Dell PowerEdge M910 - Manual (Page 214)

214 Installing Blade Components
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 3-14, Table 3-11, or Table 3-12 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 161.
11 Install the blade. See "Installing a Blade" on page 158.
12 (Optional) Press <F2> 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 325.
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 155.
2 Open the blade. See "Opening the Blade" on page 159.
3 Locate the memory module sockets. See Figure 7-13 or Figure 7-12.