Western Digital Travelstar 40GN internal hard drive 20 GB 4200 RPM 2 MB 2.5"

Advances notebook hard drive leadership with the highest capacity, highest performing drives. Offers new models that operate with the Enhanced Availability feature. 40GN provides areal densities of up to 34Gbits/sq.inch, yielding up to 20GB of capacity per disk. All models contain Fluid Dynamic Bearing (FDB) motor technology for industry-leading idle and operating acoustic performance. Travelstar provides industry-leading operational shock rating of up to 200Gs (2ms).