Dell PowerEdge T40 EMC Installation and Service Manual - Page 50

Removing a memory module

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• Populate memory module sockets only if a processor is installed. • Populate all the sockets with white release tabs first, followed by the black release tabs. • When mixing memory modules with different capacities, populate the sockets with memory modules with the highest capacity first. For example, if you want to mix 8 GB and 16 GB memory modules, populate 16 GB memory modules in the sockets with white release tabs and 8 GB memory modules in the sockets with black release tabs. • Memory modules of different capacities can be mixed provided other memory population rules are followed. For example, 8 GB and 16 GB memory modules can be mixed. • Mixing of more than two memory module capacities in a system is not supported. • Unbalanced memory configurations result in a performance loss so always populate memory channels identically with identical DIMMs for best performance. • To ensure proper system cooling, memory module blanks must be installed in memory sockets that are not occupied. Removing a memory module Prerequisites WARNING: Allow the memory modules to cool after you power off the system. Handle the memory modules by the card edges and avoid touching the components or metallic contacts on the memory module. CAUTION: To ensure proper system cooling, memory module blanks must be installed in any memory socket that is not occupied. Remove memory module blanks only if you intend to install memory modules in those sockets. 1. Follow the safety guidelines listed in Safety guidelines. 2. Follow the procedure listed in Before working inside your system. 3. Open the PSU assembly. Steps 1. Locate the appropriate memory module socket. CAUTION: Handle each memory module only by the card edges, ensuring not to touch the middle of the memory module or metallic contacts. 2. Push the ejectors outward on both ends of the memory module socket to release the memory module from the socket. 3. Lift and remove the memory module from the system. NOTE: If you are removing the memory module permanently, install a memory module blank. The procedure to install a memory module blank is similar to that of the memory module. Figure 27. Removing a memory module Next steps 1. Replace a memory module. 50 Installing and removing system components

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•
Populate memory module sockets only if a processor is installed.
•
Populate all the sockets with white release tabs first, followed by the black release tabs.
•
When mixing memory modules with different capacities, populate the sockets with memory modules with the highest capacity first.
For example, if you want to mix 8 GB and 16 GB memory modules, populate 16 GB memory modules in the sockets with white release
tabs and 8 GB memory modules in the sockets with black release tabs.
•
Memory modules of different capacities can be mixed provided other memory population rules are followed.
For example, 8 GB and 16 GB memory modules can be mixed.
•
Mixing of more than two memory module capacities in a system is not supported.
•
Unbalanced memory configurations result in a performance loss so always populate memory channels identically with identical DIMMs
for best performance.
•
To ensure proper system cooling, memory module blanks must be installed in memory sockets that are not occupied.
Removing a memory module
Prerequisites
WARNING:
Allow the memory modules to cool after you power off the system. Handle the memory modules by the card
edges and avoid touching the components or metallic contacts on the memory module.
CAUTION:
To ensure proper system cooling, memory module blanks must be installed in any memory socket that is not
occupied. Remove memory module blanks only if you intend to install memory modules in those sockets.
1.
Follow the safety guidelines listed in
Safety guidelines
.
2.
Follow the procedure listed in
Before working inside your system
.
3.
Open the PSU assembly
.
Steps
1.
Locate the appropriate memory module socket.
CAUTION:
Handle each memory module only by the card edges, ensuring not to touch the middle of the memory
module or metallic contacts.
2.
Push the ejectors outward on both ends of the memory module socket to release the memory module from the socket.
3.
Lift and remove the memory module from the system.
NOTE:
If you are removing the memory module permanently, install a memory module blank. The procedure to install
a memory module blank is similar to that of the memory module.
Figure 27. Removing a memory module
Next steps
1.
Replace a memory module
.
50
Installing and removing system components