A side exposure reverse formation contact unit ground outlet is provided to maintain contact and bending preventing states by the contact of side ground when a side ground plug is inserted. A side exposure reverse formation contact unit ground outlet(10) includes a knife(13) of an outlet and a pair of exposure grounds. A ground unit is contacted with a ground of a plug inserted into the ground. A side exposure reverse formation ground(1) forms the inside of the side exposure reverse formation ground by a contact unit(1-1) with which a side ground of the inserted plug is contacted. A knife is contacted with the knife of the inserted plug.
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