HP P32321-001 is a 48 GB memory module for expanding system memory in the HP Z2 Mini G1i Workstation. The service guide identifies this exact part number as the 48 GB option in the workstation’s memory parts list.
It uses DDR5-6400 NECC memory in a SODIMM format. The module has an industry-standard 260-pin specification, matching the memory format documented in the guide for this workstation. It is a practical way to add memory capacity for supported system configurations.