A cable connector, comprising: a housing comprising a base and a lip, which surrounds the base and defines an aperture configured to receive a mating plug; a plurality of electrical contacts enclosed by the housing and configured to convey electrical signals, the electrical contacts having respective first proximal and first distal ends, the first proximal ends being implanted in the base so that the first distal ends are recessed within the aperture at a first distance from the base; two optical fiber terminals containing end portions of respective optical fibers configured to convey optical signals and having respective second proximal and second distal ends, the second proximal ends being implanted in the base so that the second distal ends are recessed within the aperture at a second distance from the base, which is greater than the first distance; and characterised by: a plurality of structures protruding from the base, wherein the plurality of structures comprises a central structure disposed centrally within the plurality of electrical contacts; two optical fiber terminal containing structures diametrically opposed relative the central structure, wherein each optical fiber terminal is contained within a corresponding one of the two optical fiber terminal containing structures; and two further structures diametrically opposed relative the central structure; wherein the two optical fiber terminal containing structures and the two further structures are regularly spaced around the central structure and partially surround the plurality of electrical contacts; and wherein each of the plurality of structures has a third distal end, each third distal end being recessed in the aperture at the second distance from the base, such that a finger entering the aperture will press against at least one of the plurality of structures and not touch the plurality of electrical contacts. a housing comprising a base and a lip, which surrounds the base and defines an aperture configured to receive a mating plug; a plurality of electrical contacts enclosed by the housing and configured to convey electrical signals, the electrical contacts having respective first proximal and first distal ends, the first proximal ends being implanted in the base so that the first distal ends are recessed within the aperture at a first distance from the base; two optical fiber terminals containing end portions of respective optical fibers configured to convey optical signals and having respective second proximal and second distal ends, the second proximal ends being implanted in the base so that the second distal ends are recessed within the aperture at a second distance from the base, which is greater than the first distance; and characterised by: a plurality of structures protruding from the base, wherein the plurality of structures comprises a central structure disposed centrally within the plurality of electrical contacts; two optical fiber terminal containing structures diametrically opposed relative the central structure, wherein each optical fiber terminal is contained within a corresponding one of the two optical fiber terminal containing structures; and two further structures diametrically opposed relative the central structure; wherein the two optical fiber terminal containing structures and the two further structures are regularly spaced around the central structure and partially surround the plurality of electrical contacts; and wherein each of the plurality of structures has a third distal end, each third distal end being recessed in the aperture at the second distance from the base, such that a finger entering the aperture will press against at least one of the plurality of structures and not touch the plurality of electrical contacts. a central structure disposed centrally within the plurality of electrical contacts; two optical fiber terminal containing structures diametrically opposed relative the central structure, wherein each optical fiber terminal is contained within a corresponding one of the two optical fiber terminal containing structures; and two further structures diametrically opposed relative the central structure; wherein the two optical fiber terminal containing structures and the two further structures are regularly spaced around the central structure and partially surround the plurality of electrical contacts; and wherein each of the plurality of structures has a third distal end, each third distal end being recessed in the aperture at the second distance from the base, such that a finger entering the aperture will press against at least one of the plurality of structures and not touch the plurality of electrical contacts.