An electrical plug or power adapter is described which includes a housing and a plurality of retractable prongs forming at least one retractable prong set. The prongs of each prong set are rotatable simultaneously between a retracted position in which the prongs are positioned within the housing and a deployed position in which the prongs extend out of the housing to be inserted into an electrical outlet. The electrical plug or adapter includes at least one gear-based driving mechanism coupled to a corresponding retractable prong set for driving the simultaneous rotation of the prongs of the prong set. The gear-based driving mechanism includes a driver accessible from the housing for actuation of the corresponding gear-based driving mechanism.