HPE ProLiant DL385 Gen10 Plus v2 Maintenance And Service Manual page 50

To replace the component, reverse the removal procedure.
Removing and replacing a drive blank Removing and replacing a drive blank
CAUTION: To prevent improper cooling and thermal damage, do not operate the server unless all bays are populated CAUTION:
with either a component or a blank.
Procedure Procedure
1. If installed, remove the front bezel .
2. Remove the drive blank.
LFF drive blank
SFF drive blank
To replace the component, reverse the removal procedure.
HPE ProLiant DL385 Gen10 Plus v2 Server Maintenance and Service Guide 50