This adaptor is an all one design, there are 4 types of international plugs (UK/US/EU/AU Plug) built into it. You can use the same adaptor to charge multiple devices with the 3 USB ports +1 Type C port +1 universal AC Socket. The input voltage of the USB is 100-240VAC, which means you can use it around the world to charging multiple USB devices at the same time, like your cell phone, Mac,iPad, Power Bank, MP3/4/5 and Camera etc. This one plug covers over 200 countries such as China,US, UK,Europe, Germany,France, Italy,Spain, Switzerland,Ireland, Greece,Japan,India, Africa,Hong Kong, Singapore Australia, New Zealand Brazil, Argentina,Singapore, Fiji,Chile and the list goes on. Small and compact it is very powerful and a great alternative to having to carry stacks of different adaptors.