CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

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.Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet and peripherals.

2.Open the system.

3.If applicable, remove the cooling shroud or the processor expansion module.

4.Locate the appropriate memory module socket(s).

CAUTION: Handle each memory module only by the card edges, making sure not to touch the middle of the memory module or gold contacts.

If a memory module blank is installed in the socket, remove it. Retain removed memory-module blank for future use.

5.Press down and out on the ejectors on each end of the socket until the memory module pops out of the socket.

Figure 17. Removing and Installing a Memory Module or Memory Module Blank

1.memory module

2.memory-module socket ejectors (2)

3.alignment key

6.Install memory-module blanks in vacant memory-module socket(s) to ensure proper system cooling.

7.If applicable, remove the cooling shroud or processor expansion module.

8.Close the system.

9.Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.

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Dell R820 owner manual