20 may additional include a guarding member 80 for deterring unwanted materials from entering the receptacle 74 when the inserting member 18 has not yet been received in the present embodiment the guarding member 80 comprises a movable ring 82 that is concentric with the receptacle 74 and is disposed to move within the receptacle between a first position that is substantially near the annular entrance of the receptacle 74 and a second position that is at a predetermined distance below the receptacle 74 entrance additionally the movable ring 82 is operably coupled to two springs 84 disposed longitudinally within the receptacle 74 having a spring bias towards the first position in this arrangement when the receiving member 20 has not yet received the inserting member 18 the two springs 84 naturally hold the movable ring 82 in the first position to prevent unwanted materials from entering the receptacle 74 conversely the receiving member 20 receives the inserting member 18 the movable ring 82 is depressed towards the second position so as not to obstruct the receival of the inserting member 18 if the movable ring 82 is made from a translucent material one or more user activated lighting assemblies 86 that are electrically coupled to the electrical source can be disposed near the bottom of the receptacle 74 to provide a desirable lighting effect that is viewable when the movable ring 82 is in the first position in operation once the usb plug 54 and auxiliary plug 56 have been aligned with the usb port 68 and the auxiliary port 70 a user may press each pressable portion 58 of the locking mechanism 28 thereby retracting each distal projection 62 to the unlocked position so that the cylindrical extension 52 can be properly received by the receptacle 74.