This is Windows 11 different versions on 8GB USB Drive. This USB drive DOES NOT includeMicrosoft windows Activation Key. You can upgrade your PC to OS 11 if you have previousOS and use your old key. However, not all PC can meet the minimum requirement forWindows 11 .Please check Microsoft to see if your PC is eligible or not. 
You can check this instruction Link below :


https://support.microsoft.com/en-us/windows/how-to-check-if-your-device-meets-windows-11-system-requirements-after-changing-device-hardware-f3bc0aeb-6884-41a1-ab57-88258df6812b
Or you can
see the Window requirement here : https://www.microsoft.com/en-us/windows/windows-11-specifications


Please check the above instructions before you buy this Item.