Seagate Barracuda 500GB 5400 RPM Computing Laptop Internal Hard Disk Drive ( ST500LM030 )

128MB buffer.
5400-RPM spindle speed.
Full-track multiple-sector transfer capability without local processor intervention.
High instantaneous (burst) data-transfer rates (up to 6Gb/s).
MTC Technology, proprietary data flow management
Native Command Queuing (NCQ) with command ordering.
Perpendicular recording technology.
Quiet operation. Fluid Dynamic Bearing (FDB) motor.
SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
State-of-the-art cache and on-the-fly error-correction algorithms.
Support for Read Multiple and Write Multiple commands.
Support for S.M.A.R.T. drive monitoring and reporting.
Worldwide Name (WWN) capability uniquely identifies the drive