HP EliteDesk 800 G8 Maintenance and Service Guide - Page 33

Prepare the computer for disassembly see, Before replacing the memory modules, follow these steps

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The system automatically operates in single-channel mode, dual-channel mode, or flex mode, depending on how the DIMMs are installed. IMPORTANT: You must disconnect the power cord and wait approximately 30 seconds for the power to drain before adding or removing memory modules. Regardless of the power state, voltage is always supplied to the memory modules as long as the computer is plugged into an active AC outlet. Adding or removing memory modules while voltage is present can cause irreparable damage to the memory modules or system board. The memory module sockets have gold-plated metal contacts. When upgrading the memory, it is important to use memory modules with gold-plated metal contacts to prevent corrosion, oxidation, or both resulting from having incompatible metals in contact with each other. Static electricity can damage the electronic components of the computer or optional cards. Before beginning these procedures, be sure that you are discharged of static electricity by briefly touching a grounded metal object. For more information, see Electrostatic discharge information on page 12. When handling a memory module, be careful not to touch any of the contacts. Doing so can damage the module. Before replacing the memory modules, follow these steps: 1. Prepare the computer for disassembly (see Preparation for disassembly on page 21). 2. Remove the access panel (see Access panel on page 21). 3. Remove the optical drive (see Optical drive on page 27). 4. Remove the front bezel (see Front bezel on page 22). 5. Rotate the drive cage to the upright position (see Drive cage on page 23). Replace a memory module: 1. To remove a memory module, open both latches of the memory module socket (1), and then remove the memory module from the socket (2). Memory modules (DIMMs) 25

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The system automatically operates in single-channel mode, dual-channel mode, or flex mode, depending on
how the DIMMs are installed.
IMPORTANT:
You must disconnect the power cord and wait approximately 30 seconds for the power to drain
before adding or removing memory modules. Regardless of the power state, voltage is always supplied to the
memory modules as long as the computer is plugged into an active AC outlet. Adding or removing memory
modules while voltage is present can cause irreparable damage to the memory modules or system board.
The memory module sockets have gold-plated metal contacts. When upgrading the memory, it is important
to use memory modules with gold-plated metal contacts to prevent corrosion, oxidation, or both resulting
from having incompatible metals in contact with each other.
Static electricity can damage the electronic components of the computer or optional cards. Before beginning
these procedures, be sure that you are discharged of static electricity by briefly touching a grounded metal
object. For more information, see
Electrostatic discharge information
on page
12
.
When handling a memory module, be careful not to touch any of the contacts. Doing so can damage the
module.
Before replacing the memory modules, follow these steps:
1.
Prepare the computer for disassembly (see
Preparation for disassembly
on page
21
).
2.
Remove the access panel (see
Access panel
on page
21
).
3.
Remove the optical drive (see
Optical drive
on page
27
).
4.
Remove the front bezel (see
Front bezel
on page
22
).
5.
Rotate the drive cage to the upright position (see
Drive cage
on page
23
).
Replace a memory module:
1.
To remove a memory module, open both latches of the memory module socket
(1)
, and then remove the
memory module from the socket
(2)
.
Memory modules (DIMMs)
25