Mixed Brand 3.5" SATA Hard Drive with Windows Preinstalled Compatible with 99% of PC Desktops Windows 10 or Windows 11 Pre-installed Plug and play. When you connect the drive, it is already completely configured with a fresh install of Windows, so you can start using it right away. This is excellent for building new computers or upgrading a failing drive in an existing one. The drives have been thoroughly examined and tested using a variety of diagnostic tools to make sure they are in flawless operating condition. BrandThe brand you receive will vary depending on which drive you choose. We use a variety of well known brands including Seagate and Western Digital. Each drive has been thoroughly tested, wiped clean, and reinstalled with Windows. Windows ActivationThe SSD comes with a freshly installed, genuine copy of Windows 10 or 11. An activation key is not included, but if your computer has already been activated, Windows will automatically identify and activate the hardware-embedded digital license on your system. Compatibility This drive is compatible with almost any Desktop that uses a 3.5” SATA drive and supports Windows 10 or 11 64-bit. Please note: If you intend to use Windows 11, please ensure that your computer meets the system requirements. Windows 11 has specific hardware requirements that must be met. Shipping & Support We offer fast, free shipping on all orders, with free returns up to 30 days. If you have any questions or concerns, please do not hesitate to contact us.