WD6400AACS-00M3B0 Western Digital Caviar Green 640GB 5400RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive

Experience dependable, low‑noise performance with Western Digital’s Caviar Green hard drive, designed to keep your digital life running smoothly. Engineered for energy efficiency, this drive quietly stores your photos, music, documents and favorite media, delivering the reliability you expect from a trusted brand. Its smart power management helps reduce electricity costs while maintaining consistent data access, making it an ideal choice for home PCs, office workstations, and secondary storage solutions. Enjoy peace of mind knowing your valuable files are protected by proven technology that balances capacity and quiet operation for everyday computing needs.