Samsung 1TB 850 PRO. Solid-state drive capacity: 1000 GB, Solid-state drive interface: Serial ATA III, Read speed: 550 MB/s. SSD form factor: 2.5". Power consumption (read): 3.3 W, Power consumption (idle): 0.4 W. Width: 3.94" (100 mm), Depth: 0.268" (6.8 mm), Height: 2.75" (69.8 mm). Operating temperature (T-T): 32 - 158 °F