HPE ProLiant DL325 Gen10 Plus v2 User Manual page 165

15. To install the add-in card in the secondary riser, do the following:
If you are installing the add-in card with the full-height bracket in the secondary riser, make sure that the riser is equipped with the
full-height retainer bracket.
a. Remove the riser slot blank.
b. Install the add-in card.
Make sure that the card is seated firmly in the slot.
Add-in card with low-profile bracket
Add-in card with full-height bracket
Installing the M.2 SATA SSD enablement option 165