Thanks for posting your question here! The switching power adapter with all our powered hubs supports inputs of 100-240V ~ 50/60 Hz 0.5A, from a standard US plug.
You will not need a power converter since the input (220V/50 Hz) is within the given ranges. You might need a plug adapter though, for no US regions as it is not included in the package.
Hope the above information helps! If you need any additional information, feel free to post back here or shoot us an email at support@plugable.com. We are here to help!