Dell EMC PowerEdge R840 Installation and Service Manual

Installing a memory module

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.
CAUTION To prevent damage to the memory module or the memory module socket during installation, do not bend or flex the memory module. You must insert both ends of the memory module simultaneously.
Open the ejectors on the memory module socket outward to allow the memory module to be inserted into the socket.
Align the edge connector of the memory module with the alignment key of the memory module socket, and insert the memory module in the socket.
CAUTION Do not apply pressure at the center of the memory module; apply pressure at both ends of the memory module evenly.
NOTE The memory module socket has an alignment key that enables you to install the memory module in the socket in only one orientation.
Press the memory module with your thumbs until the socket levers firmly click into place.
Figure 1. Installing a memory module

Install the applicable air shroud:
- GPU air shroud
OR
- Non-GPU air shroud
Follow the procedure listed in After working inside your system.
Verify if the memory module has been installed properly, by pressing F2 and navigating to System Setup Main Menu > System BIOS > Memory Settings. In the Memory Settings screen, the System Memory Size must reflect the updated capacity of the installed memory. If the value is incorrect, one or more of the memory modules may not be installed properly. Ensure that the memory module is firmly seated in the memory module socket. Run the system memory test in system diagnostics.