Hewlett Packard 4KX21ET User Manual
Hardware Reference Guide
HP EliteOne 800 G4 23-inch All-in-One Business PC
© Copyright 2018 HP Development Company,
L.P.
Windows is either a trademark or registered
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.
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 HP
Development Company.
Second Edition: June 2018
First Edition: June 2018
Document part number: L19726-002
About This Book
This guide provides basic information for upgrading this computer model.
WARNING! Text set o in this manner indicates that failure to follow directions could result in bodily harm or
loss of life.
CAUTION: Text set o in this manner indicates that failure to follow directions could result in damage to
equipment or loss of information.
NOTE: Text set o in this manner provides important supplemental information.
iii
iv About This Book
Table of contents
1 Product features ........................................................................................................................................... 1
Overview ................................................................................................................................................................ 1
HP EliteOne 800 G4 front components ................................................................................................................. 1
HP EliteOne 800 G4 Healthcare front components ............................................................................................... 2
Top components .................................................................................................................................................... 2
Infrared (IR) webcam (optional) .......................................................................................................... 2
Full High Denition (FHD) webcam (optional) ..................................................................................... 3
Side components ................................................................................................................................................... 3
Rear components ................................................................................................................................................... 4
Bottom components .............................................................................................................................................. 4
Keyboard features ................................................................................................................................................. 5
Labels ..................................................................................................................................................................... 6
2 Setup ............................................................................................................................................................ 7
Overview ................................................................................................................................................................ 7
Attaching and removing a stand ............................................................................................................................ 7
Attaching and removing a recline stand ............................................................................................. 7
Attaching a recline stand .................................................................................................. 7
Removing a recline stand .................................................................................................. 8
Attaching and removing an adjustable height stand .......................................................................... 9
Attaching an adjustable height stand ............................................................................... 9
Removing an adjustable height stand .............................................................................. 9
Attaching the computer to a mounting xture ................................................................................................... 10
Connecting and disconnecting cables ................................................................................................................. 11
Connecting cables ............................................................................................................................. 11
Connecting a display ......................................................................................................................... 11
Disconnecting cables ......................................................................................................................... 12
Removing and installing the rear port cover ....................................................................................................... 12
Removing the rear port cover ........................................................................................................... 12
Installing the rear port cover ............................................................................................................ 13
Positioning the computer .................................................................................................................................... 14
Adjusting a recline stand ................................................................................................................... 14
Adjusting an adjustable height stand ............................................................................................... 15
Installing a security cable .................................................................................................................................... 18
Connecting and disconnecting power ................................................................................................................. 19
Connecting power .............................................................................................................................. 19
v
Disconnecting power ......................................................................................................................... 19
Webcam ............................................................................................................................................................... 19
Webcam operation ............................................................................................................................ 19
Setting up Windows Hello ................................................................................................................. 20
Using RFID (select products only) ........................................................................................................................ 20
Synchronizing the optional wireless keyboard and mouse ................................................................................ 21
3 Hardware repair and upgrade ....................................................................................................................... 23
Warnings and cautions ........................................................................................................................................ 23
Additional information ........................................................................................................................................ 23
Removing batteries from the optional wireless keyboard or mouse ................................................................. 24
Removing and replacing the computer access panel .......................................................................................... 25
Removing the computer access panel .............................................................................................. 25
Replacing the computer access panel ............................................................................................... 26
Locating internal components ............................................................................................................................ 27
Removing and installing memory ....................................................................................................................... 27
Memory module specications ......................................................................................................... 27
Populating memory module slots .................................................................................................... 28
Installing memory modules .............................................................................................................. 28
Replacing the RTC Battery ................................................................................................................................... 29
Replacing drives ................................................................................................................................................... 30
Replacing a hard drive ....................................................................................................................... 30
Removing a hard drive .................................................................................................... 30
Installing a 2.5 inch hard disk drive ................................................................................ 32
Replacing the optical disc drive ........................................................................................................ 33
Appendix A Electrostatic discharge .................................................................................................................. 35
Preventing electrostatic damage ........................................................................................................................ 35
Grounding methods ............................................................................................................................................. 35
Appendix B Computer operating guidelines, routine care, and shipping preparation ............................................ 36
Computer operating guidelines and routine care ............................................................................................... 36
Optical disc drive precautions ............................................................................................................................. 38
Shipping preparation ........................................................................................................................................... 38
Appendix C Accessibility ................................................................................................................................. 39
Supported assistive technologies ....................................................................................................................... 39
Contacting support .............................................................................................................................................. 39
Index ............................................................................................................................................................. 40
vi
1 Product features
Overview
NOTE: For the latest manuals on this product, go to http://www.hp.com/support. Select Find your product,
and then follow the on-screen instructions.
This product employs electronic labeling for indication of regulatory mark or statement. See Labels
on page 6 for the operation to display.
HP EliteOne 800 G4 front components
Component
1 Webcam
2 Speakers (select products only)
Overview 1
HP EliteOne 800 G4 Healthcare front components
Component Component
1 Webcam 3 Speakers (2)
2 Fingerprint reader (select products only) 4 Radio Frequency identication (RFID) tapping area and
antenna*
*The antenna is not visible from the outside of the computer. For optimal transmission, keep the area immediately around the antenna
free from obstructions.
For wireless regulatory notices, see the section of the Regulatory, Safety, and Environmental Notices that applies to your country or
region.
To access this guide:
▲ Select the Start button, select HP Help and Support, and then select HP Documentation.
‒ or –
▲ Select the Start button, select HP, and then select HP Documentation.
Top components
Infrared (IR) webcam (optional)
Component Component
Front View
1 Webcam light 4 IR webcam
2 IR light 5 Rear webcam adjustment wheel
3 Full High Denition (FHD) webcam
Top view
6 Digital microphones
Rear view
7 Webcam light 8 FHD webcam
2 Chapter 1 Product features
Full High Denition (FHD) webcam (optional)
Component
Front view
1 Webcam light
2 FHD webcam
Top view
3 Digital microphones
Side components
Component Component
1 Optical disc drive (optional) 4 Audio-out (headphone)/Audio-in (microphone) combo jack
2 Optical disc drive light (select products only) 5 Audio-out (headphone) jack
3 Optical disc drive eject button (optional) 6 Fingerprint reader (select products only)
Side components 3
Rear components
Component Component
1 DisplayPort 6 USB 3.1 Type-A ports (2)
2 HDMI port 7 Stereo audio-out jack
3 USB 3.1 Type-A ports (2) 8 Security lock screws
4 Power connector 9 Stand release
5 RJ-45 (network) jack 10 Security cable slot
Bottom components
Component Component
1 USB 3.1 Type-A port 4 USB 3.1 Type-C port
2 USB 3.1 Type-A (charging) port 5 Hard drive activity light
3 SD card reader 6 Power button
4 Chapter 1 Product features
Keyboard features
Your keyboard and mouse may be dierent.
Component Component
1 Sleep 6 Mute Volume
2 Fast Reverse 7 Decrease Volume
3 Play/Pause 8 Increase Volume
4 Stop 9 Function
5 Fast Forward
Keyboard features 5
Labels
The labels aixed to the computer provide information you may need when you troubleshoot system
problems or travel internationally with the computer.
IMPORTANT: All labels described in this section will be located under the stand or aixed to the bottom of
the computer.
1. Microsoft® Certicate of Authenticity label (select models only prior to Windows 8)—Contains the
Windows Product Key. You may need the Product Key to update or troubleshoot the operating system.
HP platforms preinstalled with Windows 8 or Windows 8.1 do not have the physical label, but have a
Digital Product Key electronically installed.
NOTE: This Digital Product Key is automatically recognized and activated by Microsoft Operating
Systems on a reinstall of the Windows 8 or Windows 8.1 operating system with HP-approved recovery
methods.
2. Service label—Provides important information to identify your computer. When contacting support, you
will probably be asked for the serial number, and possibly for the product number or the model number.
Locate these numbers before you contact support.
Component
(1) Serial number
(2) Product number
(3) Warranty period
3. Serial number label
6 Chapter 1 Product features
2 Setup
Overview
Set up the computer in the following order:
● Attach a stand. See Attaching and removing a stand on page 7.
Or
Attach the computer to a mounting xture. See Attaching the computer to a mounting xture
on page 10.
● Connect the cables for peripherals and power. See Connecting and disconnecting cables on page 11.
● Connect an additional display, if desired. See Connecting a display on page 11.
● Install and secure the rear port cover. See Installing the rear port cover on page 13.
● Select a comfortable computer position and viewing angle. See Positioning the computer on page 14.
● Install a security cable for security. See Installing a security cable on page 18.
● Turn on the power. See Connecting power on page 19.
● The mouse and keyboard are synchronized at the factory. Should you ever need to synchronize the
mouse and keyboard again, see Synchronizing the optional wireless keyboard and mouse on page 21.
Attaching and removing a stand
Two stands are available for the computer:
●
Attaching and removing a recline stand
●
Attaching and removing an adjustable height stand
Attaching and removing a recline stand
Attaching a recline stand
To install the stand:
1. Place the computer facedown on a soft at surface. HP recommends that you set down a blanket, towel,
or other soft cloth to protect the bezel and screen surface from scratches or other damage.
2. Engage the hooks in the top of the stand in the two large holes in the upper part of the back of the
computer (1).
Overview 7
3. Lower the stand onto the computer and press down until it clicks into place (2).
Removing a recline stand
To remove the stand:
1. Remove all removable media, such as optical discs or USB ash drives, from the computer.
2. Turn o the computer properly through the operating system, then turn o any external devices.
3. Disconnect the AC power cord from the AC outlet and disconnect any external devices.
4. Place the computer facedown on a soft at surface. HP recommends that you set down a blanket, towel,
or other soft cloth to protect the bezel and screen surface from scratches or other damage.
5. Remove the rear port cover, if it is installed. For instructions, see Removing the rear port cover
on page 12.
6. Press the release latch under the stand (1).
7. Lift the stand up (2), and then pull the stand hooks out of the computer (3).
8 Chapter 2 Setup
Attaching and removing an adjustable height stand
Attaching an adjustable height stand
To install the stand:
1. Place the computer facedown on a soft at surface. HP recommends that you set down a blanket, towel,
or other soft cloth to protect the bezel and screen surface from scratches or other damage.
2. Engage the hooks in the top of the stand in the two large holes in the upper part of the back of the
computer (1).
3. Lower the stand onto the computer and press down until it clicks into place (2).
Removing an adjustable height stand
To remove the stand:
1. Remove all removable media, such as optical discs or USB ash drives, from the computer.
2. Turn o the computer properly through the operating system, then turn o any external devices.
3. Disconnect the AC power cord from the AC outlet and disconnect any external devices.
4. Place the computer facedown on a soft at surface. HP recommends that you set down a blanket, towel,
or other soft cloth to protect the bezel and screen surface from scratches or other damage.
5. Remove the rear port cover, if it is installed. For instructions, see Removing the rear port cover
on page 12.
6. Press the release latch under the stand (1).
7. Lift the stand up (2), and then pull the stand hooks out of the computer (3).
Attaching and removing a stand 9
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