WinCC/IndustrialDataBridge V8.1, upgrade from V7.4/7.5 -> V8.1, option for WinCC V8.1 and WinCC Professional, data exchange with databases and OPC servers, runtime/configuration software on CD-ROM, single license, license key on USB flash drive please observe product release: support.industry.siemens.com SIOS entry ID: 109973487