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1 month agoWhy does the majority of your post read like you don’t know these exist? https://en.wikipedia.org/wiki/Coaxial_power_connector
They’re fine, but as you mentioned in the first paragraph, lack of a standard is their main drawback. You could find two power supplies with the exact same connector but different voltage and polarity.
I think it’s funny for the exact same reason that this xkcd is funny: https://xkcd.com/1168/