Hp 705 G3 SFF User Manual
Hardware Reference Guide
HP EliteDesk 705 G3 SFF Business PC
© Copyright 2016 HP Development Company,
L.P.
Windows is either a registered trademark or
trademark of Microsoft Corporation in the
United States and/or other countries.
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.
First Edition: July 2016
Document part number: 900229-001
Product notice
This guide describes features that are common
to most models. Some features may not be
available on your computer.
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).
About This Book
This guide provides basic information for upgrading the HP EliteDesk Business PC.
WARNING! Indicates a hazardous situation that, if not avoided, could result in death or serious injury.
CAUTION: Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.
IMPORTANT: Indicates information considered important but not hazard-related (for example, messages
related to property damage). A notice alerts the user that failure to follow a procedure exactly as described
could result in loss of data or in damage to hardware or software. Also contains essential information to
explain a concept or to complete a task.
NOTE: Contains additional information to emphasize or supplement important points of the main text.
TIP: Provides helpful hints for completing a task.
iii
iv About This Book
Table of contents
1 Product features ........................................................................................................................................... 1
Standard conguration features ........................................................................................................................... 1
Front panel components ....................................................................................................................................... 2
Rear panel components ......................................................................................................................................... 3
Serial number location .......................................................................................................................................... 4
2 Hardware upgrades ....................................................................................................................................... 5
Serviceability features ........................................................................................................................................... 5
Warnings and cautions .......................................................................................................................................... 5
Removing the computer access panel ................................................................................................................... 6
Replacing the computer access panel ................................................................................................................... 7
Removing the front bezel ...................................................................................................................................... 8
Removing a slim optical drive bezel blank ............................................................................................................ 9
Replacing the front bezel .................................................................................................................................... 10
Cleaning the optional dust lter .......................................................................................................................... 10
Changing from desktop to tower conguration .................................................................................................. 13
System board connections .................................................................................................................................. 14
Installing additional memory .............................................................................................................................. 15
DIMMs ................................................................................................................................................ 15
DDR4-SDRAM DIMMs ......................................................................................................................... 15
Populating DIMM sockets .................................................................................................................. 15
Installing DIMMs ................................................................................................................................ 16
Removing or installing an expansion card .......................................................................................................... 18
Drive positions ..................................................................................................................................................... 22
Removing and installing drives ........................................................................................................................... 23
Removing a 9.5 mm slim optical drive .............................................................................................. 24
Installing a 9.5 mm slim optical drive ............................................................................................... 25
Removing and replacing a primary 3.5-inch hard drive ................................................................... 27
Removing a secondary 3.5-inch hard drive ...................................................................................... 30
Installing a secondary 3.5-inch hard drive ....................................................................................... 32
Removing a 2.5-inch hard drive ........................................................................................................ 35
Installing a 2.5-inch hard drive ......................................................................................................... 37
Installing a security lock ...................................................................................................................................... 40
Cable lock ........................................................................................................................................... 40
Padlock .............................................................................................................................................. 40
HP Business PC Security Lock V2 ...................................................................................................... 41
v
Front bezel security ........................................................................................................................... 46
Appendix A Battery replacement ..................................................................................................................... 47
Appendix B Electrostatic discharge .................................................................................................................. 50
Preventing electrostatic damage ........................................................................................................................ 50
Grounding methods ............................................................................................................................................. 50
Appendix C Computer operating guidelines, routine care and shipping preparation ............................................. 51
Computer operating guidelines and routine care ............................................................................................... 51
Optical drive precautions ..................................................................................................................................... 52
Operation ........................................................................................................................................... 52
Cleaning ............................................................................................................................................. 52
Safety ................................................................................................................................................ 52
Shipping preparation ........................................................................................................................................... 52
Appendix D Accessibility ................................................................................................................................. 53
Supported assistive technologies ....................................................................................................................... 53
Contacting support .............................................................................................................................................. 53
Index ............................................................................................................................................................. 54
vi
1 Product features
Standard conguration features
Features may vary depending on the model. For support assistance and to learn more about the hardware
and software installed on your computer model, run the HP Support Assistant utility.
NOTE: This computer model can be used in a tower orientation or a desktop orientation.
Standard conguration features 1
Front panel components
Drive conguration may vary by model. Some models have a bezel blank covering the slim optical drive bay.
Front panel components
1 Slim optical drive (optional) 6 Audio-out (headphone) jack
2 USB 2.0 charging (powered) port (black) 7 Power button
3 USB 2.0 port (black) 8 Hard drive activity light
4 USB 3.0 ports (blue) 9 SD card reader (optional)
5 Audio-out (headphone)/Audio-in (microphone) combo
jack
NOTE: When a device is plugged into the Audio-out (headphone)/Audio-in (microphone) combo jack, a dialog box will pop
up asking if you want to use the jack for a microphone or a headphone. You can recongure the jack at any time by doubleclicking the Audio Manager icon in the Windows® taskbar.
NOTE: The USB 2.0 charging port 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 o.
NOTE: The Power On light is normally white when the power is on. If it is ashing 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.
2 Chapter 1 Product features
Rear panel components
Rear panel components
1 PS/2 mouse connector (green) 7 PS/2 keyboard connector (purple)
2 Serial port 8 DisplayPort monitor connectors
3 RJ-45 (network) jack 9 VGA monitor connector
4 USB 2.0 ports (black) with keyboard wakeup
function
5 Audio-in jack (blue) 11 USB 3.1 ports (blue)
6 Power cord connector 12 Audio-out jack for powered audio devices
NOTE: An optional second serial port and an optional parallel port are available from HP.
If using a USB keyboard, HP recommends connecting the keyboard to one of the USB 2.0 ports with the wakeup feature. The
wakeup feature is also supported on the PS/2 connector if enabled in BIOS F10 Setup.
When a device is plugged into the microphone/headphone jack, a dialog box will pop up asking if you want to use the jack for a
microphone or a headphone. You can recongure the jack at any time by double-clicking the Audio Manager icon in the
Windows taskbar.
When a graphics card is installed in one of the system board slots, the video connectors on the graphics card and/or the
integrated graphics on the system board may be used. The specic graphics card installed and software conguration will
determine the behavior.
The system board graphics can be disabled by changing settings in BIOS F10 Setup.
10 USB 3.1 ports (blue)
(green)
Rear panel components 3
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.
4 Chapter 1 Product features
2 Hardware upgrades
Serviceability features
The computer includes features that make it easy to upgrade and service. A Torx T15 or at-bladed
screwdriver is needed for some 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 re:
Disconnect the power cord from the AC 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.
IMPORTANT: 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 briey
touching a grounded metal object. See Electrostatic discharge on page 50 for more information.
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.
http://www.hp.com/ergo.
Serviceability features 5
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 compact discs or USB ash drives, from the computer.
3. Turn o the computer properly through the operating system, and turn o any external devices.
4. Disconnect the power cord from the AC outlet and disconnect any external devices.
IMPORTANT: 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. Pull up the access panel handle (1), and then lift the panel o the computer (2).
6 Chapter 2 Hardware upgrades
Replacing the computer access panel
Slide the tabs on the front end of the access panel under the lip on the front of the chassis (1), and then press
the back end of the access panel onto the chassis (2) so that it locks in place.
Replacing the computer access panel 7
Removing the front bezel
1. Remove/disengage any security devices that prohibit opening the computer.
2. Remove all removable media, such as compact discs or USB ash drives, from the computer.
3. Turn o the computer properly through the operating system, and turn o any external devices.
4. Disconnect the power cord from the AC outlet and disconnect any external devices.
IMPORTANT: 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. Remove the computer access panel.
7. Lift up the three tabs on the side of the bezel (1), and then rotate the bezel o the chassis (2).
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Removing a slim optical drive bezel blank
On some models, there is a bezel blank covering the slim optical drive bay. Remove the bezel blank before
installing an optical drive. To remove the bezel blank:
1. Remove the computer access panel and front bezel.
2. To remove the bezel blank, press inward on the three retaining tabs that hold the bezel blank in place
(1), and then rotate the bezel blank o the front bezel (2).
Removing a slim optical drive bezel blank 9
Replacing the front bezel
Insert the four hooks on the bottom side of the bezel into the rectangular holes on the chassis (1), and then
rotate the top side of the bezel onto the chassis (2) and snap it in place.
Cleaning the optional dust lter
Some models are equipped with a front bezel that includes a dust lter. You must periodically clean the dust
lter so that the dust collected on the lter does not impede air ow through the computer.
NOTE: The optional dust lter front bezel is available from HP.
To clean the dust lter:
1. Remove/disengage any security devices that prohibit opening the computer.
2. Remove all removable media, such as compact discs or USB ash drives, from the computer.
3. Turn o the computer properly through the operating system, and turn o any external devices.
4. Disconnect the power cord from the AC outlet and disconnect any external devices.
NOTE: 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 and front bezel.
10 Chapter 2 Hardware upgrades
7. To remove the dust lter access panel, press the right side of the lter access panel on the main bezel
(1), rotate the right side of the lter access panel o the main bezel (2), and then pull the left side of the
lter access panel out of the main bezel (3).
8. To remove the dust lter, lift the two separated ends of the lter (1), and then pull the lter o the lter
access panel (2).
9. Clean dust from the lter access panel with a soft brush or cloth. If heavily soiled, rinse the lter access
panel clean with water.
10. Clean the lter element with a soft brush or cloth. If heavily soiled, rinse the lter clean with water.
Cleaning the optional dust lter 11
11. To replace the dust lter, slide the right side of the lter onto the lter access panel (1), and then press
the lter onto the lter access panel (2) to secure it in place.
12. To replace the lter access panel, slide the left side of the lter access panel onto the main bezel (1), and
then press the right side of the lter access panel onto the main bezel (2) to secure it in place.
13. Replace the front bezel and computer access panel.
14. If the computer was on a stand, replace the stand.
15. Reconnect the power cord and any external devices, and then turn on the computer.
16. Lock any security devices that were disengaged when the access panel was removed.
12 Chapter 2 Hardware upgrades
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