This Western Digital 320 GB hard drive is ultra-fast, well-designed, and a good choice for busy people who want an easy to add more data storage. This Western Digital 320 GB hard drive is the perfect solution for adding more storage capacity to your system. Do-it-yourselfers and technophiles alike are delighted by the performance and quality of the Western Digital Caviar Blue. With solid construction, this internal 3.5-inch hard drive is very dependable, allowing you to benefit from sustained flawless performance without worry of data errors or disk crashes. You can keep your entire family's favorite uploaded digital photos, high-definition videos, and backup files without a problem because the Western Digital Caviar Blue features very big storage space. This Western Digital 320 GB hard drive is a breeze to install, allowing you to quickly make use of it in systems supporting the SATA II standard. In addition, the ultra-fast 7200 RPM rotation speed featured on the Western Digital Caviar Blue helps you to backup large data files, applications, and photos in rapid fashion. Because this internal 3.5-inch hard drive features a 16 MB buffer size, you can achieve even better access times when you're transferring data, backup up your system, or analyzing information.