HP N77570-001 is a 16 GB DDR5 UDIMM memory module for desktop memory expansion or replacement. Its part number and memory type identify it as a specific HP spare module.
The module is rated DDR5-5600 and uses NECC (non-ECC) memory, for systems configured for this type of desktop memory. HP lists its voltage as 1.1 V. A UDIMM is the desktop DIMM form factor, making this a fit for compatible desktop memory slots.
Use it to add or replace memory in a compatible system that supports this module’s capacity and specifications.