NTW net-Lock Lockable Cat5e RJ45 snap-on strain relief convertible boots - Convert your existing RJ45 to a net-Lock Lockable cat5e "Retrofitable Locking kit provide strain relief and netlock 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 exsisting 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)"