Permits North American Grounded or Non-Grounded 2 or 3 prong plug to fit into European outlet. American (US) grounded 3-prong input to European 2-prong output. This is just plug adapter. It does not convert voltage 220v to 110v or 110v to 220v. Input : European 2 Prong Grounded Plug (male) with Side Grounding Contacts. Output : North American 2 prong or 3 prong Receptacle (female). Permits North American 3 prong or 2 prong plug to fit into the Grounded European Outlet. This style of plug is mainly used in Germany, France, Finland, Greece, Hungary, Netherlands, Norway, Portugal, Romania, Sweden, Iceland, Turkey, Yugoslavia, Bosnia, Croatia.