Hard Disk       Product Picture         Product Information   SKU # HDHIDK23BA-20     Manufacturer Hitachi     Features  - Rugged construction delivers high shock tolerance for lasting performance  - Low track-to-track seek times, ATA-66 interface, 512KB buffer, and 4,200 RPM spindle speed deliver outstanding performance     Specifications    - Capacity 20GB  - Interface Ultra ATA 66  - Data Transfer up to 66 MB/s  - Access Time 12ms  - RPM 4200  - Buffer 512KB  - Dimensions 0.37” x 2.75” x 3.94” ( H x W x D)