you dont need to earth it when the power consumption is so low. The plastic pin ... | Hacker News

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celticninja on May 28, 2012 | parent | context | favorite | on: The Mu - Folding UK 3-pin → USB plug

you dont need to earth it when the power consumption is so low. The plastic pin is essentially to open the covers for the lower 2 pins.

alexchamberlain on May 28, 2012 [–]

Correct. I was pointing out to the parent comment that the earth pin isn't used to form the usual circuit.

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