Dell PowerEdge R920 Owner's Manual page 53

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.
2. Open the system.
3. Locate and remove the memory riser.
4. Push the DIMM release tabs on the memory riser and lift the memory riser cover in the direction of the arrows.
5. Locate the memory-module sockets.
CAUTION: Handle each memory module only by the card edges, making sure not to touch the middle of the
memory module or metallic contacts. To avoid damaging the memory module, handle only one memory
module at a time.
6. If a memory module or a memory-module blank is installed in the socket, remove it.
NOTE: Retain removed memory-module blank(s) for future use.
7. Align the memory-module's edge connector with the alignment key on the memory-module socket, and insert the
memory module in the socket.
NOTE: The memory-module socket has an alignment key that allows you to install the memory module in the
socket in only one orientation.
CAUTION: To prevent damage to the memory-module socket during installation, apply pressure at both ends
of the memory module evenly. Do not apply pressure to the center of the memory module.
8. Press down on the memory module with your thumbs until the memory module snaps into place.
Figure 20. Installing The Memory Module
1. memory module
3. memory-module socket alignment key
NOTE: When the memory module is properly seated in the socket, the levers on the memory-module socket
align with the levers on the other identical sockets that have memory modules installed.
9. Repeat step 5 through step 8 of this procedure to install the remaining memory modules.
10. Close the memory riser cover.
11. Install the memory riser.
12. Close the system.
2. memory-module ejectors
4. memory-module alignment key
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