If you have a device with a European (two round pin) plug and want to charge it at a local US outlet, this Lencent adapter can help you with that! This EU to US adapter can convert an Europe (2 round pin), including type C/E/F plug to an USA (flat pin) plug, adapting your EU devices to US electrical standards. And what we differ from other adapters is that our adapter is WITH a grounded extension and child safety shutters, the appliance's plug can also be very secure inside the adapter, which not only protects the device itself but ensures the safety for you and your family while in use. So Buy With Confiden