The 840757-091 is a high-performance DDR4 memory module designed by HPE (Hewlett Packard Enterprise) specifically for server systems needing reliable and high-speed data processing. With a capacity of 16GB, it features DDR4-2666V technology, running at a speed of 2666 MHz. This module is configured as 4Gx72 ECC Registered/Registered DIMM (RDIMM) with a 2Rx4 layout, providing error-correcting code (ECC) capabilities to ensure data integrity during high-volume transactions and critical computing tasks. The 288-pin interface ensures compatibility with leading-edge server motherboards designed for demanding applications. This module's architecture is particularly suited for environments where stability and reliability are paramount, such as data centers, enterprise computing, and critical systems requiring ECC support.