The HPE 835955-H21 memory module is a 16 GB DDR4 RAM component for enterprise servers, operating at a speed of 2666 MHz with ECC error correction to enhance data integrity and system stability. It is compatible with HPE ProLiant Gen9, Gen10, and Gen10 Plus servers, as well as Apollo, Synergy, and Blade systems, ensuring reliable performance in demanding environments such as virtualization, cloud computing, and large database applications. This module undergoes rigorous testing and qualification by HPE to optimize compatibility and enable advanced memory features, supporting high-capacity workloads with improved efficiency. With a focus on durability and consistent operation, it helps meet growing data center demands without compromising reliability. The single 16 GB configuration allows for flexible memory expansions and is ideal for businesses seeking reliable server upgrades.