An enclosure system for receiving a cable, comprising: an enclosure having an inner chamber and an open position exposing the inner chamber and a closed position covering the inner chamber; a cable receiving port in a wall of the enclosure and extending along a longitudinal axis from outside of the enclosure into the inner chamber, wherein the cable receiving port is configured to receive a cable therein when the cable is advanced axially into the port without rotation of the cable; a mating member associated with the cable receiving port that limits rotation of the cable when the cable is advanced axially into the port; an axial retention member associated with the cable receiving port that is configured to limit axial movement of the cable out of the port without rotation of the cable or a body member of a cable plug; characterised in that: the axial retention member is configured to limit axial movement of the cable out of the port responsive to advancement of the cable axially into the port; the cable receiving port is configured to receive a cable therein when the cable is advanced axially into the port when the enclosure is in the closed position; and wherein the axial retention member comprises: a retention spring movably mounted to the enclosure and having an engaged position and a released position, wherein the retention spring has a retaining tab at an end thereof that is positioned to be received in an engagement member of the plug surrounding the cable when the cable with the plug thereon is advanced axially into the port to the locked position and the retention spring is in the engaged position to limit axial movement of the plug and cable out of the port; and a manually actuable actuator tab operably coupled to the retention spring and having a first position in which the retention spring is free to move to its engaged position and a second position in which the actuator tab holds the retention spring in its released position with the retaining tab removed from the engagement member to allow the plug and cable to be moved axially out of the port. an enclosure having an inner chamber and an open position exposing the inner chamber and a closed position covering the inner chamber; a cable receiving port in a wall of the enclosure and extending along a longitudinal axis from outside of the enclosure into the inner chamber, wherein the cable receiving port is configured to receive a cable therein when the cable is advanced axially into the port without rotation of the cable; a mating member associated with the cable receiving port that limits rotation of the cable when the cable is advanced axially into the port; an axial retention member associated with the cable receiving port that is configured to limit axial movement of the cable out of the port without rotation of the cable or a body member of a cable plug; the axial retention member is configured to limit axial movement of the cable out of the port responsive to advancement of the cable axially into the port; the cable receiving port is configured to receive a cable therein when the cable is advanced axially into the port when the enclosure is in the closed position; and a retention spring movably mounted to the enclosure and having an engaged position and a released position, wherein the retention spring has a retaining tab at an end thereof that is positioned to be received in an engagement member of the plug surrounding the cable when the cable with the plug thereon is advanced axially into the port to the locked position and the retention spring is in the engaged position to limit axial movement of the plug and cable out of the port; and a manually actuable actuator tab operably coupled to the retention spring and having a first position in which the retention spring is free to move to its engaged position and a second position in which the actuator tab holds the retention spring in its released position with the retaining tab removed from the engagement member to allow the plug and cable to be moved axially out of the port.