A Hewlett Packard Enterprise equivalent 16 GB Dual rank- registered ECC DDR4 SDRAM - DIMM 288-pin 2666 MHz (PC4-21300) from Hypertec NOTE: This memory meets the memory specification requirements for reliable operation within a HP Generation 8 (or 9) server- but is not SmartMemory and does not identify as SmartMemory when installed or deliver SmartMemory specific features. from Hypertec