The Siemens 6AV2107-4DB05-0AK0 is the SIMATIC WinCC Client for Runtime Professional V15.1, an upgrade from WinCC V7.0 to V7.4 RT/RC 128/RC/RT Client. It is a single license that includes software and a license key for download, but does not come with physical documentation. This version supports five languages: German, English, French, Spanish, and Italian and is compatible with Windows 7 Professional/Enterprise/Ultimate SP1 (64-bit), Windows 10 Professional/Enterprise (64-bit), Windows Server 2008 R2 SP1 (64-bit), Server 2012 R2, and Server 2016 (64-bit). This product has been phased out