Patent attributes
An apparatus that is capable of detecting the presence of a plug comprising: a plurality of receptacles configured to receive a plurality of prongs from a plug, wherein the plurality of receptacles includes a first receptacle and a second receptacle; a controller configured to detect whether a first prong of the plurality of prongs is present in the first receptacle; and a switch configured to provide power to the second receptacle. The switch provides power to the second receptacle when the controller detects that the first prong of the plurality of prongs is present in the first receptacle and the switch does not provide power to the second receptacle when the controller does not detect that the first prong is present in the first receptacle.
