HP hpe proliant dl20 gen9 User Manual page 44

If installed, remove the air scoop from the controller.
a.
If you are planning to install the FBWC, install it now
b.
module options" on page 46).
Install the Smart Array controller in slot 2.
c.
Connect the Mini-SAS cable to the Smart Array controller.
10.
("Installing the storage controller and FBWC
Hardware options installation 44