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by kalleboo 14 days ago
> The alternative is barrel connectors. If you plug in the wrong one, there's a decent chance that it a) won't work, or b) never work again.

I remember my parents had a D-Link ADSL modem and a D-Link router. They even stacked onto of each other with rubber feet! They had identical-looking power bricks, with the same barrel plug.

They were different voltages!