This is a Samsung 990 Evo Plus 4TB NVME M.2 2280 SSD. This is brand new and sealed. This is a very high performance PCIE 4.0 x4/5.0 x2 NVME SSD that can deliver up to 7,250 MB/s sequential read speeds.

Noteworthy Specs include:

• M.2 2280 Form Factor
• PCIE 4.0 x4/5.0 x2 Interface
• Up to 7,250 MB/s sequential read
• Up to 6,300 MB/s sequential write
• Up to 1,050,000 read IOPS
• Up to 1,400,000 write IOPS
• 2,400 TBW endurance

Additional information including full specifications can be found at the manufacturer's data sheet at https://download.semiconductor.samsung.com/resources/data-sheet/samsung_nvme_ssd_990_evo_plus_datasheet_rev.1.0.pdf