2.5" brand hard disk for laptop,USB2.0

Original Western Digitalhard disk2.5 Inch 500 GB for Laptops Transfer Rate: 3000Mbps Capacity: 500GB Or Above Interface SATA 3GB/S Formatted capability 500, 107MB User sectors per drive 976, 773, 168 Master/ slave support Yes Form factor 2.5 inch ROSH compliant Yes Data tranfer rate(max) Buffer to host Host to/from drive(sustained) 3GB/s 108MB/S Cache(MB) 8 Average latency(ms) 5.5 Rotational speed(RPM) 5400 Average drive ready time(sec) 4 Reliablity/Data Intergrity Load// unload cycles 600, 000 Non-recoverable reaad errors per bits read <1 inch 1014 Limited warranty(years) 3 Power Management 5VDC± 10%(A, peak) 0.95 Average Power requirements(W) Read/ White Idle Standby/Sleep 1.6 0.65 0.20 Environmental Specifications Temperature (0C) Operating Non-operating 0 to 60 -40 to 65 Shock( GS) Operating(2ms, read) Non-operating 350 1000 (2 ms) Acountics(dBA) Idle Seek(Average) 22 25 Physical Dimesions Height(in/mm. Max) Length (in/mm. Max) Width (in/ mm± 0.1/in) Weigh (Ib/Kg, ± 10%)