Intel Corp. SSDSCKKW010X6X1 540S Series 1.0TB M.2 SSD Storage Capacity: 1.0 TB Solid State Drive. Form Factor: M.2 22 x 80mm. Interface: SATA 3.0 6Gb/S. Sequential Read (up to): 560 MB/s. Sequential Write (up to): 480 MB/s.