Windows 10 Pro - Retail licence - 100% Genuine licence, can be used to fresh Windows 10 install (even for Parallels), and also to upgrade from Windows 10 Home to Windows 10 Pro - Was purchased to be used on refurbished computers, these are the 'leftovers', I'd like to sell them to someone who might need them - After successful activation, you can link the licence to your Microsoft account, so you will be able to reactivate Windows even after a major hardware change. - With properly activated Windows, you don't need to worry about missing drivers or updates - Windows Update will take care of everything. This is an ESD licence - after purchase, you'll receive a link with the Product Key. *If your PC is eligible, after all updates are installed, the system will eventually offer to upgrade to Windows 11 for free. To check the system requirements, visit https://www.microsoft.com/en-us/windows/windows-11-specifications.