OCZ Technology Colossus Series 3.5-Inch SATA Solid State Drive OCZSSD2-1CLS500G Maximum Read Speed: 260 Sustained Write Speed: 220/Maximum Write Speed: 260 128MB Cache/3.5-Inch Aluminum Casing Operating Temperature: 0-70C/Shock Resistance: 1500G MTBF: 1.5 Million Hours/Certifications: RoHS; UL; FCC; CE