SanDisk Ultra II 960GB Solid State Drive (SDSSDHII-960G-G25) Storage Capacity: 960GB Solid State Drive. Form Factor: 2.5 inch SATA SSD. Interface: SATA Revision 3.0 (6 Gb/S). Seq. Read (up to): 550 MB/s. Seq. Write (Up to): 500 MB/s.