Samsung SpinPoint M5S 120GB SATA/150 5400RPM 8MB 2.5" Hard Drive Samsung SpinPoint M5S 120 GB SATA/150 2.5-inch Hard Drive General Features: 120 GB formatted capacity Serial ATA/150 interface 1.5 Gb/s data transfer rate 5400 RPM spindle speed 8 MB buffer 5.6 ms average latency SATA native command queuing SilentSeek Noise Guard TuMR/PMR head with wireless suspension design Fluid dynamic bearing spindle motor technology