® 8 801DB I/O Controller Hub (ICH4)
Processor
The system board is equipped with Socket 478 for installing a
Pentium® 4 processor.
• Intel® Pentium® 4 processor (478-pin)
• Supports up to . GHz CPU speed
• 400/533MHz system data bus (NB76-EA/EC)
400MHz system data bus (NB60-EL/EC)
System Memory
• Two 184-pin DDR SDRAM DIMM sockets
• .5V unbuffered PC1600 (DDR 00) / PC 100 (DDR 66)
DDR SDRAM DIMM
• Supports maximum of GB system memory using 64Mbit,
1 8Mbit, 56Mbit or 51 Mbit technology
- Double-sided x16 DDR SDRAM DIMM is not supported
Chapter 1 - Introduction
Density Width
Single/Double
184-pin DDR
64 Mbit
X8
SS/DS
64/128MB
X16
SS/DS
32MB/N
Density 128 Mbit
X8
SS/DS
128/256MB
X16
SS/DS
64MB/N
256 Mbit
X8
SS/DS
256/512MB
X16
SS/DS
128MB/N
512 Mbit
X8
SS/DS
512/1024MB
X16
SS/DS
256MB/N

Introduction
1
8
Expansion Slots
The NB60-EC/EL system board is equipped with 1 ADD slot, 6 PCI
slots (1 shared with CNR slot) and 1 CNR slot.
The NB76-EA/EC system board is equipped with 1 AGP slot, 6 PCI
slots (1 shared with CNR slot) and 1 CNR slot.
The AGP slot only supports 1.5V AGP 4x (1066MB/sec. bandwidth)
add-in cards. AGP is an interface designed to support high
performance 3D graphics cards for 3D graphics applications. It
handles large amounts of graphics data with the following features:
• Pipelined memory read and write operations that hide memory
access latency.
• Demultiplexing of address and data on the bus for nearly 100
percent efficiency.
The ADD slot is used for installing an ADD (AGP Digital Display)
card.
CNR (Communication and Networking Riser) is an interface that
supports multi-channel audio, V.90 analog modem, phone-line based
networking or 10/100 Ethernet based networking riser board.
Onboard Graphics Feat res
• Graphics memory
- Shares 51 K/1MB/8MB of the system memory in DOS
mode
- Uses Dynamic Video Memory Technology (DVMT) in
Windows mode
• Graphics controller
- Core frequency of 00MHz
- 350MHz integrated 4-bit RAMDAC
- Analog display up to 048x1536 @ 60Hz refresh
- 3D setup and render engine - Discrete, Triangles, Strips and
fans
- Per pixel perspective corrected texture mapping
- Software DVD at 30fps, full screen

1
Introduction
9
• D graphics features
- Optimized 56-bit BLT engine
- 3 -bit alpha blended cursor
- Programmable 3-color transparent cursor
• 3D graphics features
- 00 megapixels/sec fill rate
- Maximum 3D resolution: 1600x1 00x3 @ 85Hz
- Flat and Gouraud shading
- 16- and 4-bit Z-buffering and 16- and 4-bit W-buffering
- Vertex and programmable pixel fogging and
atmospheric effects
- Double and triple render buffer
• Software drivers
- Windows® 98SE/ 000/ME/XP
- Windows NT® 4.0
Onboard A dio Feat res
• 0-bit stereo full-duplex codec with independent variable
sampling rate
• High quality differential CD input
• True stereo line level outputs
• S/PDIF-in/out interface
• 6-channel audio output
Onboard LAN Feat res (NB60-EL and NB76-EA only)
• Uses Realtek RTL8100 fast ethernet controller
• Integrated IEEE 80 .3, 10BASE-T and 100BASE-TX compatible
PHY
• 3 -bit PCI master interface
• Integrated power management functions
• Full duplex support at both 10 and 100 Mbps
• Supports IEEE 80 .3u auto-negotiation
• Supports wire for management
Onboard Integrated Media Reader - Smart I/O (NB76-EA only)
• Supports Security Application Smart Card interface
• Supports two most promising compact storage - Memory Stick
interface and Secure Digital Memory Card interface

Introduction
1
10
Compatibility
• Microsoft PC ’98 compliant
• PCI . , CNR 1.0 “A” type and AC ’97 compliant
• Intel AGP version .0
ATX Do ble Deck Ports (PC 99 color-coded connectors)
• 4 USB .0/1.1 ports
• 1 RJ45 LAN port (NB60-EL and NB76-EA only)
• 1 NS16C550A-compatible DB-9 serial port
• 1 DB-15 VGA port
• 1 DB- 5 parallel port
• 1 mini-DIN-6 PS/ mouse port
• 1 mini-DIN-6 PS/ keyboard port
• 3 audio jacks: line-out, line-in and mic-in
Connectors
• 1 connector for additional external USB .0/1.1 ports
• 1 connector for 1 external serial por t
• 1 connector for an external game/MIDI por t
• 4 internal audio connectors (CD-in, AUX-in, Video-in and TAD)
• 1 4-channel audio output connector
• 1 S/PDIF-in connector
• 1 S/PDIF-out connector
• 1 connector for IrDA interface
• IDE connectors
• 1 floppy drive interface supports up to two .88MB floppy
drives
• 3 ATX power supply connectors
• 1 Wake-On-LAN connector
• 1 Wake-On-Ring connector
• CPU fan, chassis fan and second fan connectors
• 1 opened chassis alarm connector
• 1 Smart Card interface (NB76-EA only)
• 1 Memor y Stick interface (NB76-EA only)
• 1 Secure Digital Memory Card interface (NB76-EA only)

1
Introduction
11
PCI B s Master IDE Controller
• Two PCI IDE interfaces support up to four IDE devices
• Supports ATA/33, ATA/66 and ATA/100 hard drives
• PIO Mode 4 Enhanced IDE (data transfer rate up to 14MB/sec.)
• Bus mastering reduces CPU utilization during disk transfer
• Supports ATAPI CD-ROM, LS-1 0 and ZIP
IrDA Interface
The system board is equipped with an IrDA connector for wireless
connectivity between your computer and peripheral devices.
USB Ports
The system board supports USB .0 and USB 1.1 ports. USB
allows data exchange between your computer and a wide range of
simultaneously accessible external Plug and Play peripherals.
BIOS
• Award BIOS, Windows® 98SE/ 000/ME/XP Plug and Play
compatible
• Supports SCSI sequential boot-up
• Flash EPROM for easy BIOS upgrades
• Supports DMI .0 function
Desktop Management Interface (DMI)
The system board comes with a DMI .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 part 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.

Introduction
1
12
1.1.2 System Health Monitor Functions
The system board is capable of monitoring the following “system
health” conditions.
• Monitors CPU/system temperature and overheat alarm
• Monitors 5VSB/VBAT/1.5V/3.3V/5V/±1 V/CPU voltages and
failure alarm
• Monitors the fan speed of CPU fan, chassis fan and second fan;
and failure alarm
• Automatic chassis fan and second fan on/off control
• Read back capability that displays temperature, voltage and fan
speed
• Opened chassis alarm
Refer to the “PC Health Status” section in chapter 3 and the
“Hardware Doctor” section in chapter 4 for more information.
1.1.3 Intelligence
A tomatic Chassis/Second Fan Off
The chassis fan and second fan will automatically turn off once the
system enters the Suspend mode.
D al F nction Power B tton
Depending on the setting in the “Soft-Off By PWR-BTTN” 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 and “Resume On Ring” 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

1
Introduction
13
Wake-On-LAN
The Wake-On-LAN function is applicable only when you are using a
LAN add-in card that has the same function. It allows the network
to remotely wake up a Soft Power Down (Soft-Off) PC. Your LAN
card must support the remote wakeup function. Refer to “Wake-On-
LAN Connector” in chapter and “Resume On LAN” in the Power
Management Setup section in chapter 3 for more information.
Important:
The 5VSB power source of your power supply must support
≥ 720mA
Wake-On-Keyboard/Wake-On-Mo se
This function allows you to use the keyboard or PS/ mouse to
power-on the system. Refer to “Jumper Settings for Wake-On-
Keyboard/Wake-On-Mouse” in chapter and “Keyboard/Mouse
Power On” (“Onboard Super IO Device” field) in the Integrated
Peripherals section in chapter 3 for more information.
Important:
• The power button will not function once a keyboard
password has been set in the “KB Power On Password”
field of the Integrated Peripherals submenu You must type
the correct password to power-on the system If you forgot
the password, power-off the system and remove the
battery Wait for a few seconds and install it back before
powering-on the system
• The 5VSB power source of your power supply must
support ≥ 720mA
Wake-On-USB Keyboard
The Wake-On-USB Keyboard function allows you to use a USB
keyboard to wake up a system that is in the S3 (STR - Suspend To
RAM) state. Refer to “Jumper Settings for Wake-On-USB Keyboard”
in chapter and “USB KB Wake-Up From S3” in the Power
Management Setup section in chapter 3 for more information.

Introduction
1
14
Important:
• If you are using the Wake-On-USB Keyboard 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 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 system board allows your system to
automatically power-on on the set date and time. Refer to “Resume
By Alarm” in the Power Management Setup section in chapter 3 for
more information.
ACPI STR
The system board 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 Plug-and-Play with operating systems that support OS Direct
Power Management. Currently, only Windows® 98SE/ 000/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® 98SE/ 000/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.
Important:
The 5VSB power source of your power supply must support
≥ 1A

1
Introduction
15
AC Power Fail re 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” (“Onboard Super
IO Device”) in the Integrated Peripherals section in chapter 3 for
more information.
Vir s Protection
Most viruses today destroy data stored in hard drives. The system
board is designed to protect the boot sector and partition table of
your hard disk drive.
1.2 Package Checklist
The system board package contains the following items:
The system board
A user’s manual
One card-edge bracket mounted with a serial port and game/
MIDI port
One card-edge bracket mounted with 1 S/PDIF-in connector
and 1 S/PDIF-out connector
This bracket is optional in the NB60-EL/EC system board
package.
One IDE cable for ATA/33, ATA/66 or ATA/100 IDE drives
One 34-pin floppy disk drive cable
One “Main Board Utility” CD
If any of these items are missing or damaged, please contact your
dealer or sales representative for assistance.

2
16
Hardware Installation
2.1 System Board Layout
Chapter 2 - Hardware Installation
NB60-EC
(Uses Intel® 845GL chipset)
KB
Mouse
CN4
COM 1
(CN2)
Parallel (CN6)
VGA (CN1)
Wake-On-KB/Mouse
(JP1)
+12V power
(ATXP1)
4
3
2
1
CN3
USB 1
USB 2
USB 3
USB 4
CN7
Chassis
open (J9)
Line-out
Line-in
Mic-in
CN5 Game/
MIDI (J6)
12
15
1
2
9
COM 2
(J13)
Wake-On-Ring (J12)
I/O
chip
IrDA (J11)
AC’97
TAD (J7)
AUX-in (J3)
Video-in (J5)
CD-in (J8)
4CH audio (J10)
S/PDIF-in (J4)
Front audio (J2)
S/PDIF-out (J1)
J2
J1 J4
J7 J10
PCI Standby Power LED
3.3VSB Standby for PCI (JP2)
J3 J5 J8
Socket 478
DDR SDRAM
DIMM 1
DDR SDRAM
DIMM 2
Intel
845GL
GMCH
Intel
ICH4 Clear
CMOS
(JP7)
Auxiliary power
(ATXP2)
Wake-On-
LAN (J23)
Chassis
fan (J25)
Battery
CPU fan
(J18) Second
fan (J19)
ATX main
power (PL1)
DIMM Standby
Power LED
FDD
(J21)
IDE 2
(J22) IDE 1
(J24)
Firmware
Hub
USB 6 select
(JP5, JP6) JP5
JP6
USB5&6
(J14)
J20
PWR-LED
G-SW
SPEAKER
G-LED
HD-LED
ATX-SW
ADD Slot
PCI Slot 1
PCI Slot 2
PCI Slot 3
PCI Slot 4
PCI Slot 5
PCI Slot 6
CNR Slot
Square denotes pin 1
ADD Warning LED
Wake-On-USB KB
for USB 1/2/3/4 (JP9)
Wake-On-
USB KB for
USB 5/6 (JP8)
RESET
Diagnostic LEDs
(LEDs 3-6)
Power LED
(LED 7)

2
Hardware Installation
17
NB60-EL
(Uses Intel® 845GL chipset and supports onboard LAN)
KB
Mouse
CN4
COM 1
(CN2)
Parallel (CN6)
VGA (CN1)
Wake-On-KB/Mouse
(JP1)
+12V power
(ATXP1)
4
3
2
1
CN3
USB 1
USB 2
LAN
USB 3
USB 4
CN7
Chassis
open (J9)
Line-out
Line-in
Mic-in
CN5 Game/
MIDI (J6)
12
15
1
2
9
I/O
chip
IrDA (J11)
AC’97
TAD (J7)
AUX-in (J3)
Video-in (J5)
CD-in (J8)
4CH audio (J10)
S/PDIF-in (J4)
Front audio (J2)
S/PDIF-out (J1)
J2
J1 J4
J7 J10
PCI Standby Power LED
3.3VSB Standby for PCI (JP2)
J3 J5 J8
Realtek
RTL8100
Socket 478
DDR SDRAM
DIMM 1
DDR SDRAM
DIMM 2
Intel
845GL
GMCH
Intel
ICH4 Clear
CMOS
(JP7)
Auxiliary power
(ATXP2)
Wake-On-
LAN (J23)
Chassis
fan (J25)
Battery
CPU fan
(J18) Second
fan (J19)
ATX main
power (PL1)
DIMM Standby
Power LED
FDD
(J21)
IDE 2
(J22) IDE 1
(J24)
Firmware
Hub
USB 6 select
(JP5, JP6) JP5
JP6 J20
PWR-LED
G-SW
RESET
SPEAKER
G-LED
HD-LED
ATX-SW
ADD Slot
PCI Slot 1
PCI Slot 2
PCI Slot 3
PCI Slot 4
PCI Slot 5
PCI Slot 6
CNR Slot
Square denotes pin 1
CN3
Wake-On-USB KB
for USB 1/2/3/4 (JP9)
COM 2
(J13)
Wake-On-Ring (J12)
ADD Warning LED
USB5&6
(J14)
Wake-On-
USB KB for
USB 5/6 (JP8) Diagnostic LEDs
(LEDs 3-6)
Power LED
(LED 7)

2
18
Hardware Installation
NB76-EA
(Uses Intel® 845G chipset and supports onboard LAN and Smart I/O)
KB
Mouse
CN4
COM 1
(CN2)
Parallel (CN6)
VGA (CN1)
Wake-On-KB/Mouse
(JP1)
+12V power
(ATXP1)
4
3
2
1
CN3
USB 1
USB 2
LAN
USB 3
USB 4
CN7
Chassis
open (J9)
Line-out
Line-in
Mic-in
CN5 Game/
MIDI (J6)
12
15
1
2
9
I/O
chip
IrDA (J11)
AC’97
TAD (J7)
AUX-in (J3)
Video-in (J5)
CD-in (J8)
4CH audio (J10)
S/PDIF-in (J4)
Front audio (J2)
S/PDIF-out (J1)
J2
J1 J4
J7 J10
PCI Standby Power LED
3.3VSB Standby for PCI (JP2)
J3 J5 J8
Realtek
RTL8100
Socket 478
DDR SDRAM
DIMM 1
DDR SDRAM
DIMM 2
Intel
845G
GMCH
Intel
ICH4
CPU FSB
select (JP4)
Clear
CMOS
(JP7)
Auxiliary power
(ATXP2)
Wake-On-
LAN (J23)
Chassis
fan (J25)
Battery
CPU fan
(J18) Second
fan (J19)
ATX main
power (PL1)
DIMM Standby
Power LED
FDD
(J21)
IDE 2
(J22) IDE 1
(J24)
Firmware
Hub
W831518
6
1
10
5
MS (J16)
SD (J15)
SC (J17)
USB 6 select
(JP5, JP6) JP5
JP6 J20
PWR-LED
G-SW
RESET
SPEAKER
G-LED
HD-LED
Square denotes pin 1
ATX-SW
AGP Slot
PCI Slot 1
PCI Slot 2
PCI Slot 3
PCI Slot 4
PCI Slot 5
PCI Slot 6
CNR Slot
CN3
Wake-On-USB KB
for USB 1/2/3/4 (JP9)
COM 2
(J13)
Wake-On-Ring (J12)
AGP Warning LED
USB5&6
(J14)
Wake-On-
USB KB for
USB 5/6 (JP8)
Diagnostic LEDs (LEDs 3-6)
Power LED (LED 7)
(LEDs 3-6)
(LED 7)

2
Hardware Installation
19
Note:
he illustrations on the following pages are based on the system
board that supports onboard LAN.
NB76-EC
(Uses Intel® 845G chipset)
KB
Mouse
CN4
COM 1
(CN2)
Parallel (CN6)
VGA (CN1)
Wake-On-KB/Mouse
(JP1)
+12V power
(ATXP1)
4
3
2
1
CN3
USB 1
USB 2
USB 3
USB 4
CN7
Chassis
open (J9)
Line-out
Line-in
Mic-in
CN5 Game/
MIDI (J6)
12
15
1
2
9
I/O
chip
IrDA (J11)
AC’97
TAD (J7)
AUX-in (J3)
Video-in (J5)
CD-in (J8)
4CH audio (J10)
S/PDIF-in (J4)
Front audio (J2)
S/PDIF-out (J1)
J2
J1 J4
J7 J10
PCI Standby Power LED
3.3VSB Standby for PCI (JP2)
J3 J5 J8
Socket 478
DDR SDRAM
DIMM 1
DDR SDRAM
DIMM 2
Intel
845G
GMCH
Intel
ICH4 Clear
CMOS
(JP7)
Auxiliary power
(ATXP2)
Wake-On-
LAN (J23)
Chassis
fan (J25)
Battery
CPU fan
(J18) Second
fan (J19)
ATX main
power (PL1)
DIMM Standby
Power LED
FDD
(J21)
IDE 2
(J22) IDE 1
(J24)
Firmware
Hub
USB 6 select
(JP5, JP6) JP5
JP6 J20
PWR-LED
G-SW
RESET
SPEAKER
G-LED
HD-LED
ATX-SW
AGP Slot
PCI Slot 1
PCI Slot 2
PCI Slot 3
PCI Slot 4
PCI Slot 5
PCI Slot 6
CNR Slot
CPU FSB
select (JP4)
Square denotes pin 1
CN3
Wake-On-USB KB
for USB 1/2/3/4 (JP9)
COM 2
(J13)
Wake-On-Ring (J12)
AGP Warning LED
USB5&6
(J14)
Wake-On-
USB KB for
USB 5/6 (JP8) Diagnostic LEDs
(LEDs 3-6)
Power LED
(LED 7)

2
20
Hardware Installation
2.2 System Memory
Warning:
Electrostatic discharge (ESD) can damage your system board,
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.
The system board is equipped with two 184-pin DDR SDRAM
DIMM (Dual In-line Memory Module sockets that support 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.
DDR SDRAM
DIMM 1 DDR SDRAM
DIMM 2