SIMATIC WinCC Comfort V21, upgrade V11..V20 -> V21 or V11..V20 Combo-> V21 Combo; engineering software in the TIA Portal; floating license; software, documentation and 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 Panels. Please observe product release: support.industry.siemens.com entry ID: 109994474 - - content: 1x USB