•  Some M.2 backplanes support two identical M.2 drives. Install the M.2 drive in slot 0 first.
Figure 104. M.2 drive slot
1  Slot 0
2  Slot 1
Step 4.  Install the M.2 drive on the M.2 backplane. 
Figure 105. Installing the M.2 drive
a.  Hold the M.2 drive at an angle, and insert it into the M.2 slot.
b. 
Rotate the M.2 drive down until the notch  1  catches on the lip of the retainer  2 .
c. 
Slide the retainer toward the M.2 drive to secure it in place.
After you finish
Complete the parts replacement. See 
“Complete the parts replacement” on page 279.
Demo video
Watch the procedure on YouTube (on air baffle)
Watch the procedure on YouTube (on middle drive cage)
Remove the M.2 backplane
Follow instructions in this section to remove the M.2 backplane.
About this task
Attention: 
146
ThinkSystem SR665 V3 User Guide