Base Specification:
Caviar Blue 320GB 7200RPM SATA 3Gb/s 8MB Cache 3.5-Inch Hard Drive
WD3200AAJS-40VWA1 WESTERN DIGITAL CAVIAR BLUE 320GB 7200RPM SATA-300 3.5INCH INTERNAL HARD DRIVECaviar Blue 320GB 7200RPM SATA 3Gb/s 8MB Cache 3.5-Inch Hard Drive
WD3200AAJS-40VWA1 WESTERN DIGITAL CAVIAR BLUE 320GB 7200RPM SATA-300 3.5INCH INTERNAL HARD DRIVE