Windows is already installed in this hard drive, it’s great for assembling new computers or upgrading a failing drive in an existing one. This drive is suitable for any machine, that has a SATA connection. It has been tested using a variety of diagnostic tools to make sure it is in flawless operating condition. SETUP - Install the disk in the Desktop, turn it on, and it will automatically download the latest drivers for your hardware. If Windows 7/10 Pro was already pre-installed on your machine. Windows will automatically identify and activate the hardware-embedded digital license on your system. The brand and model of the Hard drive may change based on available supply, but they will come from a Major brand (Seagate, Samsung, Western Digital, Toshiba, etc.). DRIVES WORK ONLY IN LEGACY MODE! Unless specified otherwise

In newer models you may need to access the BIOS and switch Secure Boot to Legacy/CSM Boot . Kindly take note that the hard drives have been configured with Windows Professional Edition and are not compatible with the home version. Please contact us with any issue before leaving negative feedback or opening a dispute or return case. we will respond with a solution promptly PLEASE NOTE: WINDOWS IS PRE-INSTALLED. HARD DRIVE DOES NOT SHIP WITH PRODUCT KEY FOR WINDOWS