Windows 10: Is the Windows 11 Pro update an OEM or a Retail version?

Good day.I'm looking at the site Actualizar Windows Home a Windows Pro - Soporte técnico de Microsoft and I don't know if the updating process here explained is will update to Windows 11 Pro OEM or Retail.Thanks.

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windows 11 pro oem to retail?

i purchased a prebuilt pc that came with a windows 10 pro oem license eligible for the windows 11 upgrade. i have since upgraded to the windows 11 pro oem version. my question is if i purchase a windows 11 pro retail license, can i change the installed version by changing the license info on the pc using the new retail license?

 

Activate Retail windows 11 pro key on a PC with an OEM license

So this will turn OEM to a RETAIL license?

Both the OEM and the retail are windows 11 pro

 

Activate Windows 10 Pro OEM with retiring Windows 10 Pro Retail product key

My PC is running a valid install of Windows 10 Pro retail but the system HDD is failing.

I have acquired a SSD with Windows 10 Pro OEM installed. I would like to retire the HDD containing the retail licence and substitute it with the SSD containing the OEM licence. I do not wish to reinstall the retail version on the SSD as that would delete all the apps thereon.

Can I activate the OEM version with the (retired) retail version's product key? The oem version was not originally installed on this pc and hence the motherboard is not the same as per the original oem install.

It does not matter that in substituting the SSD for the HDD I lose all the apps installed on the HDD.

The pc is not eligible for the Win 11 upgrade.