The plug side that goes into the PSU is not standard.
The PSU is an EVGA 1600 G2 supernova.
How do I plug this in? I can’t find a compatible cable or plug adapter.
From google images it looks like this PSU has an IEC C20 male connector on it meaning you would need an IEC C19 end on your cable. C19/20 is a higher amperage version of C13/14 which is what could be considered standard on a normal consumer PSU. Google C19 to whatever plug your 220v outlet needs and you should find the appropriate cable.
There should be a switch that flips the input between 110/220 and you will need a different cable for the PSU
Will that work for US split-phase “220” where the voltage is 110v on each leg? I was always worried that would fry the PSU since it’s not true 220V.