Windows Server 2019 Desktop remoto (RDS) CAL per 50 dispositivi (fisico)
Microsoft® Windows Server 2019 RDS CALs 50 Devices. Any earlier versions are covered under higher releases. So if you have Windows Server 2022 RDS CALs, they are valid for any server that is running 2008 R2, 2012 & 2012 R2, 2016, 2019 and 2022.