Hard Disk     Notebook Hard Disk   Hitachi notebook hard disk offers leading-edge capacity, performance, durability and power utilization on a proven product platform. This combination of capacity, speed, durability, quiet operation and optimum power efficiency on a proven platform for quality and reliability, delivers desktop-like performance to notebook PCs and other compact, high-end devices.       SKU Number Capacity Interface Access Time RPM Buffer HDHIDK23BA-20 20GB PATA 66 12ms 4200 512K HDIB2NATCS04 20GB PATA 100 12ms 5400 8MB HDIB2NATDA04 20GB PATA 100 12ms 4200 2MB HDHT548020M9AT0 20GB PATA 100 12ms 5400 2MB HDIB2N20ATMR04 20GB PATA 100 12ms 4200 2MB HDHIDK23EA-30 30GB PATA 100 13ms 4200 2MB       SKU Number Capacity Interface Access Time RPM Buffer HDHT541640J9AT0 40GB PATA 100 11ms 5400 8MB HDIB2N40ATMR04 40GB PATA 100 12ms 4200 2MB HDHT424040M9AT0 40GB PATA 100 12ms 4200 2MB HDHT548040M9AT0 40GB PATA 100 12ms 5400 2MB HDHT541040G9AT0 40GB PATA 100 12ms 5400 8MB HDHT548060M9AT0 60GB PATA 100 12ms 5400 8MB HDHT726060M9AT0 60GB PATA 100 12ms 7200 8MB HDHT726060M9ATX 60GB PATA 100 10ms 7200 8MB HDIB2N60ATMR04 60GB PATA 100 12ms 4200 8MB  HDHT721060GASA0 60GB SATA150 12ms 7200 8MB       SKU Number Capacity Interface Access Time