We get this on a regular basis shopping for in Britain. Typically IT equipment comes with two energy cables; one for the UK and both one for the US or one for Central Europe so we frequently have a spare cable we will’t use laid round. You’ve acquired a unit meant for the UK market.
Until you’re unfortunate and the facility cable is soldered to the board, Most IT equipment as of late comes with a detachable mains energy cable and a switching energy provide which is appropriate for US 110v or Europe 230-240v so you possibly can swap the cable with one from an IT store native to you and plug it in immediately with no points.
Within the case of your Xbox, so far as I do know the facility provide is an auto switching sort so ought to be advantageous with the US provide however double test the facility specs on the again of the Xbox to substantiate. Different connections ought to be advantageous too.