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.
1996 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
Compaq, Deskpro
Registered U. S. Patent and Trademark Office.
Microsoft, MS-DOS, and Windows are registered trademarks of Microsoft Corporation.
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.
Product names mentioned herein may be trademarks and/or registered trademarks of their
respective companies.
Maintenance & Service Guide
Compaq Deskpro 2000 Series of Personal Computers
First Edition (September 1996)
Part Number 243064-001
Spare Part Number 243211-001
Compaq Computer Corporation
CPS
preface
Symbols and Conventions..........................................................................................................ix
This
reference when servicing the the Compaq Deskpro 2000 Series of Personal Computers.
Compaq Computer Corporation reserves the right to make changes to the Compaq
Deskpro 2000 Series of Personal Computers without notice.
Symbols and Conventions
The following words and symbols mark special messages throughout this guide:
is a troubleshooting guide that can be used for
WARNING:
!
warning could result in bodily harm or loss of life.
CAUTION:
in damage to equipment or loss of data.
Text set off in this manner presents clarifying information, specific instructions,
✎
commentary, sidelights, or other points of information.
The following format conventions distinguish elements of the text throughout this
guide:
Drive letters that are not in command lines are presented in uppercase type as
■
shown here: drive A.
Directory names that are not in command lines are presented in uppercase type as
■
shown here: DIRECTORY.
The file names are presented in uppercase italic type as shown here:
■
The names of commands are presented in lowercase as shown here:
■
a:\install.
Commands that are to be entered at the system prompt may be shown on a separate
■
line.
Text set off in this manner indicates that failure to follow directions in the
Text set off in this manner indicates that failure to follow directions could result
FILENAME
install,
or
.
When you need to type information without pressing
■
"type" the information.
When you need to type information
■
the information.
and
press
Enter,
Enter,
you are directed to "enter"
you are directed to
Prefaceix
Technician Notes
WARNING:
!
this equipment. All troubleshooting and repair procedures are detailed to allow only
subassembly/module-level repair. Because of the complexity of the individual boards and
subassemblies, no one should attempt to make repairs at the component level or
to make modifications to any printed wiring board. Improper repairs can create a safety
hazard. Any indication of component replacement or printed wiring board modifications may
void any warranty or exchange allowances.
CAUTION:
(7.62 cm) of clearance on the front and back of the computer.
WARNING:
!
operation, plug the AC power cord into a properly grounded electrical outlet only.
Only authorized technicians trained by Compaq should attempt to repair
To properly ventilate the computer system, you must provide at least 3 inches
The computer is designed to be electrically grounded. To ensure proper
System Serial Number
The serial number is displayed on the right-hand side of the computer, near the front,
and near the I/O ports on the rear of the computer.
For the purpose of AssetControl, the serial number is embedded in the CMOS on the
system board.
Locating Additional Information
The following documentation is available to support the computer:
Compaq Reference Guide
■
Compaq Dictionary
■
Compaq Quick Setup
■
Compaq QuickFind,
■
Compaq Safety & Comfort Guide
■
Compaq Service Advisories and Bulletins
■
Compaq Service Quick Reference Guide
■
Compaq Technical Reference Guide
■
Illustrated Parts Map
■
Technical Training Guides
■
(online document)
card
a subscription reference service
(poster)
xPreface
chapter
P
RODUCT DESCRIPTION
This chapter describes the model offerings and features of the Compaq Deskpro 2000 Series of Personal
Computers.
1
Figure 1-1.
Compaq Deskpro 2000 Series Personal Computer
Compaq Deskpro 20001-1
1.1 Compaq Deskpro 2000 Series of Personal Computer Models
The Compaq Deskpro 2000 Series of Personal Computers are available in both Desktop and Minitower
configurations described in the following sections.
*Not all models are available in all geographic regions.
**Matrox MGA Millennium Graphics
†Cirrus Logic 5436
Hard
Drive
CDROMMemory
Maximum
MemoryCacheGraphics
Compaq Deskpro 20001-3
1.2 Features
Feature Summary
The Compaq Deskpro 2000 Series of Personal Computers have the following standard features:
■
Pentium processors running at speeds ranging from 100 to 200 megahertz or a Pentium Pro
processor with speeds of 180 to 200 megahertz
■
256-kilobyte secondary (L2) cache module on select Pentium models (optional on other models)
■
256-kilobyte secondary (L2) cache integrated into the processor chip on Pentium Pro models
■
Peripheral Components Interconnect (PCI) chipset used for PCI/ISA, memory, and peripheral
control
■
Super I/O controller (integrates a serial port, parallel port, diskette drive interface, real-time clock,
CMOS RAM, and mouse and keyboard controller)
■
PCI and ISA peripheral connectors on the expansion riser board
■
8-, 16-, and 32-megabyte extended data out (EDO) dynamic random access memory (DRAM)
standard; expandable to 128 or 192 megabytes of DRAM installed in single inline memory modules
(SIMMs)
■
BIOS in a flash memory device supports PCI auto-configuration
■
Desktop chassis includes expansion slots for up to five expansion boards
❏
Two dedicated PCI slots (one half-length and one full-length)
❏
Two dedicated ISA-bus slots (one half-length and one full-length)
❏
One "combination" slot for either a PCI or an ISA expansion board
■
Minitower chassis includes expansion slots for up to five expansion boards
❏
Two dedicated full-length PCI slots
❏
Two dedicated ISA-bus slots (one half-length and one full-length)
❏
One "combination" slot for either a PCI or an ISA expansion board
■
200-watt continuous power supply, switch-selectable for 115 and 230 VAC operation, is used for
both desktop and minitower models
■
One RS-232C–compatible 9-pin serial connector
■
One multimode, 25-pin enhanced parallel connector
■
One USB connector on Pentium Pro models
1-4Product Description
■
Five drive bays on desktop models:
❏
One external 3.5-inch, one-third height diskette drive bay
❏
One internal 3.5-inch, one-third height drive bay
❏
Two external 5.25-inch, one-half height drive bays (or one full-height drive)
❏
One internal 5.25-inch hard drive bay (one-third height or 3.5-inch hard drive with a special
bracket)
■
Five drive bays on minitower models:
❏
One external 3.5-inch, one-third height diskette drive bay
❏
One internal 3.5-inch, one-third height drive bay
❏
Three external 5.25-inch, one-half height drive bays (or one full-height drive)
■
One enhanced IDE (EIDE) hard drive installed: hard drive sizes range from 630 megabytes to 2.5
gigabytes, depending on geographic location. 1.62 GB is the largest drive available in EMEA.
The 2.5 gigabyte hard drive is partitioned into two, equally sized logical drives.
✎
■
Drive fault prediction on all hard drives
■
One 1.44-megabyte, 3.5-inch high-density diskette drive installed
■
One 8X IDE CD-ROM drive installed on select models
■
1- to 2-megabyte graphics controller installed, depending on the model
■
Compaq SpaceSaver Keyboard, featuring the Microsoft Windows-specific keys
■
Mouse
■
Keyboard and mouse connectors on the back panel
■
Internal piezo speaker mounted on system board
■
Intelligent Manageability and security features, including password and cable lock provision
■
Microsoft Windows 95, Microsoft Windows 3.1 and MS/DOS, Microsoft Windows NT
Workstation 3.51, or Microsoft Windows NT Workstation 4.0 operating system software
■
Compaq Diagnostics and Configuration utilities, support software, and device drivers
Compaq Deskpro 20001-5
1.3 System Design
This section presents a design overview and functional descriptions of the key components of the
Compaq Deskpro 2000 Series of Personal Computers. All replaceable components are identified in
Chapter 3, and removal/replacement instructions are presented in Chapter 5.
1.3.1Design Overview
The desktop models of the Compaq Deskpro 2000 Series of Personal Computers have a conventional
design that uses a pan-type chassis to house the system board, expansion cards, power supply, and mass
storage devices. The chassis is supplemented by a riser board attached to the riser brace. The riser board
provides a mounting location for the expansion cards.
All internal components are accessible when the hood, held in place by two thumbscrews, is removed.
The front bezel is mounted to the front of the chassis. Torx T-15 screws are used throughout the system
except for the power supply switch mounting bracket, which uses T-10 screws.
The system board is easily removed from the side of the chassis after the hood and riser board are
removed. Two mounting screws secure the riser board to the riser brace. Four mounting screws are used
on the Pentium and five screws on the Pentium Pro to secure the system board to the chassis. In
addition, the I/O bracket is mounted to the system board and is spared that way.
The riser board mounts perpendicular to the system board. Expansion boards are installed horizontally
into the riser board. A single screw attaches each expansion board to the rear panel of the chassis.
The power supply is mounted in the right rear corner of the chassis. The power supply is held in place
by five Torx screws, two mounted internally and three that are installed through the rear panel of the
chassis.
The minitower models’ chassis is designed to house the system board, riser board, option cards, power
supply, and mass storage devices. The use of a riser brace to hold the riser board, and any expansion
boards installed, allows for easy access to the system board. The power supply is mounted in the top of
the unit.
All internal components are immediately accessible when the side panel, held in place with three
thumbscrews, is removed. The front bezel is a separate assembly that mounts to the front of the chassis.
The tray-mounted system board is easily removed by taking off the side panel, removing the riser brace,
and then pulling the tray assembly from the chassis. The system board is spared installed in the tray.
Detailed descriptions of the system components are presented in the sections that follow.
1-6Product Description
1.3.2System Board
The desktop and minitower models of the Compaq Deskpro 2000 Series of Personal Computers use two
basic system board configurations, either a Pentium- or a Pentium Pro–based board. The desktop units
have the I/O panel mounted to the system board and are spared with the I/O panel attached. On the
minitower, the system board is attached to a sliding tray and is spared with the tray.
1.3.3Processor
The Pentium-based system boards run at processor speeds of 100MHz to 200MHz.
The Pentium Pro-based system boards run at processor speeds of 180MHz and 200MHz.
1.3.4System Memory
The system supports base (conventional) and extended memory. Operating systems such as MS-DOS,
OS/2, UNIX, and all application programs use base memory. For better performance, Windows NT,
OS/2, and UNIX, as well as many MS-DOS applications, use extended memory.
The computers ship standard with 60-ns EDO tin-lead (SnPb) SIMMs installed and supports up to 128
megabytes of memory (Pentium models) or 192 megabytes of memory (Pentium Pro models). Either
Extended Data Out (EDO) random access memory (RAM) or Fast Page Mode (FPM) dynamic random
access memory (DRAM) modules may be used. If EDO and FPM modules are combined in the
computer, they must be as matched pairs. For example, two identical EDO modules may be used with
two identical FPM modules.
The SIMM sockets on all system boards in this series of computers can be populated with 4-, 8-, 16-, or
32-MB SIMMs in matched pairs. SIMM sockets on the system boards must be populated in pairs of
equal size in sequential slots. The SIMMs for the system boards must be 60 ns or 70 ns. Refer to
Chapter 5, “Removal and Replacement Procedures,” for information on how to upgrade system
memory.
The Pentium-based system boards accommodate a total of four SIMMs.
The Pentium Pro-based system boards accommodate a total of six SIMMs.
SIMMs with tin-lead pins must be used for memory upgrades.
✎
System memory speed will be configured on a bank-by-bank basis allowing each bank to run at its
✎
optimum speed.
1.3.5Cache Memory
Cache memory is very fast memory used for temporarily storing data for fast access by the processor.
The faster the processor, the more need there is for temporary data storage. One 256-kilobyte writeback, direct mapped secondary (L2) cache module is installed on the Pentium system board. Cache is
standard on models with a speed of 120 megahertz or higher. Cache is optional on lower speed
processors. A 256-kilobyte write-back, four-way, set associative secondary (L2) cache is integrated into
the processor on Pentium Pro models.
Compaq Deskpro 20001-7
1.3.6Graphics Controllers
The purpose of a graphics controller is to generate the text and graphics images for the monitor screen.
The quality of the picture you see depends on the resolution of the monitor and the number of colors
that can be displayed. High resolution graphics with many colors require that the graphics controller
have its own memory system. The computer comes with one of three graphics controllers:
■
The Cirrus Logic 5436 PCI performance graphics controller comes standard with 1 megabyte of
EDO DRAM, which can be upgraded to 2 megabytes of EDO DRAM.
■
The Cirrus Logic 5446 PCI performance graphics controller comes standard with 1 megabyte of
EDO DRAM, which can be upgraded to 2 megabytes of EDO DRAM.
■
The Matrox MGA Millennium graphics controller comes standard with 2 megabytes of Windows
random access memory (WRAM), which can be upgraded to 4 or 8 megabytes of WRAM.
Supported screen resolutions for each of the above controllers are listed in Chapter 8, "Specifications".
1.3.7IDE Peripheral Interface
The onboard PCI chipset provides a high-speed, 32-bit PCI/IDE interface, which supports the
following:
■
Up to four PCI/IDE hard drives on the PCI bus
■
Enhanced Mode 3 and Mode 4 support
■
Logical block addressing (LBA) of hard drives larger than 528 megabytes
■
Extended cylinder head sector (ECHS) translation modes
■
ATAPI devices (such as CD-ROMs) on both IDE interfaces
1.3.8System I/O
The onboard I/O controller integrates the functions for the serial and parallel ports, diskette drives, and
the keyboard. This component provides support for the following:
■
Multimode bidirectional parallel port
❏
Standard mode: Centronics-compatible operation
❏
High-speed mode with support for an enhanced capabilities port (ECP) and enhanced parallel
port (EPP)
■
One RS-232C compatible 9-pin serial port
■
One USB Connector (Pentium Pro models only)
■
Integrated real-time clock
■
A 242-byte, battery-backed CMOS RAM
■
Integrated 8042-compatible keyboard controller
■
Industry-standard diskette drive controller that supports:
❏
720-kilobyte and 1.44-megabyte 3.5-inch drives (at 135 tracks per inch)
❏
360-kilobyte and 1.2-megabyte 5.25-inch drives
1-8Product Description
1.3.9System BIOS
The system BIOS provides ISA and PCI compatibility. Contained in a flash memory device on the
system board, the BIOS provides the power-on self-test (POST) and the PCI and IDE autoconfiguration utilities.
The system BIOS is always “shadowed.” Shadowing allows any BIOS routines to be executed from fast
32-bit onboard DRAM instead of from the slower 8-bit flash device.
PCI Auto-Configuration
The PCI auto-configuration utility works in conjunction with the Setup program to support using PCI
expansion boards in the system. When you turn on the computer power after installing a PCI board, the
BIOS automatically configures interrupts, I/O space, and PCI devices. If problems arise or you wish to
reconfigure the device, refer to Chapter 7, “Compaq Utilities,” which explains how to use the Setup
program. The PCI auto-configuration program complies with version 2.1 of the PCI BIOS specification.
IDE Auto-Configuration
If you install an IDE drive into the computer, the IDE auto-configuration utility automatically detects
and configures the drive for operation in the computer. This utility eliminates the need to run the Setup
program after you install an IDE drive.
ISA Plug and Play Capability
ISA Plug and Play capability provides auto-configuration of Plug and Play ISA boards and resource
management for legacy (non Plug and Play) ISA boards when used with Compaq’s Computer Setup for
F10
Windows (CSW) utility (or
Windows 95.
Setup) or a Plug and Play–compatible operating system like Microsoft’s
BIOS Upgrades
Because the BIOS is stored in a flash memory device, you can easily upgrade the BIOS without having
to disassemble the system. The flash upgrade process can be accomplished by running a utility from a
diskette, a hard drive, or over a network.
The section on Flash ROM in Chapter 7, “Compaq Utilities,” explains how to run the BIOS upgrade
utility. For information about the latest BIOS update, contact an authorized Compaq service provider.
1.3.10 Expansion Slots
The computer has two dedicated 16-bit ISA-compatible slots, two dedicated PCI-compatible expansion
slots, and one “combination slot” that can be used by either a PCI or an ISA board. For more
information about expansion slots and installing expansion boards, see Chapter 5, “Removal and
Replacement Procedures.”
1.3.11 Power Supply
The desktop and the minitower computers share a 200-watt rated continuous power supply to provide
power for onboard resources, expansion boards, and drives. A switch on the computer back panel sets
the power supply to operate at:
■
115 VAC (in the range of 100-120 VAC; 5.0 A maximum input current)
■
230 VAC (in the range of 200-240 VAC; 3.0 A maximum input current)
For power supply output ratings, see Chapter 8, “Specifications.”
Compaq Deskpro 20001-9
1.3.12 Diskette Drive Interface
The diskette drive interface is 8477 compatible and supports two storage devices (diskette or tape
drive).
1.3.13 Serial Port
The serial port is RS-232C compatible.
1.3.14 Parallel Port
The following parallel support modes are supported:
■
SPP (Bidirectional Standard Parallel Port)
■
EPP (Enhanced Parallel Port)
■
ECP (Extended Capabilities Port)
1.3.15 System Security
The system BIOS provides a power-on password option that is enabled through the Setup program. The
computer includes a cable lock provision that makes it possible to lock the computer cover in place to
prevent unauthorized access to the system jumpers and other internal components (a padlock is not
included). For more information on this and additional security features, refer to Chapter 2,
“Troubleshooting,” and Chapter 7, “Compaq Utilities.”
1.3.16 Keyboard/Mouse Controller
The onboard 8042 I/O controller stores the keyboard and mouse controller code. Connectors for the
keyboard and mouse are located on the back panel.
1.3.17 Real-Time Clock and CMOS RAM
The onboard I/O controller provides a real-time clock and CMOS RAM. Chapter 5 provides
information about installing a new battery.
You can set the time for the clock and the CMOS values by using the Setup program described in
Chapter 7, “Compaq Utilities.”
1.3.18 Power Supply Fan
For cooling, a fan is attached to the power supply at the rear of the computer chassis. This fan draws air
in through the front of the chassis and exhausts air out the rear of the chassis. This provides air flow
across the processor.
1.3.19 Speaker
An internal piezo speaker is mounted on the system board. The speaker provides audible error code
information (beep codes) during the power-on self-test (POST) and as required by the software. See
Chapter 2, “Troubleshooting,” for beep code information.
1-10Product Description
1.3.20 Software
During initial Setup, the user is required to select the operating system to be installed. The following
operating systems are shipped with the computer:
■
Windows 95: Pentium-based computers only
■
Windows 3.1 and MS/DOS: Pentium-based computers only
■
Windows NT 3.51: Pentium Pro-based computers only
Preloaded Software
The following Compaq software is preloaded on the computer:
■
Microsoft Windows 3.1 or Windows 95 installation, one of which the user is required to choose
during initial setup. This is only available on Pentium-based computer models.
■
Partition-based Compaq Diagnostics utilities
■
Compaq Diagnostics for Windows
■
Compaq support software and device drivers
■
Online Safety & Comfort Guide
■
Intelligent Manageability
■
Power Management with Energy Saver features
■
Security Management
Windows NT Workstation 3.51
The Windows NT 3.51 operating system software is provided on a compact disc (CD) with Pentium
Pro–based computers for easy installation along with the following Compaq software:
■
Compaq Diagnostics for Windows NT
■
Compaq support software and device drivers
■
Online Safety & Comfort Guide
1.3.21 Ordering Additional Operating System Drivers
If you plan to run any of the following operating systems on the computer, you must install the
corresponding Compaq device drivers and utilities before attempting to use the computer:
■
IBM OS/2 or NetWare
■
Microsoft Windows NT Workstation 3.51 on computers that are not shipped with that operating
system
■
A version of Microsoft Windows 95 or Microsoft Windows NT Workstation that is different from
the version included with the computer
Compaq Deskpro 20001-11
There are two methods to order copies of suitable device drivers and utilities:
■
Order the Support Software CD for Compaq Desktop Products. This compact disc contains the
latest device drivers, utilities, and flashable ROM images needed to run MS-DOS, Windows 3.1,
Windows 95, Windows NT Workstation 3.51, IBM OS/2, and NetWare on the Compaq commercial
desktop product.
■
Purchase backup diskettes.
The Support Software CD can be purchased in either of two ways:
■
A single CD-ROM that gives one-time access to the latest support software (North America only).
■
A yearly subscription that delivers up to 12 monthly CD-ROMs.
The annual subscription provides continuous access to the latest developments, while the single CDROM offers information as it is needed.
When calling Compaq to place an order, be sure to have the serial number of the computer
✎
available. The serial number is located on the right-hand side of the computer cover and also on the
rear of the chassis. This number is necessary for all purchases.
1.3.22 Intelligent Manageability
Intelligent Manageability includes:
AssetControl
■
Fault management
■
Security management
■
AssetControl
AssetControl allows a system administrator to view, track, and store information about the desktop
computer. This capability is available locally with the Diagnostics for Windows utility or remotely with
third-party applications. The following information is provided:
System serial number
■
Asset tag
■
Monitor serial number (with monitor support)
■
Firmware revision levels
■
System board revision level
■
Name and version of Compaq-developed software
■
1-12Product Description
Fault Management
Fault management is available locally at power-on or through the Diagnostics for Windows utility.
When this feature is used with the appropriate management software and operating system, system
administrators and users can monitor the computer for impending component or subsystem failure. This
includes:
■
Hard drive fault prevention tracking
■
Accurate contact information
1.3.23 Security Management
Security management features are designed into the Compaq Deskpro Personal Computer. The
following features prevent unauthorized access to critical data and prevent theft of the computer:
■
Cable lock provision allows the user to physically secure the computer hardware to protect against
theft.
■
Diskette boot control prevents the computer from being booted from a diskette.
■
Diskette drive control allows disabling of the diskette drive.
■
Diskette write control prevents unauthorized writing of data to a diskette.
■
Flash ROM lock prevents unauthorized changes to the flash ROM.
■
Keyboard password allows the computer to boot up but prevents data input until the password is
entered.
■
Parallel interface control prevents transfer of data through the parallel interface connector.
■
Power-on password prevents unauthorized persons from booting up the computer.
■
QuickLock/QuickBlank allows the user to lock the keyboard and/or blank the screen.
■
Serial interface control prevents transfer of data through the serial interface connector.
■
Setup Password prevents unauthorized changes to the system configuration.
Compaq Deskpro 20001-13
1.4 Desktop Computer Features
The Compaq Deskpro 2000 Series of Personal Computers ships with a mouse and keyboard. A Compaq
color monitor or other compatible monitor, which is also required to operate the computer, does not
ship with the computer.
1.4.1Front Panel Controls and LEDs
The operator controls and LEDs located on the front panel of the computer are identified and described
below.
Figure 1-2.
Power Switch and Front Panel Lights
Table 1-3
Lights and Controls
Ref.ComponentFunction
➊
➋
➌
➍
➎
The lights on the computer provide information about computer operation. When the power switch 3 is
turned on, the power-on light
When the hard drive light
the disk or storing information on the disk.
Diskette Drive Activity LightTurns on when the diskette drive is reading or writing.
Diskette Eject ButtonEjects a loaded diskette.
Power SwitchTurns the computer on and off.
Power-On LightTurns on when the computer is turned on.
Hard Drive Activity LightTurns on when the hard drive is reading or writing.
4
is green.
5
or diskette drive light 1 is on, the drive is either reading information from
1-14Product Description
1.4.2Drive Positions
Figure 1-3.
Drive Positions on the Compaq Deskpro 2000 Desktop Computer
The computer has space available for a combination of up to five mass storage devices. They may be
installed in various configurations, including those shown in the following table.
Table 1-4
Compaq Deskpro 2000 Desktop Computer
DriveConfiguration
1
2
3
4
5
To verify the type, size, and capacity of the mass storage devices installed in the computer, run the
View System Information (INSPECT) utility available at computer startup. Refer to Chapter 7, "
Compaq Utilities," for more information.
✎
Standard 3.5-inch 1.44MB diskette drive
Optional diskette drive (5.25-inch or 3.5-inch), tape drive, hard drive, or CD-ROM drive (half-height)
Optional diskette drive (5.25-inch or 3.5-inch), tape drive, hard drive, or CD-ROM drive (half-height)
Primary hard drive bay (3.5-inch, third-height)
Primary hard drive bay (5.25-inch, third-height)
The computer may have either a 5.25-inch hard drive or a 3.5-inch hard drive installed. If the hard
drive is a 5.25-inch drive, it will be installed in location
will be installed in location
4
.
5
. If the hard drive is a 3.5-inch drive, it
Compaq Deskpro 20001-15
1.4.3Rear Panel Connectors
The following illustration shows the rear panel connectors on your desktop computer. Each connector is
color-coded and includes an icon to help you identify its function.
Figure 1-4.
Rear Panel Connectors
Rear Panel Connectors
Ref.ComponentFunction
1
2
3
4
5
6
7
8
9
Voltage Select SwitchSwitches voltage between 115 V (U.S.) and 230 V to match geographical requirements.
Monitor
(Pentium Pro models only)
Power Cord ConnectionConnects the computer to an electrical power outlet.
Universal Serial Bus Connector
(Pentium Pro models only)
Serial ConnectorConnects a serial device, such as a serial printer.
Keyboard ConnectorConnects the keyboard.
Mouse ConnectorConnects the mouse.
Parallel ConnectorConnects a parallel device, such as a parallel printer.
Monitor Connector
(Pentium models only)
Connects a monitor to a graphics controller card.
NOTE: The Matrox MGA Millennium graphics controller also includes a multimedia port.
Connects the computer to any peripheral while the computer is operating. Is a fully
functional Plug and Play connector.
Connects a monitor to an integrated graphics controller.
Table 1-5
1-16Product Description
1.5 Minitower Computer Features
The Compaq Deskpro 2000 Minitower Personal Computer comes with a mouse and keyboard. You will
also need a Compaq color monitor or other compatible monitor to operate your computer.
Compaq Deskpro 20001-17
1.5.1Front Panel Lights and Controls
Figure 1-5.
1-18Product Description
Power Switch and Front Panel Lights
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