Capacity 256GB Form Factor 2.5″ NAND Flash 3D NAND Dimensions (L x W x H) 100.45 x 69.85 x 7mm / 3.95 x 2.75 x 0.27inch Weight 47.5g / 1.68oz Interface SATA 6Gb/s Sequential Read (Max*) Up to 550MB/s Sequential Write (Max*) Up to 520MB/s