Western Digital Scorpio Blue 320GB SATA/300 5400RPM 8MB 2.5" Hard Drive Western Digital Scorpio Blue 320 GB SATA/300 2.5-inch Hard Drive General Features: 320 GB storage capacity SATA/300 transfer rate Serial ATA interface 5400 RPM spindle speed 8 MB buffer 12 ms average read seek time 5.5 ms average latency 2.5-inch form factor 9.5 mm drive height Power Specifications: +5V, 0.55A Regulatory Approvals: BSMI cULus C-Tick 3-YEAR DIRECT WARRANTY