Model Number: WD5003AZEX,Capacity: 500GB,Form Factor: 3.5-Inch,Connector: SATA,Interface: SATA,Transfer Rate: Up to 150MB/s,Disk Speed (RPM): 7200 RPM,Recording Technology: CMR,Cache Size: 64MB,Warranty: 5-Year Limited,Dimensions: 5.79 x 4 x 1.03,Weight: 0.95 lbs,Operating Temperature: 5C to 55C,Non-Operating Temperature: -40C to 70C,Certifications: BSMI, ICES-003/NMB-003, CE, FCC, KC, Maghreb, RCM, UKCA, VCCI, CB-Scheme, TUV, UL,Product Features: Designed for gamers, system builders, and professionals, 2X DRAM cache up to 256MiB for faster read speeds on higher capacity models, StableTrac and Dynamic Cache Technology (2TB and up),Compatibility: PC, Mac (requires reformatting),