HP EliteDesk 800 Operating and maintenance manual

HP Desktop Mini
Hardware Reference Guide

© Copyright 2018 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.
Second Edition: April 2018
First Edition: March 2018
Document Part Number: L21501-002
Product Notice
This guide describes features that are common
to most products. Some features may not be
available on your computer.
Not all features are available in all editions or
versions of Windows. Systems may require
upgraded and/or separately purchased
hardware, drivers, software or BIOS update to
take full advantage of Windows functionality.
Windows 10 is automatically updated, which is
always enabled. ISP fees may apply and
additional requirements may apply over time
for updates. Go to http://www.microsoft.com
for details.
To access the latest user guides, go to
http://www.hp.com/support, and follow the
instructions to nd your product. Then select
User Guides.
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 seller.
For any further information or to request a full
refund of the price of the computer, please
contact your seller.

About This Book
This guide provides basic information for upgrading the HP Desktop Mini 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 conguration features ........................................................................................................................... 1
Front panel components (HP EliteDesk 800 and HP ProDesk 600) ...................................................................... 2
Front panel components (HP ProDesk 400) .......................................................................................................... 3
Rear panel components ......................................................................................................................................... 4
Serial number location .......................................................................................................................................... 5
2 Setup ............................................................................................................................................................ 6
Changing from desktop to tower orientation ........................................................................................................ 6
Attaching the computer to a mounting xture ..................................................................................................... 7
Installing a security cable ...................................................................................................................................... 8
Connecting the power cord .................................................................................................................................... 8
3 Hardware upgrades ....................................................................................................................................... 9
Serviceability features ........................................................................................................................................... 9
Warnings and cautions .......................................................................................................................................... 9
Removing and installing the access panel .......................................................................................................... 10
Removing the access panel ............................................................................................................... 10
Installing the access panel ................................................................................................................ 11
Removing and installing the access panel of the HP EliteDesk 800 35W .......................................................... 11
Removing the access panel of the HP EliteDesk 800 35W ............................................................... 11
Installing the access panel of the HP EliteDesk 800 35W ................................................................ 13
Upgrading system memory ................................................................................................................................. 14
Memory module specications ......................................................................................................... 14
Populating memory module slots .................................................................................................... 15
Installing a memory module ............................................................................................................. 16
Removing a hard drive ......................................................................................................................................... 19
Installing a hard drive .......................................................................................................................................... 20
Replacing an M.2 PCIe solid-state drive .............................................................................................................. 21
Replacing the WLAN module ............................................................................................................................... 24
Installing an external antenna ............................................................................................................................ 27
v

Replacing the battery .......................................................................................................................................... 30
Synchronizing the optional wireless keyboard and mouse ................................................................................ 34
Appendix A Electrostatic discharge .................................................................................................................. 36
Preventing electrostatic damage ........................................................................................................................ 36
Grounding methods ............................................................................................................................................. 36
Appendix B Computer operating guidelines, routine care and shipping preparation ............................................. 37
Computer operating guidelines and routine care ............................................................................................... 37
Shipping preparation ........................................................................................................................................... 38
Appendix C Accessibility ................................................................................................................................. 39
Supported assistive technologies ....................................................................................................................... 39
Contacting support .............................................................................................................................................. 39
Index ............................................................................................................................................................. 40
vi

1 Product features
Standard conguration 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 conguration features 1

Front panel components (HP EliteDesk 800 and HP ProDesk 600)
NOTE: Your computer model may look slightly dierent from the illustration in this section.
Item Icon Component Item Icon Component
1 USB Type-C SuperSpeed port with HP Sleep and
Charge*
5Audio-out (headphone)/Audio-in
(microphone) combo jack
2USB SuperSpeed port 6 Main storage LED
3USB SuperSpeed port with HP Sleep and
Charge*
7Dual-state power button
4Headphone jack
*When the computer is on, the USB port connects a USB device, provides high-speed data transfer, and even when the computer is o,
charges products such as a cell phone, camera, activity tracker, or smartwatch.
NOTE: The main storage LED is normally white when the power is on. If it is ashing red, there is a problem with the computer and
the main storage LED is displaying a diagnostic code. Refer to the Maintenance and Service Guide to interpret the code.
2 Chapter 1 Product features

Front panel components (HP ProDesk 400)
NOTE: Your computer model may look slightly dierent from the illustration in this section.
Item Icon Component Item Icon Component
1USB Type-C SuperSpeed port 4Audio-out (headphone)/Audio-in
(microphone) combo jack
2USB Type-C SuperSpeed port with HP Sleep and
Charge*
5 Main storage LED
3Headphone jack 6Dual-state power button
*When the computer is on, the USB port connects a USB device, provides high-speed data transfer, and even when the computer is o,
charges products such as a cellphone, camera, activity tracker, or smartwatch.
NOTE: The main storage LED is normally white when the power is on. If it is ashing red, there is a problem with the computer and
the main storage LED is displaying a diagnostic code. Refer to the Maintenance and Service Guide to interpret the code.
Front panel components (HP ProDesk 400) 3

Rear panel components
NOTE: Your computer model may look slightly dierent from the illustration in this section.
Item Icon Component Item Icon Component
1 Antenna cover 7USB SuperSpeed port
2 Thumbscrew 8 Optional port
One of the following ports may be used:
DisplayPort, HDMI, VGA, USB Type-C, serial
port, Thunderbolt, or Fiber NIC.
3Security cable slot 9USB ports (2) (black)
4 External antenna connector (optional) 10 RJ-45 (network) jack/status lights
5 Padlock loop 11 Power connector
6Dual-Mode DisplayPort (2)
4 Chapter 1 Product features

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 support for assistance.
Serial number location 5

2 Setup
Changing from desktop to tower orientation
IMPORTANT: Be sure that at least 10.2 centimeters (4 inches) of space on all sides of the computer remains
clear and free of obstructions.
The computer can be used in a tower orientation with an optional tower stand that can be purchased from HP.
NOTE: To stabilize the computer in a tower orientation, HP recommends the use of the optional tower
stand.
1. Remove/disengage any security devices that prohibit opening the computer.
2. Remove all removable media, such as a USB ash drive, from the computer.
3. Turn o the computer properly through the operating system, then turn o any external devices.
4. Disconnect the power cord from the AC 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. To avoid damage to the internal components of the
computer, you must disconnect the power cord.
5. Orient the computer so that its right side is facing up, and place the computer in the optional stand.
6. Reconnect the power cord and any external devices, then turn on the computer.
6 Chapter 2 Setup

IMPORTANT: Be sure that 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.
Attaching the computer to a mounting xture
The computer can be attached to a wall, swing arm, or other mounting xture.
NOTE: This apparatus is intended to be supported by UL or CSA Listed wall-mount bracket.
1. If the computer is on a stand, remove the computer from the stand and position the computer right-side
up on a stable surface.
2. To attach the computer to a swing arm (sold separately), insert four screws through the holes on the
swing arm plate and into the mounting holes on the computer.
CAUTION: This computer supports the VESA industry standard 100 mm mounting holes. To attach a
third-party mounting solution to the computer, use the screws that are supplied with the solution. It is
important to verify that the manufacturer’s mounting solution is compliant with the VESA standard and
is rated to support the weight of the computer. For best performance, it is important to use the power
cord and other cables provided with the computer.
To attach the computer to other mounting xtures, follow the instructions included with the mounting
xture to ensure that the computer is safely attached.
Attaching the computer to a mounting xture 7

Installing a security cable
The security cable displayed below can be used to secure the computer.
NOTE: The security cable is designed to act as a deterrent, but it may not prevent the computer from being
mishandled or stolen.
Connecting the power cord
When connecting the AC adapter, it is important to follow the steps below to ensure that the power cord does
not pull free from the computer.
1. Connect the power cord to the AC adapter (1).
2. Plug the power cord into an AC outlet (2).
3. Connect the AC adapter to the power connector on the rear of the computer (3).
8 Chapter 2 Setup

3 Hardware 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 re:
Disconnect the power cord from the AC outlet and allow the internal system components to cool before
touching.
Do not connect telecommunications or telephone connectors to 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) AC 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 http://www.hp.com/ergo.
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 briey touching a
grounded metal object. See Electrostatic discharge on page 36 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.
NOTE: Your computer model may look slightly dierent from the illustrations in this chapter.
Serviceability features 9

Removing and installing the access panel
NOTE: For the HP EliteDesk 800 35W, see Removing and installing the access panel of the HP EliteDesk 800
35W on page 11.
Removing the access panel
To access internal components, you must remove the access panel:
WARNING! To reduce risk of personal injury from hot surfaces, allow the internal system components to
cool before you touch them.
1. Remove/disengage any security devices that prohibit opening the computer.
2. Remove all removable media, such as a USB ash drive, from the computer.
3. Turn o the computer properly through the operating system, then turn o any external devices.
4. Disconnect the power cord from the AC 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. Then position the computer right-
side up on a stable surface.
6. Loosen the thumbscrew (1) on the rear panel as shown in the following image.
NOTE: If necessary, a Torx T-15 screwdriver may be used to loosen the thumbscrew.
7. Slide the access panel forward, and lift it o the computer (2).
WARNING! To reduce risk of personal injury from hot surfaces, allow the internal system components
to cool before you touch them.
NOTE: Your computer model may look slightly dierent from the illustrations in this section.
10 Chapter 3 Hardware upgrades

Installing the access panel
1. Place the access panel on the computer and slide it back (1).
2. When the access panel slides into place, tighten the thumbscrew (2) to secure the access panel in place
as shown in the following image.
NOTE: Your computer model may look slightly dierent from the illustration in this section.
Removing and installing the access panel of the HP EliteDesk
800 35W
NOTE: For models other than the HP EliteDesk 800 35W, see Removing and installing the access panel
on page 10.
Removing the access panel of the HP EliteDesk 800 35W
To access internal components, you must remove the access panel and the discrete graphics processing unit
(DGPU):
1. Remove/disengage any security devices that prohibit opening the computer.
2. Remove all removable media, such as a USB ash drive, from the computer.
3. Turn o the computer properly through the operating system, then turn o any external devices.
4. Disconnect the power cord from the AC 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. Then position the computer right-
side up on a stable surface.
6. Loosen the thumbscrew (1) on the rear panel as shown in the following image.
NOTE: If necessary, a Torx T-15 screwdriver may be used to loosen the thumbscrew.
Removing and installing the access panel of the HP EliteDesk 800 35W 11

7. Slide the access panel forward, and lift it o the computer (2).
WARNING! To reduce risk of personal injury from hot surfaces, allow the internal system components
to cool before you touch them.
NOTE: Your computer model may look slightly dierent from the illustrations in this section.
8. Disconnect the fan cable (1) from the system board.
9. Remove the three screws (2) securing the DGPU to the system board.
12 Chapter 3 Hardware upgrades

10. Lift the DGPU up by the tab at the fan end and pull the DGPU up out of the chassis.
Installing the access panel of the HP EliteDesk 800 35W
This procedure includes installing the DGPU and the access panel.
1. Set the DGPU into the chassis and secure it to the system board with three screws: two screws at the fan
end of the DGPU and one screw at the inner corner of the opposite end of the DGPU (1).
2. Plug the fan cable into the connector (2) on the system board.
3. Place the access panel on the computer and slide it back (1).
Removing and installing the access panel of the HP EliteDesk 800 35W 13

4. When the access panel slides into place, tighten the thumbscrew (2) to secure the access panel in place
as shown in the following image.
NOTE: Your computer model may look slightly dierent from the illustration in this section.
Upgrading system memory
The computer comes with at least one small outline, dual in-line memory module (SODIMM). To achieve
maximum memory support, you can populate the system board with up to 32 GB of memory.
Memory module specications
For proper system operation, the memory modules must adhere to the following specications.
Component Specication
Memory modules 1.2 volt DDR4-SDRAM memory modules
Compliance Unbuered non-ECC PC4-17000 DDR4-2133 MHz-compliant
Pins Industry-standard 260-pin containing the mandatory Joint Electronic Device Engineering
Council (JEDEC) specication
Support CAS latency 15 DDR4 2400 MHz (15-15-15 timing)
Slots 2
Maximum Memory 32 GB
Supported 2 Gbit, 4 Gbit, 8 Gbit, and 16 Gbit non-ECC memory technologies single-sided and double-
sided memory modules
NOTE: The system does not operate properly if you install unsupported memory modules. Memory modules constructed with x8 and
x16 DDR devices are supported; memory modules constructed with x4 SDRAM are not supported.
HP oers upgrade memory for this computer and advises that the consumer purchase it to avoid
compatibility issues with unsupported third-party memory.
14 Chapter 3 Hardware upgrades