The HPE 64GB DDR4-2666 PC4-21300 4Rx4 ECC LR LRDIMM 840759-091 M386A8K40BM2 memory module is a high-quality server RAM designed for enterprise networking and servers. This Samsung module has a speed of 2666MT/s and a storage capacity of 64GB, making it suitable for demanding computing tasks. With error correction code (ECC) memory features, it ensures data integrity and reliability. Its form factor of LRDIMM with 288 pins allows for easy installation and compatibility with various server systems. Ideal for enhancing performance and efficiency in server environments.