HPE ProLiant DL325 Gen10 Plus v2 User Manual page 171

Primary riser slot 2
d. Install the primary riser cage.
13. To install the boot device in the secondary riser, do the following:
If you are installing the boot device 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 boot device.
Make sure that the device is seated firmly in the slot.
Boot device with low-profile bracket
Boot device with full-height bracket
Installing the HPE NS204i-p NVMe OS Boot Device option 171