Toshiba MK4021GAS 40GB Hard Drive Toshiba MK4021GAS 40 GB Notebook Hard Drive General Features: 40 GB formatted capacity UDMA/100 4200 RPM spindle speed 12 ms average seek time 7.14 ms average latency 2 MB buffer 2.5-inch form factor 9.5 mm drive height Power Requirements: DC +5V, 0.7A Regulatory Approvals: UL CSA CE C-Tick BSMI