Retrofit able Locking kit provide strain relief and net lock security at ease of install on existing installation with no rework on jack/plug while providing the maximum security. cover RJ45 connectors and provide strain relief Snap-on assembly Coverts existing RJ45 patch cable to net-Lock patch cable Allows added security either with Orange Finger Release key (part# NL-UK4/2OR-TL) or Red Locking key insert (part#NL-UK4/RD-TL)