Form Factor: CFexpressTM Type B Interface: PCIe Gen3x2 Performance 1TB - Up to 1750MB/S read, up to 1300MB/s write, minimum sustained write speed 1200MB/s 512GB - Up to 1750MB/S read, up to 1300MB/s write, minimum sustained write speed 850MB/s 256GB - Up to 1750MB/s read, up to 1300MB/s write, minimum sustained write speed 480MB/s 128GB - Up to 1750MB/s read, up to 1300MB/s write, minimum sustained write speed 480MB/s Operating Temperature: -10°C to 70°C (14°F to 158°F) Storage Temperature: -25°C to 85°C (-13 °F to 185 °F) Dimension(L x W x H): 29.60 x 38.50 x 3.80 mm / 1.16' x 1.51' x 0.14' Weight: 7.65 g / 0.016 lbs