Based on this product's specifications, here are some alternatives and similar models
Server RAM HPE 64GB (1x64GB) Dual Rank x4 DDR4-3200 Registered CAS22 288‑pin DIMM ECC
Summary description:
HPE 64GB (1x64GB) Dual Rank x4 DDR4-3200 Registered Smart Memory Kit — 64 GB ECC server/PC module in a single 288‑pin DIMM. Operates at 3200 MHz with CAS latency 22 and registered (buffered) design for improved stability in servers and workstations. Suitable for memory upgrades in compatible HPE systems and enterprise-grade servers requiring ECC and dual‑rank modules.