HPE ProLiant DL385 Gen10 Plus v2 Maintenance And Service Manual page 84

9. Remove the drive backplane.
To replace the component, reverse the removal procedure.
DIMM-processor compatibility DIMM-processor compatibility
The installed processor determines the type of DIMM that is supported in the server:
AMD EPYC processors support DDR4-3200 DIMMS.
Mixing DIMM types is not supported. Install only the supported DDR4-3200 DIMMs in the server.
Removing and replacing a DIMM Removing and replacing a DIMM
HPE ProLiant DL385 Gen10 Plus v2 Server Maintenance and Service Guide 84