Dell PowerEdge M420 Hardware Owner's Manual - Page 195

6 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 way. 7 Press down on the memory module with your thumbs to lock the memory module into the socket. When the memory module is properly seated in the socket, the ejectors on the memory module socket align with the ejectors on the other sockets that have memory modules installed. 8 Repeat step 5 through step 7 of this procedure to install the remaining memory modules. See Table 3-13, Table 3-10, or Table 3-11 for sample memory configurations. 9 PowerEdge M910 and M905 systems only - If you removed the system board to access the memory modules, reinstall the system board. 10 Close the blade. See "Closing the Blade" on page 159. 11 Install the blade. See "Installing a Blade" on page 148. 12 (Optional) Press to enter the System Setup program, and check the System Memory setting on the main System Setup screen. The system should have already changed the value to reflect the newly installed memory. 13 If the value is incorrect, one or more of the memory modules may not be installed properly. Check to ensure that the memory modules are firmly seated in their sockets. 14 Run the system memory test in the system diagnostics. See "Running System Diagnostics" on page 303. Removing Memory Modules WARNING: The DIMMs are hot to the touch for some time after the blade has been powered down. Allow time for the DIMMs to cool before handling them. Handle the DIMMs by the card edges and avoid touching the DIMM components. 1 Remove the blade. See "Removing a Blade" on page 145. 2 Open the blade. See "Opening the Blade" on page 149. 3 Locate the memory module sockets. See Figure 7-12 or Figure 7-11. Installing Blade Components 195