Hewlett Packard Enterprise 728629-B21 Memory Module

The Hewlett Packard Enterprise 728629-B21 memory module is a 32GB DDR4 Registered DIMM (RDIMM) designed to expand memory capacity in enterprise servers, delivering ECC-protected reliability for demanding workloads in HPE ProLiant Gen9 systems. This 288-pin, 2Rx4 RDIMM operates at DDR4-2133 (PC4-2133P) with a 1.2V supply and is identified by MPN 728629-B21, Spare 774175-001, and Assembly 752370-091, with factory-sealed packaging and JEDEC/HPE certification. Commonly installed in rack servers, blade servers, storage systems, and data center infrastructure, it supports virtualization hosts and database servers where stable memory performance and data integrity are essential.