SIMATIC STEP 7 Professional V20 Combo Legacy; upgrade V11/2010..V16/2017 Combo-> V20/2021 SR3 Combo; floating license DL; including S7PM; engineering software in TIA Portal; software, documentation and license key for download; 9 languages: de,en,zh included, fr,es,it,ru,ja,ko as download; for configuration of SIMATIC S7-1500/1200/300/400/WinAC, SIMATIC Basic Panels, SIMATIC Unified Basic Panels. -- for system requirements specification, see www.siemens.com/compatool -- consignee email address required for delivery.