How to Upgrade M.2 Pcie Nvme SSD HDD RAM Lenovo ThinkCentre M920s Disassembly 

You got to turn the two orange plastic screws 90 degrees away from the ssd to take off the passive cooling unit. Then you have to pull the black plastic lash up and away from the ssd. I struggled with the last stepso i took a screwdriver and accidentally ripped the lash off of the underlying plastic pin but it worked as in that i was able to stick it back in after changing the ssd.

Maybe you can buy a PCIe SSD Adapter card set with a not too thin heat sink so you dont have to touch that original slot at all.

If the system did not ship with an M.2 drive from the factory, you will need the M.2 storage bracket. Refer to Lenovo option number 4XF0P01011 for ordering. I picked one up for 14.99 and added a Patriot M.2 PCIe Gen3 x4 SSD. Good luck!

Hi, did you figure out where to find the adapter? mine doesn't come with the adapter neither.

You can buy a PCIe SSD Adapter card set if your mainboard has a free PCIe slot. It is usually under the graphics card. Also if you have USB 3.0 you can use an adapter case for M.2 SSDs and put it on the outside of the computercase with double sided tape.

You got to turn the two orange plastic screws 90 degrees away from the ssd to take off the passive cooling unit. Then you have to pull the black plastic lash up and away from the ssd. I struggled with the last stepso i took a screwdriver and accidentally ripped the lash off of the underlying plastic pin but it worked as in that i was able to stick it back in after changing the ssd.