40GB IDE Hitachi 9.5mm 4200RPM ATA-5 ATA-100 DK23DA-40F DK23DA40F Hitachi Travelstar DK23DA-20F 20 GB IDE 2.5-inch Hard Drive General Features: 20 GB capacity UDMA/100 4200 RPM spindle speed 2 MB buffer 13 ms average seek time 7.1 ms average latency 2.5-inch form factor 9.5 mm drive height Power Specifcations: +5V, 0.5A Regulatory Approvals: CE C-Tick cULus