How to get server code using SharePoint Management Shell?

Solution:

Please login the SharePoint server which hosts the central administration, open the SharePoint Management Shell and run the following command line.

Add-Type -AssemblyName "SharePointBoost.License, Version=3.0.0.0, Culture=neutral, PublicKeyToken=15fd9ef9a2ec3a95"

[SharePointBoost.License.LicenseUtilityEx]::GetServerCode()

Then a server code will be returned as following.

Applies for: SharePoint 2019, SharePoint 2016, SharePoint 2013, SharePoint 2010