13.  Install the M.2 SSD/dedicated iLO/serial port enablement board:
a.  Insert the enablement board into the M.2 SSD slot at a 45° angle.
b.  Carefully press the enablement board down to the horizontal position.
c.  Install the enablement board screw.
 
14.  Perform the action corresponding to the enablement feature you require:
Install an M.2 NVMe SSD .
Install the serial port cable .
15.  Install the riser cage.
16.  Install the M.2 air guider.