Western Digital WD5000AAKS 500GB 3.5" SATA 16MB 7200RPM Caviar Blue Internal Hard Drive. SATA 3.0 Gb/s Interface The next-generation SATA interface supports up to 3.0 Gb/s data transfer rates, Native Command Queuing (NCQ) and hot-pluggable point-to-point connections to allow the WD Caviar SE16 WD5000AAKS to deliver optimum performance, efficiency, convenience and flexibility. WD WhisperDrive and SoftSeek Technology WhisperDrive technology minimizes noise to virtually below the threshold of human hearing. To cut seek noise, SoftSeek technology streamlines read/write seeking algorithms resulting in more efficient operation. WD Data Lifeguard Technology Exclusive Data Lifeguard data protection features include shock protection, an environmental protection system and real-time embedded error detection and repair. WD's Data Lifeguard technology automatically finds isolates and repairs problems that may develop over the life of a hard drive. D ShockGuard Technology ShockGuard technology instantaneously protects the hard drive against damage from bumps and vibrations during operation. This technology enables WD Caviar drives to achieve industry-leading shock specifications.