Samsung pm981 nvme 512gb solid state drive (ssd).based on the product label in your photo, the specific details are:model: mz-vlb512apart number (p/n): mzvlb512hajq-000d1capacity: 512 gbform factor: m.2 2280interface: pcie gen3 x4 nvmekey specificationsflash type: tlc 3d-nandsequential read speed: up to 3,000 - 3,100 mb/ssequential write speed: up to 1,500 - 1,800 mb/sthe pm981 is an oem (original equipment manufacturer) drive, frequently used as the factory-installed storage in high-performance laptops from brands like dell, hp, and lenovo.