320GB HARD DRIVE for Acer Netbooks Aspire One AO521 AO522 AO531H AO721 AO722 2.5″ Notebook

The item may be missing the original packaging, or in the original packaging but not sealed. Enhanced Adaptive Battery Life Extender 3.0 for maximized battery life
Low Power: Spins at 5400 RPM for fast performance but has power specifications similar to slower 4200 RPM drives Fluid Dynamic Bearing Spindle Motor for lower acoustics and increased non-operating shock tolerance
Ultra Quiet: Advanced noise reduction using a Voice Coil Motor (VCM) Damper S. M. A. R. T. compliant detection system that gives advanced warning of possible drive inconsistencies Stiffness-reinforced base casting construction offers enhanced stability and greater vibration/shock resistance Antiferromagnetically-coupled (AFC) “pixie dust” media Specular Layer giant magnetoresistive (GMR) heads Ramp Head Load/Unload technology Partial Response Maximum Likelihood (PRML) read channel Adaptive Formatting Capacity (GB) 320 Form Factor 2.5″ Notebook Rotational Speed (rpm) 5400 Seek time (ms) 12 Average (typical) Buffer Size 8 MB Drive Type SATA Product Life 5 Years Buffer to/from Host Max 1.5G b/s or 3.0G b/s Dimensions (mm) 9.5 (H) x70 (W) x100 (D) Features Fourth-generation Fluid Dynamic Bearing (FDB) motors dramatically reduce acoustic noise 320GB Hard Drive for Acer Laptop Netbooks Aspire One AO521 Netbooks Aspire One AO522 Netbooks Aspire One AO531h Netbooks Aspire One AO532h Netbooks Aspire One AO721 Netbooks Aspire One AO722 Netbooks Aspire One AO751h