Lenovo ThinkSystem SN850 Setup Manual page 53

Figure 21. M.2 drive installation
After you install the M.2 drive into the M.2 backplane, complete the following steps:
1. Install the M.2 backplane (see
Adjust the position of the retainer on the M.2 backplane
Use this information to adjust the position of the retainer on the M.2 backplane.
Before you adjust the position of the retainer on the M.2 backplane, complete the following step:
Read to ensure that you work safely.
To adjust the position of the retainer on the M.2 backplane, complete the following steps:
Figure 22. M.2 retainer adjustment
Step 1. Locate the correct keyhole that the retainer should be installed to accommodate the particular size
of the M.2 drive you wish to install.
Step 2. Press both sides of the retainer and move it forward until it is in the large opening of the keyhole;
then, remove it from the backplane.
"Install the M.2 backplane" on page 46).
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Chapter 3 Compute node hardware setup
45