What does this power adapter symbol mean?
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Question
I have a laptop power brick with this symbol on it.
It reminds me of a Class II symbol:
but is, obviously, different.
The central symbol looks like a noiseless (clean) earth (ground) symbol (see here):
It's unclear what the two symbols might mean if they're nested.
Answer
This is symbol is meant to "identify a piece of class II equipment with the functional earthing (grounding)." (Source)