This is a Windows Server 2022 Datacenter ROK (Reseller Option Kit) licence for a 16-core pack, in a multi-language edition, sold through Lenovo's Data Centre Group as a licence bundled specifically for installation on Lenovo server hardware. Datacenter edition is Microsoft's top licensing tier, with the key benefit being unlimited Windows Server virtual machine rights on the licensed physical host, alongside features such as Storage Spaces Direct and Shielded VMs — making it the right choice for organisations planning to run many virtual machines on one Lenovo server rather than a lightly virtualised or single-purpose setup. A ROK licence is tied to the Lenovo hardware it ships with rather than being a standalone retail licence.