Micron 32GB PC4-21300 DDR4-2666MHz Registered ECC CL19 288-Pin DIMM 1.2V Dual Rank Memory Module (MTA36ASF4G72PZ-2G6D1QI 840758-091). This is a seller refurbished part in great working condition. May show signs of cosmetic wear but this should not interfere with the effectiveness of the product. Taken from a working environment.