Today's hardware WTF: HDMI monitor deliberately back-feeding 5V power to the source. Through a diode, even. Why on earth‽
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Maybe they were confused ;)
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that’s how some HDMI devices get power, I think. I’ve seen the schematic of some TVs and a few seem to do this. not sure if bug or feature. that’s why the Pi provides 5V but thru a diode.
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