Add-On Computer AddOn 64GB DDR4 SDRAM Memory Module - For Server, Computer - 64 GB (1 x 64GB) - DDR4-2933/PC4-23400 DDR4 SDRAM - 2933 MHz - CL17 - 1.20 V - ECC - Registered - 288-pin - DIMM - Lifetime Warranty

AddOn 64GB DDR4 SDRAM Memory Module - For Server, Computer - 64 GB (1 x 64GB) - DDR4-2933/PC4-23400 DDR4 SDRAM - 2933 MHz - CL17 - 1.20 V - ECC - Registered - 288-pin - DIMM - Lifetime Warranty

This HP® P00930-B21 Compatible 64GB DDR4-2933MHz dual rank registered ECC 1.2V 288-pin CL17 RDIMM is 100% guaranteed to be compatible with your system and to work right the first time. All of our server memory is built to strict JEDEC standards at one of the tier 1 facilities (Samsung®, Micron®, or Hynix®). Our products are also guaranteed by federal law to not affect or void OEM warranties.