Lenovo ThinkStation P520 Hardware Maintenance Manual page 157

4. To remove the M.2 solid-state drive, pull the handle of the retention latch outward to release the M.2
solid-state drive. Then, remove the M.2 solid-state drive from the PCIe adapter.
Figure 97. Removing the M.2 solid-state drive
5. To install an M.2 solid-state drive, do the following:
a. If necessary, move the retention latch to an appropriate location to suit the length of the new M.2
solid-state drive.
Figure 98. Adjusting the location of the retention latch on the PCIe adapter
b. If necessary, remove the film on the thermal pad on which you want to install the M.2 solid-state
drive.
.
Chapter 9 Hardware removal and installation
149