Step 4.  Align the blue plastic supports at each end of the M.2 backplane with the guide pins on the system 
board. Then, insert the M.2 backplane into the M.2 slot on the system board and press it down to 
fully seat it. 
Figure 91. M.2 backplane installation
After installing the M.2 drive and M.2 backplane: 
Chapter 3. Server hardware setup 163