SIMATIC D7-SYS V9.1 incl. D7-FB-GEN, upgrade from V8.1, floating license for one installation, engineering software, software and documentation on CD, license key on USB flash drive, class A, 2 languages (de, en), executable in Windows 10 Professional, Windows 10 Enterprise, Windows Server 2016, Windows Server 2019 reference hardware: SIMATIC TDC, SIMATIC FM 458,