A modular connector plug, comprising: a housing formed of insulative material having a longitudinally extending conductor-receiving cavity formed therein opening onto a rear surface of said housing; a plurality of contact-receiving slots formed in a forward region of said housing, said contact-receiving slots communicating with a forward region of said conductor-receiving cavity; a wire guide filter at least partially situated in said conductor-receiving cavity through said opening at said rear surface, said wire guide filter including an impedance containing portion and an internal cable portion, and wherein said impedance containing portion of said wire guide filter comprises a first longitudinally extending body having four longitudinally extending impedance containing passageways, including upper, lower and a pair of side (26b, 26d) impedance containing passageways; and wherein said longitudinally extending body of said impedance containing portion includes a plurality of longitudinally extending walls defining said longitudinally extending passageways (26a, 26b, 26c, 26d) between them; wherein said internal cable guide portion of said wire guide filter is situated forwardly of said impedance containing portion and comprises a second longitudinally extending body having four guide passageways, including upper, lower and a pair of side (30b, 30d) guide passageways; wherein each of said upper, lower and side (26b, 26d) impedance containing passageways is longitudinally aligned with a respective one of said upper, lower and side (30b, 30d) guide passageways; wherein said impedance-containing portion and said internal cable guide portion are integrally formed with each other; and wherein each of the side guide passageways (30b, 30d) is formed by a wall portion formed of conductive material which substantially surrounds at least the upper, lower and inner sides of the respective side guide passageways (30b, 30d) to provide EMI shielding to wire pairs that pass therein; characterized in that at least one of said longitudinally extending walls of said impedance containing portion includes a longitudinally extending edge surface structured and arranged to terminate a shield of a cable to be received in said conductor-receiving cavity. a housing formed of insulative material having a longitudinally extending conductor-receiving cavity formed therein opening onto a rear surface of said housing; a plurality of contact-receiving slots formed in a forward region of said housing, said contact-receiving slots communicating with a forward region of said conductor-receiving cavity; a wire guide filter at least partially situated in said conductor-receiving cavity through said opening at said rear surface, said wire guide filter including an impedance containing portion and an internal cable portion, and wherein said impedance containing portion of said wire guide filter comprises a first longitudinally extending body having four longitudinally extending impedance containing passageways, including upper, lower and a pair of side (26b, 26d) impedance containing passageways; and wherein said longitudinally extending body of said impedance containing portion includes a plurality of longitudinally extending walls defining said longitudinally extending passageways (26a, 26b, 26c, 26d) between them; wherein said internal cable guide portion of said wire guide filter is situated forwardly of said impedance containing portion and comprises a second longitudinally extending body having four guide passageways, including upper, lower and a pair of side (30b, 30d) guide passageways; wherein each of said upper, lower and side (26b, 26d) impedance containing passageways is longitudinally aligned with a respective one of said upper, lower and side (30b, 30d) guide passageways; wherein said impedance-containing portion and said internal cable guide portion are integrally formed with each other; and wherein each of the side guide passageways (30b, 30d) is formed by a wall portion formed of conductive material which substantially surrounds at least the upper, lower and inner sides of the respective side guide passageways (30b, 30d) to provide EMI shielding to wire pairs that pass therein; characterized in that at least one of said longitudinally extending walls of said impedance containing portion includes a longitudinally extending edge surface structured and arranged to terminate a shield of a cable to be received in said conductor-receiving cavity.