Lenovo ThinkSystem SR550 Maintenance Manual page 143

Figure 104. M.2 drive air baffle removal
To remove the M.2 backplane and M.2 drive, complete the following steps:
Watch the procedure
A video of this procedure is available at
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Step 1. Grasp the M.2 backplane at both ends and pull it straight up to remove it from the system board.
Figure 105. M.2 backplane removal
Step 2. Remove the M.2 drive from the M.2 backplane.
https://www.youtube.com/playlist?list=PLYV5R7hVcs-
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Chapter 3 Hardware replacement procedures
135