[Goz3rr]

Or the power supply is sourced from multiple vendors, and other units might not have the same range

[woleium]

Or the power units were from a run that ended up as defective at the higher voltage

[Scoundreller]

Going to be no bueno if donor boards end up on the secondary market.

But now that I think about it, it’s possible they’re fitted with different replaceable fuses (half the amperage in 240v areas).