HPE ProLiant DL325 Gen11 User Manual page 173

9. Remove the OCP slot blank:
a. Remove the blank screw.
b. Remove the blank.
Retain the screw and blank for future use.
10. Install the OCP NIC 3.0 adapter:
a. Rotate the locking pin to the open (vertical) position.
b. Slide the adapter into the bay until it clicks into place.
Make sure that the adapter is seated firmly in the slot.
c. Rotate the locking pin to the close (horizontal) position.
HPE ProLiant DL325 Gen11 Server User Guide 173