SIMATIC STEP 7 Professional V20 Combo Legacy upgrade V11/2010..V16/2017 Combo-> V20/2021 SR3 Combo floating license including S7 PM engineering software in TIA Portal software and documentation on DVD license key on USB flash drive class A 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 -- content: set (5x DVD + 1x USB)