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by sveiss
3518 days ago
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The MacBook chargers are designed to be safe without grounding. The grounding pin does have a use, though: some cheap powered USB devices will put out a voltage relative to ground on their '0v' lines. If you touch a MacBook that's plugged into one of these devices, you can get a small shock. If you're using a 3-pin adapter, this doesn't seem to happen. |
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