HP EliteDesk 800 G5 Maintenance and Service Guide - Page 35

Removing and installing DIMMs, IMPORTANT

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GB DIMM, and Channel B should be populated with the other two 1-GB DIMMs. With this configuration, 4 GB runs as dual-channel and 1 GB runs as single-channel. ● In any mode, the maximum operational speed is determined by the slowest DIMM in the system. 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-on 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 may 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 or oxidation 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, ensure that you are discharged of static electricity by briefly touching a grounded metal object. For more information, refer to Electrostatic discharge information on page 10. When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the module. Removing and installing DIMMs 1. Prepare the computer for disassembly (Preparation for disassembly on page 18). 2. Remove the access panel (Access panel on page 19). 3. To remove a memory module, open both latches (1) of the memory module socket, and then remove the memory module from the socket (2). 4. To install a memory module, open both latches (1) of the memory module socket, and insert the memory module into the socket (2). Memory 25

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GB DIMM, and Channel B should be populated with the other two 1-GB DIMMs. With this configuration, 4
GB runs as dual-channel and 1 GB runs as single-channel.
●
In any mode, the maximum operational speed is determined by the slowest DIMM in the system.
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-on 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 may 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 or oxidation 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, ensure that you are discharged of static electricity by briefly touching a grounded metal
object. For more information, refer to
Electrostatic discharge information
on page
10
.
When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the
module.
Removing and installing DIMMs
1.
Prepare the computer for disassembly (
Preparation for disassembly
on page
18
).
2.
Remove the access panel (
Access panel
on page
19
).
3.
To remove a memory module, open both latches
(1)
of the memory module socket, and then remove the
memory module from the socket
(2)
.
4.
To install a memory module, open both latches
(1)
of the memory module socket, and insert the
memory module into the socket
(2)
.
Memory
25