Hitachi Deskstar 7K500 500GB UDMA/133 7200RPM 8MB IDE Hard Drive Hitachi Deskstar 7K500 HDS725050KLAT80 Hard Drive General Features: 500 GB storage capacity UDMA/133 interface (PATA-133) 7200 RPM spindle speed 8 MB buffer 8.5 ms average read seek time 817 Mbits/sec maximum media transfer rate 133 MB/sec interface transfer rate 64.8 - 31 MB/sec (zone 0-29) sustained data rate Smooth Stream Technology improves performance for A/V storage application