8GB DDR4 PC4-21300 1rx8 1.2v ECC Registered SERVER Memory Module (288-pin DIMM 2666MHz) WARNING! This module is ECC REGISTERED! All modules in your system MUST be the same ECC Type in order to properly function. Genuine A-Tech Brand Lifetime Warranty! Toll Free Technical Support Designed for maximum compatibility and easy installation in to your Dell Precision 5810 (Please verify the capabilities of your CPU) Equivalent to the following Dell Genuine part number(s): A9781927 - SNP1VRGYC/8G