WD Scorpio Blue 320GB 2.5" Internal Hard Drive, 5400 RPM, 8MB Buffer, SATA 3Gb/s Interface

The WD 320GB Scorpio Blue 2.5" Internal HDD offers a lot in a little package - high-performance, low power consumption and quiet and cool operation - all in a mobile sized 2.5" frame. The generous 320 GB of storage space (which averages out to 91,000 photos, 24 hours of video, or 80,000 songs, give or take a megabyte), is complimented by the 5400 RPM speed and a hefty 8MB buffer.

A host of other features are part and parcel of this drive - SecurePark, WD's proprietary technology that parks the recording heads off the disk surface during spin up and spin down and when the drive is off, to ensure that the recording head never touches the disk surface. This will increase the life of the disk and minimize fatal disk errors. And there's WhisperQuiet, WD's other proprietary technology that makes the drive quieter and cooler than standard notebook drives.