[OLD MODEL] Crucial m4 256GB 2.5-Inch (9.5mm) SATA 6Gb/s Solid State Drive CT256M4SSD2 Solid state disk, SATA III 6 Gb/sec Backward compatible with SATA II, 3 Gb/sec 500 MB/sec sequential reads (at 6 Gb/sec),260 MB/sec sequential writes (at 6 Gb/sec) 3 Year parts and labor warranty