Travelstar 4K40 Hard Drive - 40 Gb - Internal - 2.5 - ATA-100-44 Pin Idc - 420 Hitachi Travelstar 4K40 40 GB 2.5-inch Notebook Hard Drive General Features: Capacity: 40 GB UDMA/100 4200 RPM spindle speed 2 MB buffer 12 ms average seek time 7.1 ms average latency 2.5-inch form factor 9.5 mm drive height Power Specifications: +5V, 1.0A Regulatory Approvals: CE MIC C-Tick cULus TUV