Abstract: A transfer switch for providing transfer of electrical signals between pairs of connectors in an array of four connectors, including a transfer structure disposed in a particular plane and formed by a plurality of transfer paths and including an outer circumferential portion formed by three linked portions and three radial portions each extending from a central position within the circumferential portion and each radial portion extending outwardly and intersecting the circumferential portion of the juncture of two linked portions, four connectors coupled to the transfer structure and with individual connectors coupled to the transfer structure at each intersection between a radial portion and two linked portions and with an individual connector coupled to the central position, and a plurality of transfer means individually coupled to the individual transfer paths and with each transfer means including a first position for preventing transfer of electrical signals between a pair of connectors and a second posi