Windows Server 2012 R2 Essentials OEM
Windows Server 2012 R2 - Essentials - Server Environment - 25 CALs Included - Supports up to 2 Physical Processors - 64-bit Version - 64GB Maximum Memory - Supports up to 1 Virtual Machines - OEM License - DVD Included
Microsoft Server 2022 Essentials ( for 1-CPU, max to 10-cores ) License
Windows Server 2022 - Essentials - Server Environment - Supports up to to 10-Cores Physical Processors - 64-bit Version - OEM License - sell it w/ SYSTEM only