HP EliteDesk 800 G4 Base Model Small Form Factor PC User Manual

Hardware Reference GuideHP EliteDesk 800 G4 SFF Business PC

2 Hardware upgradesServiceability featuresThe computer includes features that make it easy to upgrade and service. A Torx T15 or at-bladed screwdrive

Removing the computer access panelTo access internal components, you must remove the access panel.1. Remove/disengage any security devices that prohib

Replacing the computer access panelBe sure that the access panel release lever is locked into place, and then place the access panel on the computer (

Removing the front bezel1. Remove/disengage any security devices that prohibit opening the computer.2. Remove all removable media, such as compact dis

Removing a slim optical drive bezel blankOn some models, a bezel blank covers the slim optical drive bay. Remove the bezel blank before installing an

Replacing the front bezelInsert the three hooks on the bottom of the bezel into the rectangular holes on the chassis (1), and then rotate the top of t

Removing and installing the optional front bezel dust lterSome models are equipped with an optional front bezel dust lter. You must periodically cle

5. To replace the dust lter, press the lter rmly onto the front bezel at the tab locations shown below.6. Reconnect the power cord and any external

Changing from desktop to tower orientationThe Small Form Factor computer can be used in a tower orientation with an optional tower stand that can be p

System board connectionsRefer to the following illustration and table to identify the system board connectors for your model.Item System board connect

© Copyright 2018 HP Development Company, L.P.The information contained herein is subject to change without notice. The only warranties for HP products

Upgrading system memoryThe computer comes with double data rate 4 synchronous dynamic random access memory (DDR4-SDRAM) dual inline memory modules (DI

DIMM and one 1 GB DIMM, and Channel B should be populated with the other two 1 GB DIMMs. With this conguration, 4 GB will run as dual-channel and 1 G

7. Open both latches of the memory module socket (1), and insert the memory module into the socket (2). Press the module down into the socket, ensurin

Removing or installing an expansion cardThe computer has two PCI Express x1 expansion sockets, one PCI Express x16 expansion socket, and one PCI Expre

NOTE: Before removing an installed expansion card, disconnect any cables that may be attached to the expansion card.a. If you are installing an expans

c. If you are removing a PCI Express x16 card, pull the retention arm on the back of the expansion socket away from the card (1) and carefully rock th

12. To install a new expansion card, hold the card just above the expansion socket on the system board then move the card toward the rear of the chass

15. Replace the computer access panel.16. If the computer was on a stand, replace the stand.17. Reconnect the power cord and any external devices, and

IMPORTANT: To prevent loss of work and damage to the computer or drive:If you are inserting or removing a drive, shut down the operating system proper

8. Push the green release latch on the right rear side of the drive toward the center of the drive (1), and then slide the drive forward and out of th

About This GuideThis guide provides basic information for upgrading the HP EliteDesk Business PC.WARNING! Indicates a hazardous situation that, if not

Installing a 9.5 mm slim optical drive1. Remove/disengage any security devices that prohibit opening the computer.2. Remove all removable media, such

9. Slide the optical drive through the front bezel all the way into the bay (1) so that the latch on the rear of the drive locks into place (2).10. Co

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 acces

8. Pull the release lever next to the rear of the hard drive outward (1). While pulling the release lever out, lift the rear of the drive up (2), and

Installing a 3.5-inch hard driveNOTE: There are two 3.5-inch hard drive bays. The procedure for installing a 3.5-inch hard drive is the same for each

– Secure the drive to the bay adapter bracket by installing four black M3 adapter bracket screws through the underside of the bracket and into the dri

– Install four 6-32 silver-and-blue mounting screws in the adapter bracket (two on each side of the bracket).8. Align the mounting screws on the front

9. Connect the power cable (1) and data cable (2) to the rear of the hard drive.NOTE: If the 3.5-inch hard drive is the primary drive, connect the oth

Removing a 2.5-inch hard drive1. Remove/disengage any security devices that prohibit opening the computer.2. Remove all removable media, such as compa

9. Disconnect the power cable (1) and data cable (2) from the rear of the hard drive.10. Pull the release lever at the rear of the drive outward (1).

iv About This Guide

Installing a 2.5-inch hard drive1. Remove/disengage any security devices that prohibit opening the computer.2. Remove all removable media, such as com

9. Rotate the drive cage to its upright position.10. Align the mounting screws on the drive with the J-slots on the sides of the drive bay. Press the

11. Connect the power cable (1) and data cable (2) to the rear of the hard drive.NOTE: If the 2.5-inch hard drive is the primary drive, connect the ot

14. Replace the computer access panel.15. If the computer was on a stand, replace the stand.16. Reconnect the power cord and any external devices, and

9. To remove an M.2 SSD card, remove the screw that secures the card (1), lift the end of the card up (2), and then slide the card out of the system b

11. Rotate the drive cage back down to its normal position.IMPORTANT: Be careful not to pinch any cables or wires when rotating the drive cage down.12

Installing a security lockThe security locks displayed below and on the following pages can be used to secure the computer.Cable lockPadlock40 Chapter

HP Business PC Security Lock V2The HP PC Security Lock V2 is designed to secure all of the devices at your workstation.1. Attach the security cable fa

3. Slide the security cable through the security cable fastener.4. Pull the two scissor hands of the monitor lock apart and insert the lock into the s

5. Slide the security cable through the security guide installed on the monitor.6. Attach the accessory cable fastener to a desktop using the appropri

Table of contents1 Product features ...

7. Slide the security cable through the holes in the accessory cable fastener.8. Screw the lock to the chassis using the screw provided.44 Chapter 2

9. Insert the plug end of the security cable into the lock (1) and push the button in (2) to engage the lock. Use the key provided to disengage the lo

A Battery replacementThe battery that comes with the computer provides power to the real-time clock. When replacing the battery, use a battery equival

b. Slide the replacement battery into position, positive side up. The battery holder automatically secures the battery in the proper position.Type 2a.

b. To insert the new battery, slide one edge of the replacement battery under the holder’s lip with the positive side up (1). Push the other edge down

11. Reconnect the power cord and any external devices, and then turn on the computer.12. Reset the date and time, your passwords, and any special syst

B Electrostatic dischargeA discharge of static electricity from a nger or other conductor may damage system boards or other static-sensitive devices.

C Computer operating guidelines, routine care and shipping preparationComputer operating guidelines and routine careFollow these guidelines to properl

Optical drive precautionsBe sure to observe the following guidelines while operating or cleaning the optical drive.Operation● Do not move the drive du

D AccessibilityHP designs, produces, and markets products and services that can be used by everyone, including people with disabilities, either on a s

Appendix B Electrostatic discharge ...

IndexAaccess panelremoval 5replacement 6accessibility 53Bbattery replacement 46Ccomputer operating guidelines 51Ddrivescable connections 21installatio

1 Product featuresStandard conguration featuresFeatures may vary depending on the model. For support assistance and to learn more about the hardware

Front panel componentsDrive conguration may vary by model. Some models have a bezel blank covering the slim optical drive bay.Front panel components1

Rear panel componentsRear panel components1 Audio-in jack 6 DisplayPort monitor connectors (2)2 Serial port (optional) 7 Optional port3 RJ-45 (netwo