The following example teaches you how to determine if the permission of Windows you are running on your computer is an OEM, Retail, or Volume type.
When you are going to buy a license of Windows, there are a number of different ways to do it. Depending on how you choose the licenses and other price, they also have different rights, constraints and names. The most common types of licenses are Retail (FPP (Full Packaged Product)), OEM (Original Equipment Manufacturer), and Volume Licensing.
For more information, see this one Microsoft link
Volume Licensing
They appeal to companies of all sizes who wish to obtain at least 5 software licenses by choosing one of the flexible pricing schemes, simplifying license management and enjoying additional product-related benefits (eg license transferability, downgrade rights, and the use of older versions etc.).
Pre-installed software (OEM / DSP)
Pre-installed software is available in DSP / OEM format and is designed to (a) pre-install on new PCs and servers exclusively from computer / server manufacturers for resale, or (b) accompany the computer or server originally installed by its manufacturer (System Builder or OEM Manufacturer)
Retail Packages (Retail / FPP)
Retail packages / FPP (Full Packaged Products) are available through retail outlets and are aimed at both domestic users as well as in very small companies up to 10 PCs. They allow installation and use of the software on 1 device. The package includes the key number for its activation product and storage medium or link to online location for installation.
But let's now look at how to understand if your Windows is turned on as Retail, OEM, or Volume.
1. Open a command prompt. To do this, press Win + R at the same time and in the executable window type "cmd" and press Enter
2. Type the following command at the command prompt, and then press Enter.
slmgr -dli
3. After a short 5 second, the Windows Script Host dialog box will appear where you will see what type of license you are running. (See the following pictures):
