WD Desktop mainstream hard drives are designed and manufactured with WD's award-winning technology. They provide solid reliability for everyday office and web applications. They're perfect for extra storage for desktop PCs. We perform tests on hundreds of systems and a multitude of platforms in our FIT Lab so you can rest assured our drives will work in their system. The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit. WD puts our products through extensive Functional Integrity Testing (F.I.T) prior to any product launch. This testing ensures our products consistently meet the highest quality and reliability standards of the WD brand. Our customer support lines have longer operational hours to ensure you get the help you need when you need it. Our toll-free customer support lines are here to help or you can access our WD Support site for additional details. Seamlessly migrate your current system to your new WD Desktop Mainstream drive using Acronis True Image WD Edition software, available as a free download on the WD Support site. This software enables you to copy all your data to a new drive so you don't have to reinstall your operating system to get all the benefits of a new drive. The 2 TB and 3 TB models are designed for energy efficiency. Using state-of-the-art seeking algorithms and advanced power management features ensure low power consumption in these high-capacity models. WD Desktop Mainstream drives are backed by a 2-year limited warranty for added peace of mind. It's easy to install an internal hard drive in your computer. WD Desktop mainstream hard drives are ideal for office and web applications, as extra storage for your PC, upgrading your PC and for backing up your important files.