When you see 100 to 240V and 50/60Hz on the panel that means you only need to change the cord.
Can I use a corsair rm1000i in America if I just change the power cord? It says it's 100-240v so I think it is the same as the one in the states, with the power cord being the only difference. I am military and will be here until late this year, but need a psu now. Thanks in advance!