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).
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
iv About This Book
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
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
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
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.