This HP 805351-B21 compatible 32GB DDR4-2400MHz dual rank registered ECC 1.2V 288-pin CL17 factory original 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.

• DIMM 32 GB of memory to maintain symmetry with processor and hard drive and bring out the ultimate computing experience
• 288-pin-pin DDR4-2400/PC4-19200 interface multiplexes 2-bit data from memory cell and I/O buses to minimize processor idle time and enhance your computer's performance
• No matter how heavy and numerous the applications that you are using, 2400 MHz memory speed with Registered signal and CL17 latency will run them smoothly