SIMATIC STEP 7 Professional V20/2021 SR3 Combo including TIA Portal; floating license for 1 user; engineering software; software and documentation on DVD, license key on USB flash drive; class A; 5/9 languages (de,en,fr,es,it)/(zh,ru,ja,ko); executable in Windows Server 2016/2019/2022, Windows 10/11 Professional, Windows 10/11 Enterprise; reference hardware: S7-300/400 (S7-1200/1500)