Samsung 500 GB 5400 RPM SATA Hard Drive Samsung EcoGreen 500GB SATA/300 5400RPM 16MB Hard Drive General Features: 500 GB capacity SATA/300 interface 300MB/s transfer rate 16 MB buffer Lead-free 3.5-Inch form factor dual-ARM based firmware FOD control Rotational vibration sensor ATA S.M.A.R.T. compliant Power Specifications: 12V~0.5A 5V~0.7A Regulatory Approvals: cULus CE BSMI RoHS VCCI