OCZ Colossus LT 3.5" 500GB. Solid-state drive capacity: 500 GB, Size: 88.9 mm (3.5 "), Solid-state drive interfaces: Serial ATA II. Read speed: 260 MB/s, Write speed: 260 MB/s. Mean time between failures (MTBF): 1000000 h. Operating temperature range (T-T): 0 - 70 °C, Storage temperature range (T-T): -45 - 85 °C, Operating shock: 1500 G. Depth: 146 mm, Width: 101.6 mm, Height: 25.4 mm