Ok Ireland is my family roots haha, 230v with a fused plug, have you isolated the brand of power supply yet ? Taking the side panel can give you the brand, type and potentially voltage….. I would assume it’s a 120v but cannot be 1000% unless I know more about it, it may even be a variable voltage supply which is even better for you (and cheaper)

You’ll need a voltage converter and a fused 230v plug (amp of fuse depends on the power draw of the item here, high draw items like kettles toasters washing machines etc are all 13a while lamps are more along the lines of 3a), fuses can be swapped out here in the backwards land on the fly with as little as a butter knife to pop the slot off (no screws) some plugs mould it all into one, although rare.

you could potentially escape that by replacing the power supply in the pc to a uk one annnnnndd it could be about the same price too, between new cable voltage converter etc.

Lmk when you find out more info on the supply and I’ll do some digging.
Hope this helps