Lenovo ThinkSystem SR645 Maintenance Manual page 192

Step 4. Install the M.2 adapter onto the chassis.
Figure 81. M.2 adapter installation
a. Align the notch of the M.2 adapter with the pin on the chassis, and then place down the M.2
adapter.
b. Tighten the screw to secure the M.2 adapter.
Step 5. Install the M.2 drive on the M.2 adapter.
Figure 82. M.2 drive installation
a. Insert the M.2 drive at an angle of approximately 30 degrees into the connector.
b. Rotate the M.2 drive down until the notch
c. Slide the retainer forward (toward the connector) to secure the M.2 drive into place.
Step 6. Connect the M.2 cables to the system board. You can refer to the Internal cable routing and locate
the cable routing information for your configuration options.
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catches on the lip of the retainer
1
.
2