Seagate LD25.1 40GB SATA/150 5400RPM 2MB 2.5" Hard Drive Seagate ST9402115AS LD25.1 40 GB SATA/150 Notebook Hard Drive General Features: 40 GB storage capacity 5400 RPM spindle speed 2 MB buffer 16 ms average seek time Average latency: 5.6 ms Serial ATA/150 interface 2.5-inch form factor 9.5 mm drive height Power Specifications: +5V - 0.62A Regulatory Approvals: cULus CE C-Tick MIC