HP M08195-001 is a 32 GB UDIMM memory module for desktop computers. It uses DDR4-3200 memory and is specified as NECC, meaning non-ECC. HP lists this exact part number as a memory spare for the Pro Tower 400 G9 PCI and Pro Tower 480 G9 PCI.
The module is intended for installation in a DIMM socket on a system board. In the HP computers covered by the guide, additional memory is recognized automatically when the computer starts. This can expand the installed memory for supported configurations.
HP’s guide describes configurations with up to 64 GB of memory in dual-channel mode. That capacity and mode refer to the computers described in the guide; the entry does not establish support for every desktop system.