Figure 103. LOM adapter installation
Step 1.  Place the LOM adapter into the connector on an angle.
Step 2.  Rotate the LOM adapter down.
Step 3.  Push the LOM adapter as shown to insert it into the connector on the system board.
Step 4.  Tighten the thumbscrew to secure the LOM adapter.
Complete the parts replacement. See “Complete the parts replacement” on page 164.
M.2 backplane and M.2 drive replacement
Use this information to remove and install the M.2 backplane and M.2 drive (an assembled M.2 backplane 
and M.2 drive is also known as M.2 module).
Remove the M.2 backplane and M.2 drive
Use this information to remove the M.2 backplane and M.2 drive.
“Read the  
installation 
Guidelines” on 
page 53
“Power off  
the server  
for this task” 
on page 13
“ATTENTION:  
Static Sensitive Device  
Ground package before opening” 
on page 56
Before removing the M.2 backplane and M.2 drive: 
1.  Remove the top cover. See “Remove the top cover” on page 56.
2.  For easier operation, remove the riser assembly next to the M.2 backplane. See “Remove a riser card” 
on page 104.
3.  For server models with twelve 3.5-inch hot-swap drives, if you are removing the 480 GB M.2 drive, 
remove the M.2 drive air baffle.
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ThinkSystem SR550 Maintenance Manual