Intel D850GB User manual

Intel®Desktop Board
D850GB/ D850GBAL
Quick Reference
This guide is written for technically qualified personnel with experience
installing and configuring desktop boards.
Before You Begin
Warning and Caution..........................................................................3
Safety and Regulatory Notice:............................................................3
Desktop Board Connectors...................................................................4
Supported Components.........................................................................6
Installation Steps
1 Installing the AGP Card Retention Mechanism
(D850GB only).............................................................................. 7
2 Installing the I/O Shield.................................................................9
3 Installing the Desktop Board ........................................................10
4 Installing the Processor Retention Mechanisms............................11
5 Installing the Processor................................................................. 13
6 Applying Thermal Grease to the Processor...................................14
7 Installing the Processor Fan Heatsink........................................... 15
8 Installing the Fan Heatsink Clips..................................................16
9 Installing the Memory Modules.................................................... 17
10 Connecting the Fans .....................................................................18
11 Installing an AGP Card................................................................. 18
12 Attaching IDE Hard Drives with the Ultra ATA-66/100 Cable.... 19
Setting the BIOS Configuration and USB Port 2 Routing
Jumpers ....................................................................................................20
BIOS Setup Program Defaults............................................................. 22
Items on the CD-ROM
x Product warranty
x Intel®Express Installer
x Intel®Desktop Board D850GB/D850GBAL Product Guide
x Software utilities and drivers
x Software license agreement
x Readme file
Part number: A30315-003

2 Intel Desktop Board D50GB/D850GBAL
Quick Reference
Getting Help
View or download product support information from Intel’s World Wide Web
site: http://support.intel.com/support/motherboards/desktop
Documents on the web site include:
x Intel®Desktop Board D850GB Technical Product Specification
x Intel®Desktop Board D850GB Specification Update
If you can’t find the information you need on the Web, contact your point of
purchase. The Intel Web site also includes telephone numbers and billing
charges, if applicable, for Intel customer support.
Intel Corporation (Intel) makes no warranty of any kind with regard to this
material, including, but not limited to, the implied warranties of merchantability
and fitness for a particular purpose. Intel assumes no responsibility for any errors
that may appear in this document. Intel makes no commitment to update nor to
keep current the information contained in this document. No part of this
document may be copied or reproduced in any form or by any means without
prior written consent of Intel.
An Intel®product, when used in accordance with its associated documentation, is
"Year 2000 Capable" when, upon installation, it accurately stores, displays,
processes, provides, and/or receives date data from, into, and between the
twentieth and twenty-first centuries, including leap year calculations, provided that
all other technology used in combination with said product properly exchanges
date data with it.
†Third-party brands and trademarks are the property of their respective owners.
Copyright
¤ 2000, 2001,Intel Corporation. All rights reserved.

Intel Desktop Board D850GB/D850GBAL 3
Quick Reference
Before You Begin
Warning and Caution
WARNING
Disconnect the board’s power supply from its AC power source
before you connect or disconnect cables, or install or remove any
board components. Failure to do this can result in personal injury or
equipment damage. Some circuitry on the desktop board can
continue to operate even though the front panel power switch is off.
CAUTION
Electrostatic discharge (ESD) can damage desktop board components.
Install the board at an ESD-controlled workstation. If such a workstation
is not available, wear an antistatic wrist strap or touch the surface of the
antistatic package before handling the board.
Safety and Regulatory Notice:
See the Intel®Desktop Board D850GB/D850GBAL Product Guide for all
applicable regulatory compliance statements, product certification markings, and
safety and electromagnetic compatibility (EMC) standards and regulations these
desktop boards are compliant with..
Replacement battery warning label provided: Place the label inside the chassis
in an easy-to-see location near the battery but not on the board itself.
Intended uses: This product was evaluated as information technology
equipment (I.T.E) for home or office use when installed into an appropriate
computer chassis. Other end uses or locations may require further evaluation.

4 Intel Desktop Board D50GB/D850GBAL
Quick Reference
Desktop Board Connectors
OM11532
USB
Devices
J8C3
1
3
2-pin alternate
power LED/Sleep
connector
On
Ground
Reset
HD LED
Power LED
IR Module
J9D2
+5V
No
Connection
2
1
16
15
A B C E F
Q
S P
RO M
G
I
J
K
H
L
Z
BB
AA
D
X
W
Y
V
U
T
IRTX
Ground
IRRX
+5V
Line
In
N
continued

Intel Desktop Board D850GB/D850GBAL 5
Quick Reference
Desktop Board Connectors (continued)
A. ADI AD1885 audio codec
(D850GBAL only) O. Diskette drive connector
B. Auxiliary line-in connector
(D850GBAL only) P. Primary IDE connector
C. Legacy CD-ROM connector
(D850GBAL only) Q. Secondary IDE connector
D. ATAPI-style CD-ROM
connector (D850GBAL only) R. USB port 2 routing jumper (D850GB only)
E. AGP connector S. Front panel USB connector
F. Intel®82850 Memory
Controller Hub (MCH) T. Chassis fan connector
G. 12 V processor core voltage
connector U. Battery
H. Chassis fan connector V. BIOS configuration jumper
I. Processor socket W. Wake on LAN†technology connector
J. Processor fan connector X. SCSI LED connector
K. RIMM fan connector Y. Speaker
L. RIMM sockets Z. Intel®82801BA I/O Controller Hub
(ICH2)
M. Power connector AA.PCI bus add-in card connectors
N. Auxiliary power connector BB.Communication and Networking Riser
(CNR) (D850GB only)
CAUTION
Many of the midboard and front panel connectors provide operating
voltage (+5 V DC and +12 V DC, for example) to devices inside the
computer chassis, such as fans and internal peripherals. These
connectors are not overcurrent protected. Do not use these connectors
for powering devices external to the computer chassis. A fault in the load
presented by the external devices could cause damage to the computer,
the interconnecting cables, and the external devices themselves.

6 Intel Desktop Board D50GB/D850GBAL
Quick Reference
Supported Components
Processors
The board supports the following processors:
Processor Type Processor Frequency (GHz) System Bus Frequency (MHz)
Intel®Pentium 4
processor 1.3, 1.4, and 1.5 400
For the latest information on processors supported by the D850GB/D850GBAL
board, refer to the Intel web site at:
http://support.intel.com/support/motherboards/desktop
CAUTION
Failure to use an ATX12V power supply, or not connecting both additional
power supply leads to the D850GB or D850GBAL board may result in
damage to the desktop board.
For more information on the ATX12V power supply, refer to the
Intel Desktop Board D850GB/D850GBAL Product Guide on the
CD-ROM.
Memory Module Requirements
The board has four 2.5 V memory module sockets that support RIMMs
containing Direct Rambus DRAM (RDRAM) devices.
The board supports the following memory features:
x Maximum of 32 Direct Rambus devices per channel
x Memory configurations from 128 MB (minimum) to 2 GB (maximum)
using 128 Mbit or 256 Mbit technology
x PC600 or PC800 compliant RDRAM
x Single- or double-sided RIMM modules
x Serial Presence Detect (SPD) memory only
x ECC and non-ECC support
✏NOTE
For information about vendors that support these memory requirements,
refer to the D850GB link on this Intel web site:
http://support.intel.com/support/motherboards/desktop

Intel Desktop Board D850GB/D850GBAL 7
Quick Reference
Installation Steps
1 Installing the AGP Card Retention Mechanism
(D850GB only)
CAUTION
Install the AGP card retention mechanism (RM) only when using an
AGP card with a retention notch (A) as shown in the figure below. Use of
the RM with an unnotched card may impair video operation. See the
Intel Desktop Board D850GB/D850GBAL Product Guide on the CD-ROM
for RM removal instructions.
OM10592
A

8 Intel Desktop Board D50GB/D850GBAL
Quick Reference
The RM encloses the board’s AGP connector and stabilizes the AGP card.
Place the board (component side up) on a flat, supportive surface, preferably on
the anti-static bag in which the board was shipped in. Follow the steps outlined
below to attach the RM (A) to the AGP connector (B):
1 Locate the AGP connector (J5E1) on the board as shown below. Note
that the board’s silkscreen (C) indicates the correct final position of the
lever (D) on the RM.
OM11536
B
A
C
D
E
2 Position the RM over the AGP connector as shown below.
OM10111
3 Push the lever end of the RM in the direction of the arrow until the two
rearmost tabs (E) spread over the end of the AGP connector.
OM10180
4 Push the free end of the RM over the other end of the AGP connector and
press down evenly on both ends of the RM until all four tabs click
underneath the AGP connector. Do not apply unnecessary pressure to
avoid damaging the board.
OM10181

Intel Desktop Board D850GB/D850GBAL 9
Quick Reference
2 Installing the I/O Shield
The board comes with an I/O shield. When installed in the chassis, the shield
blocks radio frequency transmissions, necessary to pass emissions (EMI)
certification testing, protects internal components from dust and foreign objects,
and promotes correct airflow within the chassis.
Install the I/O shield before installing the board in the chassis. Place the shield
inside the chassis as shown in the following figure. Press the shield into place
so that it fits tightly and securely. If the shield doesn’t fit, obtain a properly-
sized shield from the chassis supplier.
OM11542
D850GB I/O Shield
OM11543
D850GBAL I/O Shield

10 Intel Desktop Board D50GB/D850GBAL
Quick Reference
3 Installing the Desktop Board
CAUTION
Failure to use an ATX12V power supply, or not connecting both additional
power supply leads to the D850GB or D850GBAL board may result in
damage to the desktop board.
For more information on the ATX12V power supply, refer to the
Intel Desktop Board D850GB/D850GBAL Product Guide on the CD-ROM.
✏NOTES
Make sure your chassis supports the Intel Pentium 4 processor. You can
determine this by verifying that the standoffs for the processor retention
mechanism are in the correct location on the chassis.
Do not install the four screws around the processor socket at this time.
Refer to your chassis manual for specific instructions on installing and removing
the board. Secure the board to the chassis standoffs using 10 screws. Insert the
screws in the mounting holes shown in the figure below.
OM11537

Intel Desktop Board D850GB/D850GBAL 11
Quick Reference
4 Installing the Processor Retention Mechanisms
1 The processor retention mechanisms are secured to the board with four
screws supplied by the chassis manufacturer. See the location of the
processor RM holes in the following figure.
OM11538

12 Intel Desktop Board D50GB/D850GBAL
Quick Reference
2 Place the retention mechanisms on the board by aligning the holes in the
RM with the holes in the board. Using the screws provided by the chassis
manufacturer, install the retention mechanisms into the four holes on the
chassis.
OM11539

Intel Desktop Board D850GB/D850GBAL 13
Quick Reference
5 Installing the Processor
Lift the processor socket lever, install the processor so that the first pin (A) is
aligned with the first pin location on the board silk screen, and lower the lever
back to its original position.
OM10633
A

14 Intel Desktop Board D50GB/D850GBAL
Quick Reference
6 Applying Thermal Grease to the Processor
The processor package includes a thermal grease syringe. Apply about half of
the thermal grease from the syringe to the center of the processor surface.
OM10642

Intel Desktop Board D850GB/D850GBAL 15
Quick Reference
7 Installing the Processor Fan Heatsink
Place the fan heatsink on the processor so that the fan cable is facing the right
edge of the board.
OM10634

16 Intel Desktop Board D50GB/D850GBAL
Quick Reference
8 Installing the Fan Heatsink Clips
Install the clip by attaching the opening at both ends of the clip (B) to the tabs
on the RM. Then fasten the side clip (A) to the RM until you hear a click.
Repeat this procedure on the opposite side of the fan heatsink. See step 12 on
page 18 to connect the processor fan cable header to the board processor fan
connector.
OM10643
A
B
B

Intel Desktop Board D850GB/D850GBAL 17
Quick Reference
9 Installing the Memory Modules
CAUTIONS
Insert a Continuity RIMM (CRIMM) in every unused memory socket or the
board will not boot.
High insertion force is required to install the RIMMs. Use caution when
inserting the RIMMs to prevent the board from flexing.
✏ NOTE
RIMMs must be installed in identical pairs (same speed, size, and
density).
Install RIMMs into Bank 0 first. If the desired memory configuration has been
achieved, insert CRIMMs into Bank 1.
If memory is to be installed in bank 1, the RIMM modules to be installed must
be identical in size and density to each other, and match the speed of the RIMM
modules in bank 0. The RIMM modules do not, however, need to match those
in bank 0 in size and density. For example, if bank 0 has two 128 MB RIMMs
of PC800 RDRAM, bank 1 would require PC800 RDRAM also, however, any
other supported RIMM modules such as 64 MB or 192 MB could be used.
1
OM11541
0

18 Intel Desktop Board D50GB/D850GBAL
Quick Reference
10 Connecting the Fans
The following figure shows the location of the fan connectors. If you are
installing a processor with an active fan heatsink, connect the processor’s fan
cable to the board connector labeled J6L1. Connect the chassis fan cables to the
board connectors labeled J3M1, J7M2, and J10A2.
OM111533
Fan 4 J3M1
1
3
Fan 3 J6L1
13
Fan 2 J7M2
13
Fan 1 J10A2
13
11 Installing an AGP Card
✏ NOTE
The D850GB/D850GBAL board is only compatible with 1.5 V AGP cards.
Follow these instructions to install an AGP card if it has a retention notch.
1 Place the AGP card in the AGP connector.
2 Press down on the card until it is completely seated in the connector and
the card retention notch snaps into place below the RM (D850GB only).
3 Secure the card’s metal bracket to the chassis back panel with a screw.

Intel Desktop Board D850GB/D850GBAL 19
Quick Reference
12 Attaching IDE Hard Drives with the Ultra
ATA-66/100 Cable
The Intel®boxed board package includes a 40-contact, 80-conductor IDE cable.
It is capable of connecting two drives to the board. The cable supports the Ultra
ATA-66/100 transfer protocol and is backward compatible with drives using
slower IDE transfer protocols.
The cable will work correctly only when oriented as shown in the figure below.
For correct cable function:
1 Attach the cable end with the single connector (A) to the board.
2 Attach the cable end with the two closely spaced connectors (B) to the
drives.
OM11544
BA

20 Intel Desktop Board D50GB/D850GBAL
Quick Reference
Setting the BIOS Configuration and USB Port 2
Routing Jumpers
CAUTION
Always turn off the power and unplug the power cord from the computer
before changing the jumper. Moving the jumper with the power on may
result in unreliable computer operation.
OM11545
4
1
6
3J8D1
3
1
J8C2