HP N00855-001 M.2 2280 SSD heatsink is a service spare part for cooling a solid-state drive in supported HP workstations. HP identifies this exact part number as an SSD heat sink in its service documentation.
The part is listed for the HP Z4 G5 and HP Z8 Fury G5 Workstation Desktop PCs. The guides describe M.2 2280 and M.2 2260 drive mounting positions in the installation context, making the heatsink relevant to SSD servicing in these systems.
This is a workstation SSD heatsink, not a storage drive. The cited documentation confirms the part identity and intended workstation context; it does not specify package contents or additional fitment details.