Seagate Momentus 5400.4 250GB SATA/300 5400RPM 8MB 2.5" Hard Drive Seagate Momentus 5400.4 250 GB Serial ATA 2.5-inch Hard Drive General Features: 250 GB storage capacity SATA/300 5400 RPM spindle speed 8 MB buffer 5.6 ms average latency 12 ms random read seek time 14 ms random write seek time 9.5 mm drive height 2.5-inch form factor Power Specifications: +5V, 0.508A Regulatory Approvals: cULus CE C-Tick BSMI TUV MIC