HP dx2358 Hardware Reference Manual

Hardware Reference Guide

HP Compaq Business Desktops

dx2358 Microtower Models

Document Part Number: 481135-001

February 2008

This guide provides basic information for upgrading this computer
model.

© Copyright 2008 Hewlett-Packard Development Company, L.P.
The information contained herein is subject to change without notice.

Microsoft, MS-DOS, Windows are trademarks of Microsoft Corporation in the
U.S. and other countries.

The only warranties for HP products and services are set forth in the express
warranty statements accompanying such products and services. Nothing herein
should be construed as constituting an additional warranty. HP shall not be liable
for technical or editorial errors or omissions contained herein.

This document contains proprietary information that is protected by copyright.
No part of this document may be photocopied, reproduced, or translated to
another language without the prior written consent of Hewlett-Packard
Company.

Å

WARNING: Text set off in this manner indicates that failure to follow
directions could result in bodily harm or loss of life.

Ä

CAUTION:

directions could result in damage to equipment or loss of information.

Hardware Reference Guide

HP Compaq Business Desktops

dx2358 Microtower Models

First Edition (February 2008)

Document Part Number: 481135-001

Hardware Reference Guide www.hp.com iii

Contents

1 Product Features

Standard Configuration Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1

Front Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2

Rear Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3

Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4

Windows Logo Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5

Special Mouse Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5

Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6

2 Hardware Upgrades

Serviceability Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1

Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1

Removing the Computer Access Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2

Removing the Front Bezel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3

Installing Additional Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–5

DIMMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–5

DDR2-SDRAM DIMMs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–5

Populating DIMM Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–6

Installing DIMMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–8

Removing a 5.25" Drive Bezel Blank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–10

Replacing or Upgrading a Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–11

Locating Drive Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–12

Removing a Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–13

Replacing a Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–19

Removing or Installing an Expansion Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–23

Reassembling the Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–29

Hardware Reference Guide www.hp.com iv

Contents

A Specifications

B Battery Replacement

C Security Lock Provisions

Installing a Security Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–1

Cable Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–1

Padlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–2

D Electrostatic Discharge

Preventing Electrostatic Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–1

Grounding Methods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–1

E Computer Operating Guidelines, Routine Care and Shipping
Preparation

Computer Operating Guidelines and Routine Care. . . . . . . . . . . . . . . . . . . . . . . . . . . . E–1

Optical Drive Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E–2

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E–2

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E–2

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E–2

Shipping Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E–3

Hardware Reference Guide www.hp.com 1–1

1

Product Features

Standard Configuration Features

The HP Compaq Microtower features may vary depending on the
model. For a complete listing of the hardware and software installed
in the computer, run the Diagnostics for Windows utility. Instructions
for using this utility are provided in the Troubleshooting Guide on the
Documentation and Diagnostics CD.

Microtower Configuration

Hardware Reference Guide www.hp.com 1–2

Product Features

Front Panel Components

Drive configuration may vary by model.

Front Panel Components

1 Optical Drives 6 Power Button

2 Optical Drive Activity Lights 7 Optical Drive Eject Buttons

3 Diskette Drive (optional) 8 USB (Universal Serial Bus) Ports

4 Diskette Drive Activity Light (optional) 9 Headphone Jack

5 Diskette Drive Eject Button (optional) - Microphone Connector

Hardware Reference Guide www.hp.com 1–3

Product Features

Rear Panel Components

Rear Panel Components

1 Power Cord Connector 7

n

RJ-45 Network Connector

2 Voltage Select Switch 8

l

Parallel Port Connector

3

b

PS/2 Mouse Connector 9

c

Monitor Connector

4

a

PS/2 Keyboard Connector -

h

Headphone/Line-Out Connector

5

o

Universal Serial Bus (USB) q

j

Audio/Line-In Connector

6

m

Serial Port Connector w

g

Microphone Connector

✎

Arrangement and number of connectors may vary by model.

Hardware Reference Guide www.hp.com 1–4

Product Features

Keyboard

Keyboard Components

1 Function Keys Perform special functions depending on the software application

being used.

2 Editing Keys Includes the following: Insert, Home, Page Up, Delete, End, and

Page Down.

3 Status Lights Indicate the status of the computer and keyboard settings

(Num Lock, Caps Lock, and Scroll Lock).

4 Numeric Keys Work like a calculator keypad.

5 Arrow Keys Used to navigate through a document or Web site. These keys

allow you to move left, right, up, and down, using the keyboard
instead of the mouse.

6 Ctrl Keys Used in combination with another key; its effect depends on the

application software you are using.

7 Application Key* Used (like the right mouse button) to open pop-up menus in a

Microsoft Office application. May perform other functions in other
software applications.

8 Windows Logo

Keys*

Used to open the Start menu in Microsoft Windows. Used in
combination with other keys to perform other functions.

9 Alt Keys Used in combination with another key; its effect depends on the

application software you are using.

*Keys available in select geographic regions.

Hardware Reference Guide www.hp.com 1–5

Product Features

Windows Logo Key

Use the Windows Logo key in combination with other keys to
perform certain functions available in the Windows operating system.
Refer to the “Keyboard” section to identify the Windows Logo key.

Special Mouse Functions

Most software applications support the use of a mouse. The functions
assigned to each mouse button depend on the software applications
you are using.

Windows Logo Key Functions

Windows Logo Key Displays or hides the Start menu.

Windows Logo Key + d Displays the Desktop.

Windows Logo Key + m Minimizes all open applications.

Shift + Windows Logo Key + m Undoes Minimize All.

Windows Logo Key + e Launches My Computer.

Windows Logo Key + f Launches Find Document.

Windows Logo Key + Ctrl + f Launches Find Computer.

Windows Logo Key + F1 Launches Windows Help.

Windows Logo Key + l Locks the computer if you are connected to a

network domain, or allows you to switch users if you
are not connected to a network domain.

Windows Logo Key + r Launches the Run dialog box.

Windows Logo Key + u Launches the Utility Manager.

Windows Logo Key + Tab Activates the next Taskbar button.

Hardware Reference Guide www.hp.com 1–6

Product Features

Serial Number Location

Each computer has a unique serial number and a product ID number
that are located on the top cover of the computer. Keep these numbers
available for use when contacting customer service for assistance.

Serial Number and Product ID Location

Hardware Reference Guide www.hp.com 2–1

2

Hardware Upgrades

Serviceability Features

The Microtower computer includes features that make it easy to
upgrade and service. A Torx T-15 screwdriver is needed for many of
the installation procedures described in this chapter.

Warnings and Cautions

Before performing upgrades be sure to carefully read all of the
applicable instructions, cautions, and warnings in this guide.

Å

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.

Å

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.

Ä

CAUTION: Static electricity can damage the electrical 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. See Chapter D, “Electrostatic Discharge” for
more information.

Ä

CAUTION: Before removing the computer cover, ensure that the
computer is turned off and that the power cord is disconnected from the
electrical outlet.

Å

WARNING: Hazardous Moving Parts

Keep Fingers and Other Body Parts Away

Hardware Reference Guide www.hp.com 2–2

Hardware Upgrades

Removing the Computer Access Panel

1. Remove/disengage any security devices that prohibit opening the
computer.

2. Remove all removable media, such as diskettes or compact discs,
from the computer.

3. Turn off the computer properly through the operating system,
then turn off any external devices.

4. Disconnect the power cord from the power outlet and disconnect
any external devices.

Ä

CAUTION: Regardless of the power-on state, voltage is always present
on the system board as long as the system is plugged into an active AC
outlet. You must disconnect the power cord to avoid damage to the
internal components of the computer.

5. Loosen the screw 1 that secures the access panel to the computer
chassis.

6. Slide the access panel back 2 about 1.3 cm (1/2 inch), then lift it
off the unit.

✎

You may want to lay the computer on its side to install internal parts.
Be sure the side with the access panel is facing up.

Hardware Reference Guide www.hp.com 2–3

Hardware Upgrades

Removing the Computer Access Panel

Removing the Front Bezel

1. Remove/disengage any security devices that prohibit opening the
computer.

2. Remove all removable media, such as diskettes or compact discs,
from the computer.

3. Turn off the computer properly through the operating system,
then turn off any external devices.

4. Disconnect the power cord from the power outlet and disconnect
any external devices.

Ä

CAUTION: Regardless of the power-on state, voltage is always present
on the system board as long as the system is plugged into an active AC
outlet. You must disconnect the power cord to avoid damage to the
internal components of the computer.

5. Remove the computer access panel.

Hardware Reference Guide www.hp.com 2–4

Hardware Upgrades

6. Press outward on the three latches on the right side of the bezel
1, then rotate the right side of the bezel off the chassis 2
followed by the left side.

Removing the Front Bezel

Hardware Reference Guide www.hp.com 2–5

Hardware Upgrades

Installing Additional Memory

The computer comes with double data rate 2 synchronous dynamic
random access memory (DDR2-SDRAM) dual inline memory
modules (DIMMs).

DIMMs

The memory sockets on the system board can be populated with up to
four industry-standard DIMMs. These memory sockets are populated
with at least one preinstalled DIMM. To achieve the maximum
memory support, you can populate the system board with up to 4GB
of memory configured in a high-performing dual channel mode.

DDR2-SDRAM DIMMs

For proper system operation, if the computer supports
DDR2-SDRAM DIMMs, the DIMMs must be:

■ industry-standard 240-pin

■ unbuffered PC2 6400 800 Mhz-compliant*

■ 1.8 volt DDR2-SDRAM DIMMs

The DDR2-SDRAM DIMMs must also:

■ support CAS latency 6 (CL=6) for DDR2 / 800 Mhz*

■ contain the mandatory JEDEC SPD information

In addition, the computer supports:

■ 512Mbit, 1Gbit and 2Gbit non-ECC memory technologies

■ single-sided and double-sided DIMMS

✎

The system will not start if you install unsupported DIMMs.

*Can downgrade support to PC4200 533 Mhz and PC2 5300 667
Mhz.

Hardware Reference Guide www.hp.com 2–6

Hardware Upgrades

Populating DIMM Sockets

The system will automatically operate in single channel mode, dual
channel Asymmetric mode, or higher-performing dual cahnnel
Interleaved mode, depending on how the DIMMs are installed.

■ The system will operate in single channel mode if the DIMM

sockets are populated in one channel only.

■ The system will operate in dual channel Asymmetric mode if the

total memory capacity of the DIMMs in Channel A is not equal to
the total memory capacity of the DIMMs in Channel B.

■ The system will operate in a higher-performing dual channel

Interleaved mode if the total memory capacity of the DIMMs in
Channel A is equal to the total memory capacity of the DIMMs in
Channel B. However, the technology and device width can vary
between the channels. For example, if Channel A is populated
with two 512MB DIMMS and Channel B is populated with one
1GB DIMM, the system will operate in Interleaved mode.

■ In any mode, the maximm operational speed is determined by the

slowest DIMM in the system.

Hardware Reference Guide www.hp.com 2–7

Hardware Upgrades

There are four DIMM sockets on the system board, with two sockets
per channel. The sockets are labeled XMM1, XMM2, XMM3, and
XMM4. Sockets XMM1 and XMM2 operate in memory channel A.
Sockets XMM3 and XMM4 operate in memory channel B.

DIMM Socket Locations

Item Description Socket Color

1 DIMM socket XMM1, Channel A White

2 DIMM socket XMM2, Channel B White

3 DIMM socket XMM3, Channel A Black

4 DIMM socket XMM4, Channel B Black

Hardware Reference Guide www.hp.com 2–8

Hardware Upgrades

Installing DIMMs

Ä

CAUTION: The memory module sockets have gold metal contacts. When
upgrading the memory, it is important to use memory modules with gold
metal contacts to prevent corrosion and/or oxidation resulting from having
incompatible metals in contact with each other.

Ä

CAUTION: Static electricity can damage the electronic components of
the computer or optional cards. Before beginning these procedures,
ensure that you are discharged of static electricity by briefly touching a
grounded metal object. For more informations, refer to Electrostatic

Discharge

Ä

CAUTION: When handling a memory module, be careful not to touch
any of the contacts. Doing so may damage the module.

1. Turn off the computer properly through the operating system and
turn off any external devices.

2. Disconnect the power cord from the power outlet and disconnect
any external devices.

3. Remove the computer access panel.

4. Locate the memory module sockets on the system board.

Å

WARNING: To reduce risk of personal injury from hot surfaces, allow
the internal system components to cool before touching.

Hardware Reference Guide www.hp.com 2–9

Hardware Upgrades

5. Open both latches of the memory module socket 1, and insert the
memory module into the socket 2.

Installing a DIMM

✎

A memory module can be installed in only one way. For maximum
performance, populate the sockets so that the memory capacity of
Channel A is equal to the memory capacity of Channel B. For
example, if you have one preinstalled DIMM in socket XMM1 and
are adding a second DIMM, it is recommended that you will install a
DIMM of equal memory capacity into the XMM3 or XMM4 socket.
Match the notch on the module with the tab on the memory socket.

6. Push the module down into the socket, ensuring that the module
is fully inserted and properly seated. Make sure the latches are in
the closed position 3.

7. Repeat steps 5 and 6 to install any additional modules.

8. Replace the access panel.

The computer should automatically recognize the additional memory
the next time you turn on the computer.

Hardware Reference Guide www.hp.com 2–10

Hardware Upgrades

Removing a 5.25" Drive Bezel Blank

If the computer was not shipped with a drive in the 5.25" option bay,
the bay will be covered by a bezel blank. If you add a drive to the
option bay, you must first remove the bezel blank.

1. Turn off the computer properly through the operating system and
turn off any external devices.

2. Disconnect the power cord from the power outlet and the
computer, and disconnect any external devices.

3. Remove the access panel and front bezel. Refer to “Removing the

Computer Access Panel” and “Removing the Front Bezel”.

4. While facing the inside of the front bezel, press the two retaining
tabs on the right towards the outer edge of the bezel 1 and pull
the bezel blank inwards to remove it 2.

Removing a Bezel Blank

✎

To install a bezel blank, slide the left side of the blank into the two
retainer slots on the left side of the front bezel then snap the right side
of the blank into place.

Hardware Reference Guide www.hp.com 2–11

Hardware Upgrades

Replacing or Upgrading a Drive

The computer supports up to five drives that may be installed in
various configurations.

This section describes the procedure for replacing or upgrading the
storage drives. A Torx screwdriver is needed to remove and install the
guide screws and retainer screws on a drive.

Ä

CAUTION: Make sure you back up your personal files on the hard drive
to an external storage device, such as a CD, before removing the hard
drive. Failure to do so will result in data loss. After replacing the primary
hard drive, you will need to check out the Restore Plus! CD to load the HP
factory-installed files.

Hardware Reference Guide www.hp.com 2–12

Hardware Upgrades

Locating Drive Positions

✎

The drive configuration shown below may be different than your
computer model.

Drive Positions

1 First 5.25-inch, half-height bays for optional drives

Second 5.25-inch, half-height bays for optional drives

2 One standard 3.5-inch, one-third height bays (1.44-MB

diskette drive shown)

Hardware Reference Guide www.hp.com 2–13

Hardware Upgrades

Removing a Drive

✎

Before you remove the old hard drive, be sure to back up the data
from the old hard drive so that you can transfer the data to the new
hard drive. Also, if you are replacing the primary hard drive, make
sure you have created a Recovery Disc Set to restore the operating
system, software drivers, and any software applications that were
preinstalled on the computer. If you do not have this CD set, select
Start > HP Backup and Recovery and create it now.

1. Remove/disengage any security devices that prohibit opening the
computer.

2. Remove all removable media, such as diskettes or compact discs,
from the computer.

3. Turn off the computer properly through the operating system,
then turn off any external devices.

4. Disconnect the power cord from the power outlet and disconnect
any external devices.

Ä

CAUTION: Regardless of the power-on state, voltage is always present
on the system board as long as the system is plugged into an active AC
outlet. You must disconnect the power cord to avoid damage to the
internal components of the computer.

5. Remove the computer access panel.

Hardware Reference Guide www.hp.com 2–14

Hardware Upgrades

6. Remove the two screws that secure the hard disk drive cage to the
chassis.

Removing the Hard Drive Cage Screws

Hardware Reference Guide www.hp.com 2–15

Hardware Upgrades

7. Push down the latch on the side of the hard disk drive cage 1,
then slide the hard disk drive cage away from the bottom of the
chassis 2 as shown below.

Releasing the Hard Drive Cage

Hardware Reference Guide www.hp.com 2–16

Hardware Upgrades

8. Lift the hard disk drive cage out of the chassis.

Removing the Hard Drive Cage

Hardware Reference Guide www.hp.com 2–17

Hardware Upgrades

9. Disconnect the power cable 1 and data cable 2 from the back of
the hard drive.

Disconnecting the Hard Drive Cables

2

1

Hardware Reference Guide www.hp.com 2–18

Hardware Upgrades

10. Remove the four screws that secure the hard disk drive to the hard

disk drive cage 1, then slide the hard disk drive out of the hard
disk drive cage 2.

Removing the Hard Drive

Hardware Reference Guide www.hp.com 2–19

Hardware Upgrades

Replacing a Drive

1. Follow the steps in “Removing a Drive” on page 13 to remove the
hard drive cage and, if necessary, the existing hard drive.

2. Slide the new drive into the hard disk drive cage 1, aligning the
drive with the four screw holes on the cage. Install the four 6-32
standard screws that secure the hard disk drive to the hard disk
drive cage 2. Make sure the hard disk drive cables are facing the
top of the drive cage.

✎

If you are replacing an old drive with a new drive, use the four
retainer screws from the old drive to install the new drive.

Installing the Hard Drive in the Drive Cage

Hardware Reference Guide www.hp.com 2–20

Hardware Upgrades

3. Connect the power cable 1 and data cable 2 to the back of the
hard drive.

Connecting the Hard Drive Cables

Ä

CAUTION: Never crease or bend a SATA data cable tighter than a 30
mm (1.18 in) radius. A sharp bend can break the internal wires.

2

1

Hardware Reference Guide www.hp.com 2–21

Hardware Upgrades

4. Place the hard disk drive cage into the chassis 1, then slide it
down toward the bottom of the chassis until it locks into place 2.

Installing the Hard Drive Cage

Hardware Reference Guide www.hp.com 2–22

Hardware Upgrades

5. Attach the two screws that secure the hard disk drive cage to the
chassis.

Securing the Hard Drive Cage

6. If installing a new drive, connect the opposite end of the data
cable to the appropriate system board connector.

✎

If your system has only one SATA hard drive, you must connect the
hard drive data cable to the dark blue connector labeled SATA0 to
avoid any hard drive performance problems. If you are adding a
second hard drive, connect the data cable to the next available
(unpopulated) SATA connector on the system board in the following
order: SATA0, SATA1, SATA3, SATA2.

7. Replace the computer access panel.

8. Reconnect the power cord and any external devices, then turn on
the computer.

9. Lock any security devices that were disengaged when the access
panel was removed.

✎

If you are replacing the primary hard drive, use the Recovery Disc Set
to restore the operating system, software drivers, and any software
applications that were preinstalled on the computer.

Hardware Reference Guide www.hp.com 2–23

Hardware Upgrades

Removing or Installing an Expansion Card

The computer has 2 PCI expansion slots,1 PCI Express x1 expansion
slot and 1 PCI Express x16 expansion slot.

Expansion Slot Locations

Item Description

1 PCI Express x16 expansion slot

2 PCI Express x1 expansion slot

3 PCI expansion slot

4 PCI expansion slot

Hardware Reference Guide www.hp.com 2–24

Hardware Upgrades

To remove, replace, or add an expansion card.

1. Turn off the computer properly through the operating system and
turn off any external devices. Disconnect the power cord from the
power outlet and disconnect any external devices.

2. Remove the access panel and lay the computer on its side with the
opening to internal parts where the access panel was located
facing up.

3. On the rear panel of the computer, remove the screw that secures
the slot cover lock in place 1 and slide the slot cover lock away
from the slots to remove it from the computer 2.

Releasing the Slot Cover Lock

Hardware Reference Guide www.hp.com 2–25

Hardware Upgrades

4. Before installing an expansion card, remove the expansion slot
cover or the existing expansion card.

a. If you are installing an expansion card in a vacant socket,

remove the appropriate expansion slot cover on the back of
the chassis. Pull the slot cover straight up from the socket
then away from the inside of the chassis.

Removing an Expansion Slot Cover

Hardware Reference Guide www.hp.com 2–26

Hardware Upgrades

b. If removing a standard PCI expansion card, hold the card at

each end, and carefully rock it back and forth until the
connectors pull free from the socket. Pull the expansion card
straight up from the socket 1 then away from the inside of
the chassis 2 to release it from the chassis frame. Be sure not
to scrape the card against the other components.

Removing an Expansion Card

Hardware Reference Guide www.hp.com 2–27

Hardware Upgrades

5. If replacing or adding a new expansion card, hold the card just
above the expansion slot on the system board then move the card
toward the rear of the chassis 1 so that the bottom of the bracket
on the card slides into the small slot on the chassis. Gently press
the card straight down into the expansion slot on the system
board 2.

Replacing or Adding an Expansion Card

6. While holding the expansion card bracket against the chassis,
slide the slot cover lock down toward the expansion card bracket
to secure it in place and replace the screw that secures the slot
cover lock.

7. Connect the external cables to the installed card, if needed.
Connect internal cables to the system board, if needed.

8. Replace the computer access panel and reconnect the power
cable.

✎

When installing an expansion card, press firmly on the card so that
the whole connector seats properly in the expansion card slot.

Hardware Reference Guide www.hp.com 2–28

Hardware Upgrades

9. If you are replacing an expansion card, store the old card in the
anti-static packaging that contained the new card.

10. While holding the expansion card bracket against the chassis,
slide the slot cover lock down toward the expansion card brackets
and slot covers 1 to secure them in place and replace the screw 2
that secures the slot cover lock.

Securing the Expansion Cards and Slot Covers

11. Complete the procedure described in the “Reassembling the

Computer” section of this chapter.

Hardware Reference Guide www.hp.com 2–29

Hardware Upgrades

Reassembling the Computer

1. Insert the three hooks on the left side of the bezel into the slots on

the chassis and rotate the bezel on from left to right 1 so that it
snaps in place.

Replacing the Front Bezel

Hardware Reference Guide www.hp.com 2–30

Hardware Upgrades

2. Place the side access panel in the proper position on the

chassis and slide it into place 1. Ensure that the hole for the
screw is aligned with the hole in the chassis and tighten
the screw 2.

Replacing the Side Access Panel

3. Reconnect the power cable to the computer and plug the cable
into an electrical outlet.

4. Reconnect all peripheral devices to the computer.

Å

WARNING: To reduce the risk of electrical shock, fire, or damage to
the equipment, do not plug telecommunications or telephone connectors
into the network interface controller (NIC) ports.

5. Turn on the computer by pressing the power button.

Hardware Reference Guide www.hp.com A-1

A

Specifications

HP Compaq Microtower

Desktop Dimensions

Height 14.76 inches 37.5 cm

Width 6.98 inches 17.73 cm

Depth 16.88 inches 42.87 cm

Approximate Weight 18.26 lb 8.3 kg

Temperature Range

Operating 41° to 95°F 5° to 35°C

Nonoperating -22° to 149°F -30° to 65°C

Relative Humidity (noncondensing)

Operating 5–80% 5–80%

Nonoperating 90% 90%

Maximum Altitude (unpressurized)

Operating 7,500 ft 2,286 m

Nonoperating 15,000 ft 4,572 m

✎

Operating temperature is derated 1.0°C per 1,000 ft (300 m) to 7,500 ft (2,286 m) above sea
level, no direct sustained sunlight. Maximum rate of change is 7.5°C/Hr. The upper limit may
be limited by the type and number of options installed.

A-2 www.hp.com Hardware Reference Guide

Specifications

Heat Dissipation

Maximum 1575 BTU/hr 397 kg-cal/hr

Typical (idle) 307 BTU/hr 77 kg-cal/hr

Input Voltage Switch Setting

Power Supply 115 V 230 V

Operating Voltage Range 90–132 VAC 180–264 VAC

Rated Voltage Range 100–127 VAC 200–240 VAC

Rated Line Frequency 50–60 Hz 50–60 Hz

✎

This system utilizes a passive power factor corrected power supply when used in the 230V
mode. This allows the system to pass the CE mark requirements for use in the countries of the
European Union.

This supply requires the use of an input voltage range select switch.

Power Output 300 W

(PFC)

300 W

(PFC)

Rated Input Current (maximum) 8 A @ 115 VAC 4 A @ 230 VAC

HP Compaq Microtower (Continued)

Hardware Reference Guide www.hp.com B–1

B

Battery Replacement

The battery that comes with the computer provides power to the
real-time clock. When replacing the battery, use a battery equivalent
to the battery originally installed in the computer. The computer
comes with a 3-volt lithium coin cell battery.

✎

The lifetime of the lithium battery can be extended by plugging the
computer into a live AC wall socket. The lithium battery is only used
when the computer is NOT connected to AC power.

Å

WARNING: The computer contains an internal lithium manganese dioxide
battery. There is a risk of fire and burns if the battery is not handled properly. To
reduce the risk of personal injury:

■ Do not attempt to recharge the battery.

■ Do not expose to temperatures higher than 60°C (140ºF).

■ Do not disassemble, crush, puncture, short external contacts, or

dispose of in fire or water.

■ Replace the battery only with the HP spare designated for this product.

Ä

CAUTION: Before replacing the battery, it is important to back up the
computer CMOS settings. When the battery is removed or replaced, the
CMOS settings will be cleared. Refer to the Troubleshooting Guide on the
Documentation and Diagnostics CD for information on backing up the
CMOS settings.

N

Batteries, battery packs, and accumulators should not be disposed of
together with the general household waste. In order to forward them to
recycling or proper disposal, please use the public collection system or
return them to HP, their authorized partners, or their agents.

Hardware Reference Guide www.hp.com B–2

Battery Replacement

Ä

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.

1. Turn off the computer properly through the operating system,
then turn off any external devices.

2. Disconnect the power cord from the power outlet and disconnect
any external devices. Then remove the computer access panel.

✎

It may be necessary to remove an expansion card to gain access to
the battery.

3. Locate the battery and battery holder on the system board.

4. Depending on the type of battery holder on the system board,
complete the following instructions to replace the battery.

a. To release the battery from its holder, squeeze the metal

clamp that extends above one edge of the battery. When the
battery pops up, lift it out 1.

b. To insert the new battery, slide one edge of the replacement

battery under the holder’s lip with the positive side up. Push
the other edge down until the clamp snaps over the other edge
of the battery 2.

Hardware Reference Guide www.hp.com B–3

Battery Replacement

Removing and Replacing a Coin Cell Battery

✎

After the battery has been replaced, use the following steps to
complete this procedure.

5. Replace the computer access panel.

6. Plug in the computer and turn on power to the computer.

7. Reset the date and time, your passwords, and any special system
setups, using Computer Setup. Refer to the Computer Setup (F10)
Utility Guide on the Documentation and Diagnostics CD.

Hardware Reference Guide www.hp.com C–1

C

Security Lock Provisions

Installing a Security Lock

The security locks displayed below and on the following page can be
used to secure the Microtower computer.

✎

A port security bracket (not shown) is also available. Go to

www.hp.com for more information.

Cable Lock

Installing a Cable Lock

Hardware Reference Guide www.hp.com C–2

Padlock

Installing a Padlock

Hardware Reference Guide www.hp.com D–1

D

Electrostatic Discharge

A discharge of static electricity from a finger or other conductor may
damage system boards or other static-sensitive devices. This type of
damage may reduce the life expectancy of the device.

Preventing Electrostatic Damage

To prevent electrostatic damage, observe the following precautions:

■ Avoid hand contact by transporting and storing products in

static-safe containers.

■ Keep electrostatic-sensitive parts in their containers until they

arrive at static-free workstations.

■ Place parts on a grounded surface before removing them from

their containers.

■ Avoid touching pins, leads, or circuitry.

■ Always be properly grounded when touching a static-sensitive

component or assembly.

Grounding Methods

There are several methods for grounding. Use one or more of the
following methods when handling or installing electrostatic-sensitive
parts:

■ Use a wrist strap connected by a ground cord to a grounded

workstation or computer chassis. Wrist straps are flexible straps
with a minimum of 1 megohm +/- 10 percent resistance in the
ground cords. To provide proper ground, wear the strap snug
against the skin.

Hardware Reference Guide www.hp.com D–2

Electrostatic Discharge

■ Use heelstraps, toestraps, or bootstraps at standing workstations.

Wear the straps on both feet when standing on conductive floors
or dissipating floor mats.

■ Use conductive field service tools.

■ Use a portable field service kit with a folding static-dissipating

work mat.

If you do not have any of the suggested equipment for proper
grounding, contact an HP authorized dealer, reseller, or service
provider.

✎

For more information on static electricity, contact an HP authorized
dealer, reseller, or service provider.

Hardware Reference Guide www.hp.com E–1

E

Computer Operating Guidelines,

Routine Care and Shipping Preparation

Computer Operating Guidelines and Routine Care

Follow these guidelines to take care of the computer and monitor:

■ Operate the computer on a sturdy, level surface. Leave a 10.2-cm

(4-inch) clearance at the back of the system unit and above the
monitor to permit the required airflow.

■ Never operate the computer with the cover or side panel

removed.

■ Never restrict the airflow into the computer by blocking the front

vents or air intake. Do not place the keyboard, with the keyboard
feet down, directly against the front of the desktop unit as this
also restricts airflow.

■ Keep the computer away from excessive moisture, direct

sunlight, and extremes of heat and cold.

■ Keep liquids away from the computer and keyboard.

■ Never cover the ventilation slots on the monitor with any type of

material.

■ Install or enable power management functions of the operating

system or other software, including sleep states.

■ Turn off the computer before you do either of the following:

❏ Wipe the exterior of the computer with a soft, damp cloth as

needed. Using cleaning products may discolor or damage the
finish.

❏ Occasionally clean the air vents on the front and back of the

computer. Lint and other foreign matter can block the vents
and limit the airflow.

Hardware Reference Guide www.hp.com E–2

Computer Operating Guidelines, Routine Care and Shipping Preparation

Optical Drive Precautions

Be sure to observe the following guidelines while operating or
cleaning the optical drive.

Operation

■ Do not move the drive during operation. This may cause it to

malfunction during reading.

■ Avoid exposing the drive to sudden changes in temperature, as

condensation may form inside the unit. If the temperature
suddenly changes while the drive is on, wait at least one hour
before you turn off the power. If you operate the unit
immediately, it may malfunction while reading.

■ Avoid placing the drive in a location that is subject to high

humidity, extreme temperatures, mechanical vibration, or direct
sunlight.

Cleaning

■ Clean the panel and controls with a soft, dry cloth or a soft cloth

lightly moistened with a mild detergent solution. Never spray
cleaning fluids directly on the unit.

■ Avoid using any type of solvent, such as alcohol or benzene,

which may damage the finish.

Safety

If any object or liquid falls into the drive, immediately unplug the
computer and have it checked by an authorized HP service provider.

Hardware Reference Guide www.hp.com E–3

Computer Operating Guidelines, Routine Care and Shipping Preparation

Shipping Preparation

Follow these suggestions when preparing to ship the computer:

1. Back up the hard drive files on PD discs, tape cartridges, CDs,
or diskettes. Be sure that the backup media is not exposed to
electrical or magnetic impulses while stored or in transit.

✎

The hard drive locks automatically when the system power is
turned off.

2. Remove and store any program diskettes from the diskette drives.

3. Insert a blank diskette into the diskette drive to protect the drive
while in transit. Do not use a diskette on which you have stored or
plan to store data.

4. Turn off the computer and external devices.

5. Disconnect the power cord from the electrical outlet, then from
the computer.

6. Disconnect the system components and external devices from
their power sources, then from the computer.

✎

Ensure that all boards are seated properly and secured in the board
slots before shipping the computer.

7. Pack the system components and external devices in their original
packing boxes or similar packaging with sufficient packing
material to protect them.