Crucial M4 2.5 256GB SATA III MLC Internal Solid State Drive (SSD) CT256M4SSD2BAA 4KB Random Read: Up to 45,000 IOPS Controller: Marvell Sustained Sequential Read: Up to 500MBps (SATA 6Gbs); 265MBps (SATA 3Gbs) Sustained Sequential Write: Up to 260MBps (SATA 6Gbps) 4KB Random Write: Up to 50,000 IOPS Power Consumption (Active): 0.16W Power Consumption (Idle): Max Shock Resistance: 1500G