Try this web page from Microsoft.
Good evening, I'm Gerry and I just purchased and received a Dell XPS 9710 Laptop yesterday.  I've been setting it up and, so far, no issues.  It came with Windows 11 Home and that's fine but I would like to upgrade to Win 11 Pro as I do need the domain options but there's no option for that either on the original order page or searching the Dell website.  Everything I run into is about upgrading from Win 10 to Win 11. So, what are my options for this upgrade? I tried emailing Dell tech support about this but got no response.  Best case would be to purchase a Windows 11 code from Dell to authorize the upgrade from Windows 11 Home to Windows 11 Professional.  Thank you in advance for the help. Thank you, Gerry
Windows 11 Upgrade to Pro