Guide to Features
& Upgrades
Compaq Deskpro EN Series
of Personal Computers
Notice
The information in this guide is subject to change without notice.
COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE
FOR TECHNICAL OR EDITORIAL ERRORS OR OMISSIONS
CONTAINED HEREIN; NOR FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES RESULTING FROM THE
FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL.
This guide contains information protected by copyright. No part of this
guide may be photocopied or reproduced in any form without prior
written consent from Compaq Computer Corporation.
1999, 1998 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
Compaq and Deskpro are registered in the U. S. Patent and Trademark Office.
PREMIERSOUND is a trademark of Compaq Computer Corporation.
Microsoft, MS-DOS, Windows, Windows NT, and other names of Microsoft
products referenced herein are trademarks or registered trademarks of Microsoft
Corporation.
Intel and Pentium are registered trademarks of Intel Corporation. Celeron and
MMX are trademarks of Intel Corporation.
Product names mentioned herein may be trademarks and/or registered
trademarks of their respective companies.
The software described in this guide is furnished under a license
agreement or nondisclosure agreement. The software may be used or
copied only in accordance with the terms of the agreement.
Guide to Features & Upgrades
Compaq Deskpro EN Series of Personal Computers
Fourth Edition (March 1999)
First Edition (April 1998)
Part Number 179146-004
Compaq Computer Corporation
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CONTENTS
preface
Using This Guide
Symbols and Conventions ......................................................................................................... vii
Environmental Commitment .................................................................................................... viii
chapter 1
The Computer at a Glance
Computer Features....................................................................................................................1-1
Desktop Front and Rear Panel Components.............................................................................1-4
Minitower Front and Rear Panel Components ......................................................................... 1-8
Drive Positions ....................................................................................................................... 1-12
Graphics Capabilities..............................................................................................................1-14
Customizing the Monitor Display.....................................................................................1-14
Using Windows 95 and Windows 98..........................................................................1-14
Using Windows NT 4.0 .............................................................................................. 1-15
Audio Subsystem....................................................................................................................1-15
Using the Compaq Enhanced Keyboard.................................................................................1-16
Windows Logo Keys ........................................................................................................ 1-17
Turning Off Your Computer...................................................................................................1-19
chapter 2
Using Network Communications
Connecting to an Ethernet Network ......................................................................................... 2-2
Interpreting the Network Status Lights.....................................................................................2-4
Disabling the Autosensing Capabilities....................................................................................2-4
Installing the Network Drivers ................................................................................................. 2-6
chapter 3
Upgrading the Desktop Computer
Installation Sequence ................................................................................................................ 3-1
When to Reconfigure the Computer ......................................................................................... 3-3
Serviceability Features..............................................................................................................3-3
Removing the Computer Cover .......................................................................................... 3-3
Tilting the Drive Cage ........................................................................................................ 3-5
Raising the Expansion Board Cage.....................................................................................3-6
Sliding Out the System Board Tray .................................................................................... 3-8
Internal Components...............................................................................................................3-10
Contents iii
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Installing Additional Memory ................................................................................................ 3-12
Installing DIMM Modules ................................................................................................ 3-13
Installing an Expansion Board................................................................................................3-14
Removing an Expansion Slot Cover ................................................................................. 3-15
Installing a PCI or ISA Board...........................................................................................3-16
Removing an Expansion Board .............................................................................................. 3-17
Upgrading Graphics Capabilities............................................................................................3-18
Installing Additional Drives ................................................................................................... 3-19
Connecting Drive Signal Cables.......................................................................................3-20
Using the Cable-Select Feature with Ultra ATA Devices ................................................ 3-20
Installing SCSI Devices .................................................................................................... 3-21
Guidelines for Installing Optional SCSI Devices........................................................3-21
Cabling for Optional SCSI Devices ............................................................................ 3-23
Using SCSISelect with SCSI Devices.........................................................................3-24
Removing a Blank Drive Bezel ........................................................................................ 3-25
Installing a CD-ROM or Tape Drive ................................................................................ 3-26
Installing a 3.5-Inch Drive into a 5.25-Inch Drive Bay .................................................... 3-28
Removing a Drive from the Drive Cage.................................................................................3-32
Smart Cover Lock...................................................................................................................3-34
Using the Smart Cover FailSafe Key................................................................................3-34
Installing a Cable Lock...........................................................................................................3-36
Replacing the Battery ............................................................................................................. 3-37
chapter 4
Upgrading the Minitower Computer
Installation Sequence ................................................................................................................ 4-1
When to Reconfigure the Computer ......................................................................................... 4-3
Serviceability Features..............................................................................................................4-3
Removing the Computer Side Panel ................................................................................... 4-3
Raising the Expansion Board Cage.....................................................................................4-4
Sliding Out the System Board Tray .................................................................................... 4-6
Internal Components.................................................................................................................4-8
Installing Additional Memory ................................................................................................ 4-10
Installing DIMM Modules ................................................................................................ 4-11
Installing an Expansion Board................................................................................................4-12
Removing an Expansion Slot Cover ................................................................................. 4-13
Installing a PCI or ISA Board...........................................................................................4-14
Removing an Expansion Board .............................................................................................. 4-15
Upgrading Graphics Capabilities............................................................................................4-16
iv Contents
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Installing Additional Drives ................................................................................................... 4-17
Connecting Drive Signal Cables.......................................................................................4-18
Using the Cable-Select Feature with Ultra ATA Devices ................................................ 4-18
Installing SCSI Devices .................................................................................................... 4-19
Guidelines for Installing Optional SCSI Devices........................................................4-19
Cabling for Optional SCSI Devices ............................................................................ 4-21
Using SCSISelect with SCSI Devices.........................................................................4-22
Removing the Front Bezel ................................................................................................ 4-23
Removing a Blank Drive Bezel ........................................................................................ 4-23
Installing a CD-ROM or Tape Drive ................................................................................ 4-24
Installing a 3.5-Inch Drive into a 5.25-Inch Drive Bay .................................................... 4-27
Removing a Drive from the Drive Cage.................................................................................4-31
Smart Cover Lock...................................................................................................................4-31
Using the Smart Cover FailSafe Key................................................................................4-31
Installing a Cable Lock Provision...........................................................................................4-33
Replacing the Battery ............................................................................................................. 4-35
Removing the Computer Base ................................................................................................ 4-37
appendix A
Specifications ..................................................................................................................................... A-1
appendix B
System Board Jumpers and Switches ............................................................................................. B-1
Index ..................................................................................................................................................... I-1
Contents v
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179146-004
preface
U S I N G THIS GUIDE
This Guide to Features & Upgrades includes general
information about your computer, upgrade information, and
technical specifications.
Symbols and The following format conventions distinguish elements of the
text throughout this guide:
Conventions
When keys must be pressed at the same time, the action is
s
represented by the key names and the plus (+) symbol. For
example, Ctrl+Alt+Delete.
The names of files are presented in uppercase italic type as
s
shown here: FILENAME.
The names of commands, folders, or directories are
s
presented in uppercase type as shown here: COMMAND or
DIRECTORY. Commands that are to be entered at the
system prompt are shown on a separate line.
When you are asked to type something without pressing the
s
Enter key, you are directed to "type" the information.
When you need to type information and press the Enter key,
s
you will be directed to "enter" the information.
When you need to make a selection with a mouse, you will
s
be directed to "select" or "click" the information.
Guide to Features & Upgrades vii
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The following words and symbols mark special messages
throughout this guide:
WARNING: Text set off in this manner indicates that failure to
! follow directions could result in bodily harm or loss of life.
CAUTION: Text set off in this manner indicates that failure to
follow directions could result in damage to equipment or loss of
information.
Text set off in this manner presents clarifying information,
specific instructions, commentary, sidelights, or other points of
information.
Environmental Compaq is committed to making environmentally friendly
products. Your computer was produced in a
Commitment
chlorofluorocarbons (CFC)-free factory. All plastics used in the
product are stamped with material composition to make
recycling more efficient. Reduce, reuse, and recycle are words
to live by at Compaq.
viii Using This Guide
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1
chapter
T H E COMPUTER AT A GLANCE
Computer Features Intel Celeron processor at 300-, 300A-, 333-, or
s
400-MHz; Intel Pentium II processor at 266-, 300-,
333-, 350-, 400-, or 450-MHz; or Intel Pentium III
processor at 450- or 500-MHz
Intel 440BX/PIIX-4E AGPset
s
Intel Pentium II and Pentium III processors include 512-
s
kilobyte write-through, direct-mapped secondary (L2) ECC
(error checking and correcting) cache. Intel Celeron 300
MHz processors include 0-kilobyte L2 cache; Intel Celeron
300A, 333, and 400 MHz processors include 128-kilobyte
L2 cache.
16, 32, 64, or 128 megabytes of synchronous DRAM
s
(SDRAM), expandable to 384 megabytes (select models
include 32 , 64, or 128 megabytes of ECC memory)
Compaq 10/100 TX PCI Intel WOL UTP Controller (select
s
models do not include a network interface controller [NIC])
s ATI RAGE PRO TURBO AGP Graphics (includes
4-megabytes SGRAM); ATI RAGE PRO TURBO AGP 2X
Graphics (includes 4-megabytes SGRAM and is expandable
to 8-megabytes SGRAM, or includes 8-megabytes
SDRAM)
Guide to Features & Upgrades 1-1
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Adaptec 2940 Wide UltraSCSI controller (select models)
s
3.2-GB, 4.3-GB, 6.4-GB, or 10.0-GB Ultra ATA hard drive;
s
or 4.3-GB or 9.1-GB Wide UltraSCSI hard drive
The hard drive is fully partitioned with each partition
being 2.0 GB or less.
32X Max tray-load IDE CD-ROM drive
s
Embedded 16-bit Full Duplex Audio featuring Compaq
s
PREMIERSOUND, and an internal 40 70 mm oval
speaker
High-density, 3.5-inch, 1.44-megabyte diskette drive
s
Desktop chassis includes five expansion slots; minitower
s
chassis includes eight expansion slots
Desktop chassis includes four drive bays; minitower chassis
s
includes five drive bays
Easy serviceability features include an expansion board cage
s
with green lift levers and a slide-out system board. Desktop
models include quick release cover latches and a tilt drive
cage with green drive release latches. Minitower models
include green drive release tabs for easy removal of drives
from the bay.
The Computer at a Glance
1-2
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Intelligent Manageability, including Initial Configuration and
s
Deployment, Asset Tracking and Security, Software Updating
and Management, and Fault Notification and Recovery
Software-controllable Smart Cover Lock
s
Microsoft Windows 95, Microsoft Windows 98, or
s
Microsoft Windows NT Workstation 4.0 operating system
Microsoft Internet Explorer
s
In select geographic regions, models with Microsoft
Internet Explorer 4.0 include a customized Compaq
channel. This channel provides access to technical
support, product information and announcement news,
articles, downloads, and other information.
Compaq-supplied drivers and utilities
s
200-watt continuous power supply, switch-selectable for
s
115 and 230 VAC operation
Compaq Enhanced keyboard
s
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Desktop Front and
Rear Panel
Components
Desktop Front Panel Components
The Computer at a Glance
1-4
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1 Diskette Drive Activity Light Turns on when the diskette drive is reading or saving data.
2 Stereo Headphone Jack Connects headphones to the CD-ROM drive.
3 Headphone Volume Control Adjusts the volume of the CD-ROM drive.
4 Diskette Eject Button Ejects a loaded diskette.
5 CD-ROM Drive Tray Loads a CD-ROM into the drive.
6 CD-ROM Drive Busy Indicator Flashes amber when the drive is reading a CD-ROM.
7 CD-ROM Emergency Eject Allows you to eject a CD-ROM in the event of a power
Hole failure.
8 CD-ROM Eject Button Ejects a CD-ROM from the drive.
9 Dual-State Power Button Switches the computer between suspend and wakeup
modes; can be configured as an on/off button.
: Power-On Light Turns on when power to the computer is turned on and
blinks (optional) in Energy Saver mode.
When the system does not detect the expansion board
cage, this light and the hard drive activity light flash at the
same time and at the same rate.
; Hard Drive Activity Light Turns on when the hard drive is reading or saving data.
When the system does not detect the expansion board
cage, this light and the power-on light flash at the same time
and at the same rate.
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WARNING: To reduce the risk of electric shock or damage to the
! equipment:
s Do not disable the power cord grounding plug. The grounding
plug is an important safety feature.
s Plug the power cord into a grounded (earthed) electrical outlet
that is easily accessible at all times.
s Disconnect power from the computer by unplugging the
power cord from either the electrical outlet or the computer.
Rear Panel Components on the Desktop Models
The Computer at a Glance
1-6
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1 Power Cord Connector Connects the computer to an electrical power outlet.
2 Smart Cover Lock Prevents unauthorized access to the internal components
when the Smart Cover Lock and setup password are
enabled.
3 Microphone Connector Connects a microphone (blue-colored icon).
4 Ethernet RJ-45 Connector Connects the Ethernet network, using an RJ-45 cable.
5 Line-In Audio Connector Connects a device that supplies sound, such as a tape deck
or CD player.
6 Wide UltraSCSI Connector Connects external SCSI devices (select models).
7 Mouse Connector Connects the mouse (green-colored icon).
8 Monitor Connector Connects a monitor.
9 Voltage Select Switch Switches voltage between 115V and 230V to match
geographical requirements.
: Universal Serial Bus (USB) Fully functional plug and play connectors connect the
Connectors computer to any USB peripheral while the computer is
operating.
; Headphone Connector Connects headphones.
< Line-Out Audio Connector Provides connection for externally amplified speakers or for
audio recording.
= Keyboard Connector Connects the keyboard (orange-colored icon).
> Parallel Port Connector Connects a parallel device, such as a parallel printer.
? Serial Connectors Connect serial devices, such as a serial mouse and
scanner.
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Minitower Front and
Rear Panel
Components
Minitower Front Panel Components
The Computer at a Glance
1-8
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1 Diskette Eject Button Ejects a loaded diskette.
2 Diskette Drive Activity Light Turns on when the diskette drive is reading or saving data.
3 CD-ROM Drive Tray Loads a CD-ROM into the drive.
4 Stereo Headphone Jack Connects headphones to the CD-ROM drive.
5 Headphone Volume Control Adjusts the volume of the CD-ROM drive.
6 CD-ROM Emergency Eject Allows you to eject a CD-ROM in the event of a power
Hole failure.
7 CD-ROM Drive Busy Indicator Flashes amber when the drive is reading a CD-ROM.
8 CD-ROM Eject Button Ejects a CD-ROM from the drive.
9 Dual-State Power Button Switches the computer between suspend and wakeup
modes; can be configured as an on/off button.
: Power-On Light Turns on when power to the computer is turned on; blinks
(optional) in Energy Saver mode.
When the system does not detect the expansion board
cage, this light and the hard drive activity light flash at the
same time and at the same rate.
; Hard Drive Activity Light Turns on when the hard drive is reading or saving data.
When the system does not detect the expansion board
cage, this light and the power-on light flash at the same time
and at the same rate.
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WARNING: To reduce the risk of electric shock or damage to the
! equipment:
s Do not disable the power cord grounding plug. The grounding
plug is an important safety feature.
s Plug the power cord into a grounded (earthed) electrical outlet
that is easily accessible at all times.
s Disconnect power from the computer by unplugging the
power cord from either the electrical outlet or the computer.
Rear Panel Components on the Minitower Models
The Computer at a Glance
1-10
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1 Voltage Select Switch Switches voltage between 115V and 230V to match
geographical requirements.
2 Universal Serial Bus (USB) Fully functional plug and play connectors connect the
Connectors computer to any USB peripheral while the computer is
operating.
3 Headphone Connector Connects headphones.
4 Line-Out Audio Connector Provides connection for externally amplified speakers or for
audio recording.
5 Keyboard Connector Connects the keyboard (orange-colored icon).
6 Parallel Port Connector Connects a parallel device, such as a parallel printer.
7 Serial Connectors Connect serial devices, such as a serial mouse and
scanner.
8 Smart Cover Lock Prevents unauthorized access to the internal components
when the Smart Cover Lock and setup password are
enabled.
9 Power Cord Connector Connects the computer to an electrical power outlet.
: Microphone Connector Connects a microphone (blue-colored icon).
; Ethernet RJ-45 Connector Connects the Ethernet network, using an RJ-45 cable.
< Wide UltraSCSI Connector Connects external SCSI devices (select models).
= Line-In Audio Connector Connects a device that supplies sound, such as a tape deck
or CD player.
> Mouse Connector Connects the mouse (green-colored icon).
? Monitor Connector Connects a monitor.
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Drive Positions The desktop model can house up to four mass storage devices.
Desktop Drive Positions
1 Standard, 3.5-inch 1.44-MB diskette drive
2 CD-ROM drive (5.25-inch, half height)
3 Optional CD-ROM drive, diskette drive, tape drive, or hard drive (5.25-inch, half
height)
4 Standard 3.5-inch internal hard drive (Ultra ATA 3.2-, 4.3-, 6.4-, or 10.0-GB; or
Wide UltraSCSI 4.3- or 9.1-GB)
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The minitower model can house up to five mass storage devices
Minitower Drive Positions
1 Standard, 3.5-inch 1.44-MB diskette drive
2 CD-ROM drive (5.25-inch, half height)
3 Optional CD-ROM drive, diskette drive, tape drive, or hard drive (5.25-inch, half
height)
4 Optional CD-ROM drive, diskette drive, tape drive, or hard drive (5.25-inch, half
height)
5 Standard 3.5-inch internal hard drive (Ultra ATA 3.2-, 6.4-, or 10.0-GB, or Wide
UltraSCSI 4.3- or 9.1-GB)
To verify which mass storage devices are installed in your
computer, run Compaq Diagnostics for Windows or the
INSPECT utility. Refer to the Software Reference Guide for
more information.
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Graphics Your computer offers one of two levels of graphics support,
depending on the model:
Capabilities
ATI RAGE PRO TURBO AGP Graphics comes
s
standard with 4 megabytes of SGRAM.
ATI RAGE PRO TURBO AGP 2X Graphics comes
s
standard with 4 megabytes of SGRAM and is
expandable to 8 megabytes of SGRAM, or comes
standard with 8 megabytes of SDRAM.
These controllers are high-performance AGP graphics
controllers, offering 3D graphics support. The quality of the
picture you see depends on the resolution capabilities of your
monitor and the number of colors that the graphics controller
can display.
The graphics controllers support the following resolutions and
maximum number of colors:
Resolution 4 MB SGRAM 8 MB SGRAM 8 MB SDRAM
1600 1200 65,536 16.7 million 16.7 million
1280 1024 16.7 million 16.7 million 16.7 million
1024 768 16.7 million 16.7 million 16.7 million
800 600 16.7 million 16.7 million 16.7 million
640 480 16.7 million 16.7 million 16.7 million
Customizing the Monitor Display
If you choose to customize your monitor display, you can
manually select or change the monitor brand, model, refresh
rates, color, resolution, and power management settings.
Using Windows 95 and Windows 98
1. Click Start, then click Settings.
2. Click Control Panel, then select the Display icon.
3. Click the Settings tab.
4. In the Desktop Area box, drag the Screen slider to the
desired resolution.
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The Desktop slider changes the size of the Windows
desktop. If you set the Desktop size larger than the Screen
size, you can move the Screen to cover different portions
of the Desktop by moving the mouse off the edge of the
Screen, also known as panning.
5. In the Color Palette box, select the number of colors you
want to display.
6. Click the ATI Adjustment tab, then select Refresh Rate to
change the refresh rate.
7. Click OK for the changes to take effect.
Using Windows NT 4.0
1. Click Start, then click Settings.
2. Click Control Panel, then select the Display icon.
3. Click the Settings tab.
4. In the Desktop Area box, drag the Display slider to the
desired resolution.
5. In the Color Palette box, select the number of colors you
want to display.
6. Select List All Modes and choose a mode from the list of
valid modes. Click OK for the changes to take effect.
7. Click Test to test the changes made to the display settings.
8. Click Yes if the test bitmap was properly displayed.
9. Click OK for the changes to take effect.
Audio Subsystem The Embedded 16-bit Full Duplex Audio subsystem, featuring
Compaq PREMIERSOUND, provides a completely integrated
audio solution. This 5-watt audio subsystem delivers
exceptional sound output and clarity.
The audio system can record, compress, and play voice,
Windows sounds, and music with various multimedia software
applications. This allows you to integrate, or mix, voice
messages and music directly into your computer. Using a
microphone, you can record sounds as data on the hard drive.
This sound data may be used in many ways; for example, you
can enhance presentation data with voice and music.
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In addition, the audio chip incorporates a 3D effects Spatializer
processor, which, when used with external stereo speakers,
expands the sound field to create a 3D sound environment.
Using the Compaq The keyboard lights and special function keys are shown and
described in the following illustration and table.
Enhanced Keyboard
Compaq Enhanced Keyboard Components
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1 Ctrl Used in combination with another key, its effect depends on the application
software you are using.
2 Windows Used to open the Start menu in Microsoft Windows 95. Used in combination with
Logo* other keys to perform other functions. (See following table.)
3 Alt Used in combination with another key, its effect depends on the application
software you are using.
4 Application* Used (like the right mouse button) to open pop-up menus in a Microsoft Office
application. May perform other functions in other software applications.
5 Editing keys Includes the following: Insert, Home, Page Up, Delete, End, and Page Down.
NOTE: Holding down Ctrl+Alt while pressing Delete restarts your computer.
6 Num Lock Indicates whether the Num Lock feature is on or off.
light
Flashes when system memory is not present or is incompatible.
7 Caps Lock Indicates whether the Caps Lock feature is on or off.
light
Flashes when a graphics controller is not present or is incorrectly initialized.
8 Scroll Lock Indicates whether the Scroll Lock feature is on or off.
light
Flashes when there is a system board hardware failure.
*Keys available in select geographic regions.
Diagnostic lights do not flash on USB keyboards.
Windows Logo Keys
You may use the Windows Logo keys in combination with other
keys to perform certain functions in Windows 95 and Windows
98, as shown in the following table:
Windows logo key + F1 Displays a pop-up menu for the selected object.
Windows logo key + Tab Activates the next Taskbar button.
Windows logo key + E Launches Explore My Computer.
Windows logo key + F Launches Find Files.
Windows logo key + Ctrl+F Launches Find Computer.
Windows logo key + M Minimizes all open applications.
Shift+Windows logo key + M Undoes Minimize All.
Windows logo key + R Displays Run dialog box.
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The keyboard has feet on the bottom to tilt the keyboard to a
comfortable typing angle.
Keyboard Tilt Feet
The Computer at a Glance
1-18
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Turning Off Your To properly turn off your computer, click Shut Down on the
Start menu. The computer will automatically shut down.
Computer
In Windows NT Workstation 4.0, the power button always
functions as a power switch. In the default configuration of
Windows 95 and Windows 98, however, pressing the power
button does not turn off the power, but causes the computer to
enter a low-power state. This allows you to quickly power
down, without closing applications, and to quickly return to the
same operational state without any data loss.
If the power button is pressed and held in for four
seconds, power to the computer will turn off completely.
To reconfigure the power button to work in On/Off mode,
run Computer Setup. (See the Software Reference Guide
for instructions.)
WARNING: Before you open the computer cover for any reason,
! be sure to disconnect the power cord from the wall outlet, and
allow the internal system components to cool before touching.
Doing this will reduce the risk of personal injury from electrical
shock and/or hot surfaces.
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2
chapter
U S I N G NETWORK COMMUNICATIONS
Deskpro models with preinstalled network interface controllers
(NIC) and network device drivers are network ready. Select
models do not include a NIC.
The Compaq 10/100 TX PCI Intel WOL UTP Controller
automatically senses the data throughput speed of the network,
10Base-T or 100Base-TX, and configures the controller
appropriately.
100Base-TX operation requires the use of Category 5
UTP cable with an RJ-45 network connection.
The controller also features Remote Wakeup support, which
allows the system administrator to turn on power to a client
computer from a remote location, through the use of supported
PC LAN management tools.
CAUTION: If you experience network problems, or problems with
starting your computer, check to ensure that the Remote Wakeup
cable is connected to the NIC board and to the expansion board
cage. If this cable is disconnected, the system will not operate
reliably.
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Remote Wakeup support is available only when using an
RJ-45 network connection.
For more information on Remote Wakeup, refer to the
Software Reference Guide, or to the online Remote
Management Administrators Guide. The Remote
Management Administrators Guide is included with the
Remote Management Administration Tools, and is
available on the Support Software CD for Compaq
Desktop, Portable, and Workstation Products or at the
Compaq Web Site at www.compaq.com.
Connecting to an 1. Using the network cable appropriate for your network,
connect one end of the network cable to the main
Ethernet Network
network connection.
2. Connect the other end of the cable to the network
connector on your computer.
3. Ensure that both connections are secure.
The following illustrations show the position of the
network connector on the rear panel of the computer.
Using Network Communications
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Attaching a Network Cable to a Network Connector on the Desktop Computer
Attaching a Network Cable to a Network Connector on the Minitower Computer
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Interpreting the The network interface controller has three network status lights
near the RJ-45 connector:
Network Status
Lights LNK light illuminates when the system is physically
s
connected to an active network.
ACT light illuminates when the computer detects
s
network activity. When the system is connected to a
highly used network, the activity light will remain on
almost constantly.
100TX light illuminates during 100-Mbs operation.
s
If Remote Wakeup is enabled, the link and activity lights will
remain functional even when power to the computer is turned
off.
Disabling the Your network controller automatically senses if the attached
network supports 10 Mbs or 100 Mbs and configures itself
Autosensing
accordingly. This process of determining the maximum network
Capabilities operating speed is known as autosensing. The computer begins
autosensing whenever it loses a valid network link, for example,
if the cable is disconnected.
In addition to determining the network operating speed, the
computer determines if full-duplex is supported. Full-duplex
systems can transmit and receive information on the network
simultaneously. Half-duplex systems cannot transmit and
receive simultaneously. The different modes of operation are:
100Base-TX, full-duplex
s
100Base-TX, half-duplex
s
10Base-T, full-duplex
s
10Base-T, half-duplex
s
Using Network Communications
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If necessary, you can disable the autosensing capabilities and
force the system to operate in one mode only.
Using Microsoft Windows 95 or Windows 98,
1. Select the Network icon, located in the Control Panel.
2. Select the Compaq 10/100 TX PCI Intel WOL UTP
Controller.
3. Select the Advanced Properties tab.
4. Select Media Speed and change the value from Automatic
to 10 Mb/sec or 100 Mb/sec, depending on the capabilities
of your network.
5. Select Duplex Settings and change the value from Auto
Duplex Detect to Full-Duplex or Half-Duplex, depending
on the capabilities of your network.
6. Exit the Network control application.
7. You will be prompted to restart your computer in order for
the changes to take effect.
Using Microsoft Windows NT Workstation,
1. Select the Compaq CPQSET icon, located in the Control
Panel.
2. Select the Setting button.
3. Select Network Speed and change the value from Auto to
10 Mbs or 100 Mbs, depending on the capabilities of your
network.
4. Select Duplex Settings and change the value from Auto to
Full or Half, depending on the capabilities of your network.
5. Select OK to exit the Setting.
6. Select OK to exit Compaq CPQSET.
7. You need to restart your computer in order for the changes
to take effect.
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Installing the The device drivers in the network software enable the computer
to communicate with the network.
Network Drivers
Device drivers are supplied for Windows 95, Windows
98, or Windows NT Workstation, depending on the
computer model. If you are using another operating
system, device drivers may be installed from diskettes
included with the network operating system or are
available from Compaq. If reinstallation ever becomes
necessary, use the Compaq Restore CD.
Using Network Communications
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3
chapter
U P G R A D I N G THE DESKTOP
COMPUTER
This chapter explains how to remove the computer cover and
install the following optional equipment upgrades:
Additional memory
s
Expansion board
s
Additional graphics memory
s
Optional drive
s
Cable lock
s
Replacement battery
s
This chapter also includes information about when to
reconfigure the computer to ensure that it recognizes the newly
installed equipment.
Installation It is very important that you follow this sequence of steps to
ensure the proper installation of any optional equipment.
Sequence
1. If you have locked the Smart Cover Lock, use Computer
Setup to unlock the lock and disable the cover removal
sensor.
For more information about Computer Setup, refer to the
Software Reference Guide.
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2. If the computer is already on, turn it off and disconnect the
power cord from the wall outlet.
WARNING: To reduce the risk of personal injury from electrical
! shock and/or hot surfaces, be sure to disconnect the power cord
from the wall outlet, and allow the internal system components to
cool before touching.
WARNING: To reduce the risk of electrical shock, fire, or damage
! to the equipment, do not plug telecommunications/telephone
connectors into the network interface controller (NIC) receptacles.
CAUTION: Static electricity can damage the electronic
components of the computer or optional equipment. Before
beginning these procedures, ensure that you are discharged of
static electricity by briefly touching a grounded metal object. Refer
to the Safety, Care & Regulatory Information guide.
3. Open the computer by removing its outside cover. Refer to
"Removing the Computer Cover" in this chapter for
instructions.
4. Install any optional equipment. Refer to the applicable
sections or the documentation provided with the optional
equipment for instructions.
5. Replace the computer cover.
6. Turn on the monitor, computer, and any devices you want
to test.
7. Reconfigure the computer, if necessary. Refer to the
Software Reference Guide for instructions about using
Computer Setup.
8. If you normally lock the Smart Cover Lock, use Computer
Setup to relock the lock and enable the cover removal
sensor.
9. Test the computer (optional) using the TEST utility.
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When to System configuration is the process of specifying the devices
and programs that make up a computer system. When you add
Reconfigure the
or remove optional equipment, you must reconfigure the
Computer computer to recognize these changes.
Windows 95 and Windows 98 automatically recognize all plug
and play devices installed. However, if the device is not a plug
and play device or is not installed properly, follow these
instructions:
1. Go to the Control Panel.
2. Select the Add New Hardware icon.
3. Follow the instructions on the screen.
Serviceability The Compaq Deskpro EN Series of Personal Computers
includes features that make it easier to upgrade or service your
Features
computer.
Removing the Computer Cover
The quick release cover latches, located on each side of the front
bezel, allow easy removal of the computer cover without the use
of tools or thumbscrews.
WARNING: Before removing the computer cover, ensure that the
! computer is turned off and that the power cord is disconnected
from the electrical outlet.
If you have not already done so, you will need to remove
the green shipping thumbscrew from the center of the rear
panel before removing the cover.
1. If you have locked the Smart Cover Lock, use Computer
Setup to unlock the lock and disable the cover removal
sensor.
2. Turn off the computer and any external devices.
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3. Disconnect the power cord from the power outlet.
4. Press in the cover latches on the sides of the desktop
computer toward the front of the computer.
5. Slide the cover forward about 1-inch (2.5-cm), then lift it
up and off the unit.
Removing the Desktop Computer Cover
CAUTION: After replacing the cover, be sure the green cover
latches are securely latched before lifting the computer.
The configuration label located inside the computer cover
provides additional expansion slot and switch setting
information.
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Tilting the Drive Cage
The tilt drive cage allows access to all drive bays for easy
installation of additional drives, requiring no drive rails or
brackets. With the drive cage tilted out from the chassis, you can
easily connect the drive power and signal cables.
When installing optional drives, you must install guide
screws to ensure the drive will line up correctly in the
drive cage. Compaq has provided extra guide screws,
installed in the front of the computer chassis, under the
front bezel.
WARNING: Before removing the computer cover, ensure that the
! computer is turned off and that the power cord is disconnected
from the electrical outlet.
1. If you have locked the Smart Cover Lock, use Computer
Setup to unlock the lock and disable the cover removal
sensor.
2. Turn off the computer and any external devices.
3. Disconnect the power cord from the power outlet.
4. Remove the computer cover.
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5. Grasp the top of the tilt drive cage and rotate it to its
upright position.
Tilting the Drive Cage to an Upright Position
Raising the Expansion Board Cage
The expansion board cage, with green lift levers, allows quick
removal of expansion boards. In most cases, you will not need
to completely remove the expansion board cage from the
chassis.
WARNING: Before removing the computer cover, ensure that the
! computer is turned off and that the power cord is disconnected
from the electrical outlet.
1. If you have locked the Smart Cover Lock, use Computer
Setup to unlock the lock and disable the cover removal
sensor.
2. Turn off the computer and any external devices.
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3. Disconnect the power cord from the power outlet.
4. Remove the computer cover.
5. Tilt the drive cage to its upright position.
6. Lift the two green levers on the top of the expansion board
cage to raise the cage away from the system board. Be sure
the green levers are in the locked position.
Raising the Expansion Board Cage
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To reconnect the expansion board cage to the system
board, first ensure that the system board tray is fully
installed in the chassis. Then, push down on the cage
gently to ensure that the green lever latches are in
position; and lower the green levers to the original
position to lock the cage in place.
Sliding Out the System Board Tray
The slide-out system board tray allows you to quickly remove
the system board, without using tools.
WARNING: Before removing the computer cover, ensure that the
! computer is turned off and that the power cord is disconnected
from the electrical outlet.
1. If you have locked the Smart Cover Lock, use Computer
Setup to unlock the lock and disable the cover removal
sensor.
2. Turn off the computer and any external devices.
3. Disconnect the power cord from the power outlet.
4. Remove the computer cover.
5. Raise the expansion board cage by lifting and locking the
two green levers. You do not need to remove the cage from
the chassis.
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6. Grasp the back edge of the system board tray and slide it
straight out of the chassis.
Sliding Out the System Board Tray
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Internal
Components
Internal Components in Desktop Models
Expansion Boards in Desktop Models
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The position of the expansion board cage in this
illustration is for demonstration purposes only. Be sure to
rest the expansion board cage upside down rather than on
either side of the cage.
1 Power supply
2 Internal hard drive
3 CD-ROM drive
4 Diskette drive
5 Processor
6 Internal speaker
7 Smart Cover Lock
8 Smart Cover Sensor
9 Embedded audio connectors
: System board
; Graphics controller
< Dual-inline memory module (DIMM) sockets
= Network interface controller (select models)
> Wide UltraSCSI controller (select models)
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Installing Additional The computer comes with 16, 32, 64, or 128 megabytes of
synchronous dynamic random access memory (SDRAM) dual
Memory
inline memory modules (DIMMs) installed and supports up to
384 MB of memory. The memory sockets on the system board
can be populated with 16-, 32-, 64-, or 128-MB DIMMs. Self-
refresh DIMMs are required on all models.
For proper system operation, the DIMMs must be industry
standard 168-pin, 66-MHz or 100MHz unbuffered SDRAM
DIMMs, depending on the model. If the system bus speed is
100 MHz, the use of 100-MHz DIMMs is required. (Run
Compaq Computer Setup to determine your system bus speed;
see the Software Reference Guide for instructions.) The
SDRAM DIMMs must support CAS Latency 2 or 3 (CL = 2 or
CL = 3). They must also contain the mandatory Joint Electronic
Device Engineering Council (JEDEC) Serial Presence Detect
(SPD) information. DIMMs constructed with x4 SDRAM are
not supported; the system will not start using unsupported
DIMMs. DIMM upgrade kits are available as options from
Compaq.
The system board includes three memory module slots.
However, one of these memory module slots is used to hold the
standard memory module. You must replace the preinstalled
memory module, if it is not a 128-megabyte module, with a 128-
megabyte memory module to achieve maximum memory of 384
megabytes.
CAUTION: Your DIMM sockets have gold metal contacts. When
upgrading your memory, it is important to use DIMMs with gold
(not tin-lead) metal contacts to prevent corrosion and/or oxidation
resulting from having incompatible metals in contact with each
other.
CAUTION: Static electricity can damage the electronic com-
ponents of the computer or optional boards. Before beginning
these procedures, ensure that you are discharged of static
electricity by briefly touching a grounded metal object. Refer to the
Safety, Care, and Regulatory Information guide for more
information.
CAUTION: When handling a memory module, be careful not to
touch any of the contacts. Doing so may damage the module.
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Installing DIMM Modules
1. If you have locked the Smart Cover Lock, use Computer
Setup to unlock the lock and disable the cover removal
sensor.
2. Turn off the computer and any external devices, then
disconnect the power cord from the power outlet.
3. Remove the computer cover and locate the DIMM sockets.
4. Open both latches 1 of the DIMM socket, and insert the
memory module 2 into the socket.
Begin by installing a module into the socket nearest the
preinstalled module, and install the modules following the
numerical order of the sockets.
A memory module can be installed in only one way. Match
the notch on the module with the tab on the memory
socket. Push the module down into the socket, ensuring
that the module is fully inserted and properly seated 3.
Installing a DIMM Module
5. Repeat step 4 for any additional modules that you want to
install.
6. Replace the computer cover.
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7. If you normally lock the Smart Cover Lock, use Computer
Setup to relock the lock and enable the cover removal
sensor.
Installing an Your computer contains expansion slots, as follows:
Expansion Board
Expansion Slots in the Desktop Expansion Board Cage
1 PCI/ISA (Peripheral Component Interconnect/Industry
Standard Architecture) shared expansion slots
2 PCI expansion slots
The graphics controller resides in the AGP slot on the
system board.
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Removing an Expansion Slot Cover
To remove an expansion slot cover, follow these steps:
1. Raise the expansion board cage by lifting and locking the
two green levers. You do not need to remove the cage from
the chassis.
2. Locate the correct vacant slot in the expansion board cage.
3. Remove the screw at the side of the expansion slot, then
remove the expansion slot cover from the slot as illustrated.
You will need to slide the system board tray backward a
short distance to access the screws for the first and second
slots.
Removing a Screw and Expansion Slot Cover
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Installing a PCI or ISA Board
To install a PCI or ISA expansion board, complete the following
steps:
1. Raise the expansion board cage by lifting and locking the
two green levers. You do not need to remove the cage from
the chassis.
2. Remove the expansion slot cover.
You will need to slide the system board tray backward a
short distance to access the screws for the first and second
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