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I bought Thermaltake Toughpower GF A3 850W from Amazon US but I 'm going to use this in Turkey where it is 220V. My old PSU has a switch on it where you can select between 110V or 220V. On Amazon, some users wrote that there is a switch for voltage selection, but I don't see any switch on this new Thermaltake PSU. Shall I just plug the PSU with an appropriate cable, is the selection automatic? This is the unit I bought. Amazon.com: Thermaltake Toughpower GF A3 850W, True 450W 12VHPWR Connectors on PSU & NVIDIA RTX 40 Series, ATX 3.0/PCI-E 5.0, 80+ Gold, SLI/Crossfire Ready Power Supply, PS-TPD-0850FNFAGU-L, 10 Year Warranty : Electronics