Dimensions of Appearance 80 x 22 x 3.58 mm (3.15" x 0.87" x 0.14"), double-sided 10 g (0.35 oz) in weight Interface Bus Interface NVMe PCIe Gen3 x4 Storage Type M.2 2280 3D NAND flash type with 256 GB, 512 GB, 1 TB, or 2 TB of capacity Environment of Operation Temperature range for operation: 0°C (32°F) to 70°C (158°F) 3.3V±5% is the operating voltage. Sequential Performance (CrystalDiskMark) Read/Write 3,500/2,900 MB/s to 2 TB 4K Random Read/Write (IOmeter) 1 TB up to 3,500/3,200 MB/s 512 GB up to 3,500/2,500 MB/s 256 GB up to 3,300/1,250 MB/s 2 TB up to IOPs of 340,000/360,000 1 TB to IOPs of 330,000/370,000 Up to 190,000/360,000 IOPS with 512 GB Up to 190,000/300,000 IOPS, 256 GB Written Terabytes (TBW) 4,400 TBW, 2 TB 2,200 TBW 512 1 TB