Crucial 128GB M225 2.5" Solid-State Drive. Solid-state drive capacity: 128 GB, Size: 63.5 mm (2.5 "), Solid-state drive interfaces: Serial ATA. Read speed: 250 MB/s, Write speed: 190 MB/s, Data transfer rate: 3 Gbit/s. Depth: 69.85 mm, Width: 100.2 mm, Height: 9.5 mm