Hitachi 0A52124 160GB Hard Drive Hitachi Travelstar 5K250 HTS542516K9SA00 Hard Drive General Features: 160 GB storage capacity Serial ATA/150 interface 8 MB data buffer 5400 RPM rotational speed 5.5 ms average latency 665 Mbits/sec maximum media transfer rate 150 MB/sec maximum interface transfer rate 11 ms average read seek time 1 ms average read track to track time 20 ms full stroke seek time TrueTrack Technology for tracking accuracy in high shock or vibration environments