Wiring adapter for 220v 50w laser doesn’t make sense

[MadGumby]

My 50w laser just arrived. I know that it is 220v. I look at the PC power supply and it says 220v AC. The power cord that came with the unit has a Jack Contact 3 pin connector on one end (P20K3Q) that plugs into the unit. The other end, I expected to have a large 220v connector, but instead it has normal looking 110v prongs. I assume I need to cut the end off and use a new male end but I have no idea which is the hot wire? I peeled the cord case back and it has a black, white, and green but I don’t know which is which? Am I over thinking this?

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[fixtureman1]

White and black will be hot and green is ground 220 does not use a neutral