HP ProLiant DL20 Gen10 Plus Maintenance And Service Manual page 92

11. Disconnect all cables from the drive backplane .
12. Remove all drives .
13. Remove the 2 LFF drive cage assembly:
a. Remove all screws (callouts 1 and 2).
Retain all screws for future use.
b. Remove the drive cage assembly from the front panel (callout 3).
14. Remove the 2 LFF drive backplane.
Retain the screw for future use.
Removing and replacing the 2 LFF drive backplane 92