Microsoft and Windows are U.S. registered
trademarks of the Microsoft group of
companies.
The information contained herein is subject to
change without notice. 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.
Fourth Edition: December 2014
Third Edition: November 2014
Second Edition: May 2014
First Edition: March 2014
Document part number: 756961-004
Product Notice
This guide describes features that are common
to most models. Some features may not be
available on your computer.
Not all features are available in all editions of
Windows 8. This computer may require
upgraded and/or separately purchased
hardware, drivers and/or software to take full
advantage of Windows 8 functionality. See
http://www.microsoft.com for details.
This computer may require upgraded and/or
separately purchased hardware and/or a DVD
drive to install the Windows 7 software and
take full advantage of Windows 7 functionality.
See http://windows.microsoft.com/en-us/
windows7/get-know-windows-7 for details.
Software terms
By installing, copying, downloading, or
otherwise using any software product
preinstalled on this computer, you agree to be
bound by the terms of the HP End User License
Agreement (EULA). If you do not accept these
license terms, your sole remedy is to return the
entire unused product (hardware and
software) within 14 days for a refund subject
to the refund policy of your place of purchase.
For any further information or to request a full
refund of the computer, please contact your
local point of sale (the seller).
Page 3
About This Book
This guide provides basic information for upgrading the HP Desktop Mini Business PC.
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.
NOTE:Text set off in this manner provides important supplemental information.
iii
Page 4
iv About This Book
Page 5
Table of contents
1 Product features ........................................................................................................................................... 1
Standard configuration features ........................................................................................................................... 1
Serial number location .......................................................................................................................................... 8
Serviceability features ........................................................................................................................................... 9
Warnings and cautions .......................................................................................................................................... 9
Connecting the power cord ................................................................................................................................. 10
Removing the computer access panel ................................................................................................................ 11
Replacing the computer access panel ................................................................................................................. 12
Changing from desktop to tower configuration ................................................................................................. 13
Removing and replacing a hard drive .................................................................................................................. 14
Replacing the battery .......................................................................................................................................... 22
Installing a security lock ...................................................................................................................................... 25
Index ............................................................................................................................................................. 29
vi
Page 7
1Product features
Standard configuration features
Features may vary depending on the model. For a complete listing of the hardware and software installed in
the computer, run the diagnostic utility (included on some computer models only).
NOTE:This computer model can be used in a tower orientation or a desktop orientation. The tower stand is
sold separately.
Standard configuration features1
Page 8
Front panel components (EliteDesk 800, EliteDesk 705, ProDesk
NOTE: The USB 3.0 Port - Charging also provides current to charge a device such as a Smart Phone. The charging current
is available whenever the power cord is plugged into the system, even when the system is off.
NOTE: When a device is plugged into the Microphone/Headphone Connector, a dialog box will pop up asking if you want
to use the connector for a microphone Line-In device or a headphone. You can reconfigure the connector at any time by
double-clicking the Audio Manager icon in the Windows taskbar.
NOTE: The Power On Light is normally white when the power is on. If it is flashing red, there is a problem with the
computer and it is displaying a diagnostic code. Refer to the Maintenance and Service Guide to interpret the code.
2Chapter 1 Product features
Page 9
Front panel components (ProDesk 400)
1Dual-State Power Button4Microphone Connector
2Hard Drive Activity Light5Headphone Connector
3USB 3.0 Ports
NOTE: The Power On Light is normally white when the power is on. If it is flashing red, there is a problem with the
computer and it is displaying a diagnostic code. Refer to the Maintenance and Service Guide to interpret the code.
NOTE: The two upper USB ports have additional power capacity to support the Desktop Mini External Expansion Sleeves.
NOTE: The two lower USB ports support wake-from-sleep states if that option is enabled in the Computer Setup (F10)
utility.
VGA Monitor Connector5RJ-45 Network Connector
USB 2.0 Ports with enhanced power (black)6Power Cord Connector
Rear panel components (ProDesk 400)7
Page 14
Serial number location
Each computer has a unique serial number and a product ID number that are located on the exterior of the
computer. Keep these numbers available for use when contacting customer service for assistance.
8Chapter 1 Product features
Page 15
2Hardware upgrades
Serviceability features
The computer includes features that make it easy to upgrade and service. No tools are needed for most 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.
WARNING!To reduce the risk of personal injury from electrical shock, hot surfaces, or fire:
Disconnect the power cord from the wall outlet and allow the internal system components to cool before
touching.
Do not plug telecommunications or telephone connectors into the network interface controller (NIC)
receptacles.
Do not disable the power cord grounding plug. The grounding plug is an important safety feature.
Plug the power cord in a grounded (earthed) outlet that is easily accessible at all times.
To reduce the risk of serious injury, read the Safety & Comfort Guide. It describes proper workstation, setup,
posture, and health and work habits for computer users, and provides important electrical and mechanical
safety information. This guide is located on the Web at
WARNING!Energized and moving parts inside.
Disconnect power to the equipment before removing the enclosure.
Replace and secure the enclosure before re-energizing the equipment.
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
When the computer is plugged into an AC power source, voltage is always applied to the system board. You
must disconnect the power cord from the power source before opening the computer to prevent damage to
internal components.
Electrostatic discharge on page 26 for more information.
http://www.hp.com/ergo.
Serviceability features9
Page 16
Connecting the power cord
When connecting the power supply, it is important to follow the steps below to ensure the power cord does
not pull free from the computer.
1.Plug the female end of the power cord into the power supply brick (1).
2.Connect the other end of the power cord to an electrical outlet (2).
3.Connect the round end of the power supply cord to the power supply connector on the rear of the
computer (3).
4.Route the power cord through the retainer clip to prevent the cord from becoming disconnected from
the computer (4).
5.Bundle any excess power cord with the supplied strap (5).
CAUTION:Failure to secure the power cable with the retainer clip may result in the power cord becoming
disconnected and loss of data.
10Chapter 2 Hardware upgrades
Page 17
Removing the computer access panel
To access internal components, you must remove the access panel:
1.Remove/disengage any security devices that prohibit opening the computer.
2.Remove all removable media, such as a USB flash drive, 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.
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.If the computer is on a stand, remove the computer from the stand and lay the computer down.
6.Loosen the thumbscrew on the rear of the computer (1) then slide the panel forward and lift if off the
computer (2).
Removing the computer access panel11
Page 18
Replacing the computer access panel
Place the panel on the computer then slide it back (1) and tighten the thumbscrew (2) to secure the panel in
place.
12Chapter 2 Hardware upgrades
Page 19
Changing from desktop to tower configuration
The computer can be used in a tower orientation with an optional tower stand that can be purchased from
HP.
1.Remove/disengage any security devices that prohibit opening the computer.
2.Remove all removable media, such as a USB flash drive, 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.
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.Orient the computer so that its right side is facing up and place the computer in the optional stand.
NOTE:To stabilize the computer in a tower orientation, HP recommends the use of the optional tower
stand.
6.Reconnect the power cord and any external devices, then turn on the computer.
NOTE:Ensure at least 10.2 centimeters (4 inches) of space on all sides of the computer remains clear
and free of obstructions.
7.Lock any security devices that were disengaged when the access panel was removed.
Changing from desktop to tower configuration13
Page 20
Removing and replacing a hard drive
NOTE: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.
1.Remove/disengage any security devices that prohibit opening the computer.
2.Remove all removable media, such as a USB flash drive, 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.
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.If the computer is on a stand, remove the computer from the stand.
6.Remove the computer access panel.
7.Disconnect the hard drive power cable (1) and data cable (2) from the system board.
14Chapter 2 Hardware upgrades
Page 21
8.Pull the release lever next to the rear of the hard drive outward (1). While pulling the release lever out,
slide the drive back until it stops, then lift the drive up and out of the bay (2).
9.To install a hard drive, you must transfer the silver and blue isolation mounting guide screws from the
old hard drive to the new hard drive.
10. Transfer the drive cables from the old drive to the new drive.
Removing and replacing a hard drive15
Page 22
11. Align the guide screws with the slots on the chassis drive cage, press the hard drive down into the bay,
then slide it forward until it stops and locks in place.
12. Connect the hard drive power cable (1) and data cable (2) to the system board.
13. Replace the access panel.
14. If the computer was on a stand, replace the stand.
15. Reconnect the power cord and turn on the computer.
16. Lock any security devices that were disengaged when the access panel was removed.
16Chapter 2 Hardware upgrades
Page 23
Installing additional memory
The computer comes with double data rate 3 synchronous dynamic random access memory (DDR3-SDRAM)
small outline dual inline memory modules (SODIMMs).
SODIMMs
The memory sockets on the system board can be populated with up to two industry-standard SODIMMs.
These memory sockets are populated with at least one preinstalled SODIMM. To achieve the maximum
memory support, you can populate the system board with up to 16-GB of memory.
support CAS latency 11 DDR3 1600 MHz (11-11-11 timing)
●
contain the mandatory Joint Electronic Device Engineering Council (JEDEC) specification
In addition, the computer supports:
●
512-Mbit, 1-Gbit, and 2-Gbit non-ECC memory technologies
●
single-sided and double-sided SODIMMS
●
SODIMMs constructed with x8 and x16 devices; SODIMMs constructed with x4 SDRAM are not supported
NOTE:The system will not operate properly if you install unsupported SODIMMs.
Installing additional memory17
Page 24
Populating SODIMM sockets
There are two SODIMM sockets on the system board, with one socket per channel. The sockets are labeled
DIMM1 and DIMM3. The DIMM1 socket operates in memory channel B. The DIMM3 socket operates in memory
channel A.
ItemDescriptionSystem Board LabelSocket Color
1SODIMM1 socket, Channel BDIMM1Black
2SODIMM3 socket, Channel ADIMM3Black
The system will automatically operate in single channel mode, dual channel mode, or flex mode, depending
on how the SODIMMs are installed.
●
The system will operate in single channel mode if the SODIMM sockets are populated in one channel
only.
●
The system will operate in a higher-performing dual channel mode if the memory capacity of the
SODIMM in Channel A is equal to the memory capacity of the SODIMM in Channel B.
●
The system will operate in flex mode if the memory capacity of the SODIMM in Channel A is not equal to
the memory capacity of the SODIMM in Channel B. In flex mode, the channel populated with the least
amount of memory describes the total amount of memory assigned to dual channel and the remainder
is assigned to single channel. If one channel will have more memory than the other, the larger amount
should be assigned to channel A.
●
In any mode, the maximum operational speed is determined by the slowest SODIMM in the system.
18Chapter 2 Hardware upgrades
Page 25
Installing SODIMMs
CAUTION:You must disconnect the power cord and wait approximately 30 seconds for the power to drain
before adding or removing memory modules. Regardless of the power-on state, voltage is always supplied to
the memory modules as long as the computer is plugged into an active AC outlet. Adding or removing
memory modules while voltage is present may cause irreparable damage to the memory modules or system
board.
The memory module sockets have gold-plated metal contacts. When upgrading the memory, it is important
to use memory modules with gold-plated metal contacts to prevent corrosion and/or oxidation resulting
from having incompatible metals in contact with each other.
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 information, refer to
When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the
module.
1.Remove/disengage any security devices that prohibit opening the computer.
2.Remove all removable media, such as a USB flash drive, 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.
Electrostatic discharge on page 26.
CAUTION:You must disconnect the power cord and wait approximately 30 seconds for the power to
drain before adding or removing memory modules. Regardless of the power-on state, voltage is always
supplied to the memory modules as long as the computer is plugged into an active AC outlet. Adding or
removing memory modules while voltage is present may cause irreparable damage to the memory
modules or system board.
5.If the computer is on a stand, remove the computer from the stand and lay the computer down.
6.Remove the computer access panel.
Installing additional memory19
Page 26
7.Disconnect the hard drive power cable (1) and data cable (2) from the system board.
WARNING!To reduce risk of personal injury from hot surfaces, allow the internal system components
to cool before touching.
8.Pull the release lever next to the rear of the hard drive outward (1). While pulling the release lever out,
slide the drive back until it stops, then lift the drive up and out of the bay (2).
20Chapter 2 Hardware upgrades
Page 27
9.To remove a SODIMM, press outward on the two latches on each side of the SODIMM (1) then pull the
SODIMM out of the socket (2).
10. Slide the new SODIMM into the socket at approximately a 30° angle (1) then press the SODIMM down (2)
so that the latches lock it in place.
NOTE:A memory module can be installed in only one way. Match the notch on the module with the tab
on the memory socket.
11. Replace the hard drive and connect the power and data cables to the system board.
12. Replace the access panel.
13. If the computer was on a stand, replace the stand.
14. Reconnect the power cord and turn on the computer.
15. Lock any security devices that were disengaged when the computer cover or access panel was removed.
The computer automatically recognizes the additional memory when you turn on the computer.
Installing additional memory21
Page 28
Replacing the battery
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 3volt lithium coin cell battery.
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 (140°F).
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.
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.
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.
NOTE: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.
HP encourages customers to recycle used electronic hardware, HP original print cartridges, and rechargeable
batteries. For more information about recycling programs, go to
1.Remove/disengage any security devices that prohibit opening the computer.
2.Remove all removable media, such as a USB flash drive, 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.
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.
http://www.hp.com/recycle.
22Chapter 2 Hardware upgrades
Page 29
6.Locate the battery and battery holder on the system board.
7.Depending on the type of battery holder on the system board, complete the following instructions to
replace the battery.
NOTE:You may need to use a small tool, such as tweezers or needle-nose pliers, to remove and
replace the battery.
Type 1
a.Pull back on the clip (1) that is holding the battery in place, and lift the battery out of the holder
(2).
Replacing the battery23
Page 30
b.Pull back on the clip (1) and slide the replacement battery down into the holder (2).
Type 2
a.Push the battery toward the outside of the chassis to release it from the holder and lift it out.
b.Lower the battery so that is next to the holder then push it into the holder.
24Chapter 2 Hardware upgrades
Page 31
NOTE:After the battery has been replaced, use the following steps to complete this procedure.
8.Replace the computer access panel.
9.Plug in the computer and turn on power to the computer.
10. Reset the date and time, your passwords, and any special system setups using Computer Setup.
11. Lock any security devices that were disengaged when the computer access panel was removed.
Installing a security lock
The security locks displayed below and on the following pages can be used to secure the computer.
Cable lock
Padlock
Installing a security lock25
Page 32
AElectrostatic discharge
A discharge of static electricity from a finger or other conductor may damage system boards or other staticsensitive 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.
●
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.
NOTE:For more information on static electricity, contact an HP authorized dealer, reseller, or service
provider.
26Appendix A Electrostatic discharge
Page 33
BComputer operating guidelines, routine
care and shipping preparation
Computer operating guidelines and routine care
Follow these guidelines to properly set up and care for the computer and monitor:
●
Keep the computer away from excessive moisture, direct sunlight, and extremes of heat and cold.
●
Operate the computer on a sturdy, level surface. Leave a 10.2-cm (4-inch) clearance on all vented sides
of the computer and above the monitor to permit the required airflow.
●
Never restrict the airflow into the computer by blocking any vents or air intakes. Do not place the
keyboard, with the keyboard feet down, directly against the front of the desktop unit as this also
restricts airflow.
●
Never operate the computer with the access panel or any of the expansion card slot covers removed.
●
Do not stack computers on top of each other or place computers so near each other that they are
subject to each other’s re-circulated or preheated air.
●
If the computer is to be operated within a separate enclosure, intake and exhaust ventilation must be
provided on the enclosure, and the same operating guidelines listed above will still apply.
●
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 all vented sides of the computer. Lint, dust, and other foreign
matter can block the vents and limit the airflow.
Computer operating guidelines and routine care27
Page 34
Shipping preparation
Follow these suggestions when preparing to ship the computer:
1.Back up the hard drive files to an external storage device. Be sure that the backup media is not exposed
to electrical or magnetic impulses while stored or in transit.
NOTE:The hard drive locks automatically when the system power is turned off.
2.Remove and store all removable media.
3.Turn off the computer and external devices.
4.Disconnect the power cord from the electrical outlet, then from the computer.
5.Disconnect the system components and external devices from their power sources, then from the
computer.
NOTE:Ensure that all boards are seated properly and secured in the board slots before shipping the
computer.
6.Pack the system components and external devices in their original packing boxes or similar packaging
with sufficient packing material to protect them.
28Appendix B Computer operating guidelines, routine care and shipping preparation
Page 35
Index
A
access panel
removal11
replacement12
B
battery replacement22
C
computer operating guidelines27
E
electrostatic discharge, preventing
damage26
F
front panel components
EliteDesk 800, EliteDesk 705,
ProDesk 6002
ProDesk 4003
H
hard drive
installation14
removal14
I
installation guidelines9
installing
battery22
computer access panel12
hard drive14
memory17