Lenovo ThinkSystem SR850, Maintenance Manual

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3. Power on the server and any peripheral devices.
M.2 drive and backplane replacement
Use this procedure to remove or install M.2 drives and backplane.
How to 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 steps:
1. Read the safety information and installation guidelines (see “Safety” on page iii and “Installation
Guidelines” on page 51).
2. Touch the static-protective package that contains the component to any unpainted metal surface on the
server; then, remove it from the package and place it on a static-protective surface.
To adjust the position of the retainer on the M.2 backplane, complete the following steps:
Step 1. Locate the correct keyhole that the retainer should be installed into 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.
Step 3. Insert the retainer into the correct keyhole and slide it backwards until the nubs are in the holes.
Figure 65. M.2 retainer adjustment
Remove the M.2 backplane
Use this procedure to remove the M.2 backplane.
Before removing the M.2 backplane:
1. Read the safety information and installation guidelines (see “Safety” on page iii and “Installation
Guidelines” on page 51).
2. Turn off the server and peripheral devices and disconnect the power cords and all external cables (see
“Power off the server” on page 8).
3. If the server is installed in a rack, slide the server out on its rack slide rails to gain access to the top
cover, or remove the server from the rack.
4. Remove the top cover (see “Remove the top cover” on page 130).
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ThinkSystem SR850 Maintenance Manual