SINGLE BULK PACK WD Caviar Blue WD10EZEX 1 TB SATA 7200RPM 6 Gb/s Internal 3.5-inch Desktop Hard Drive. WD Caviar Blue SATA hard drives deliver solid performance and reliability. The 1 TB capacity provides you with all the space you need to hold an enormous amount of photos videos and files which makes them a perfect solution for family and business computing.