Extend the length on your Cat5e patch cable - Ethernet Coupler - Cat5e Coupler - RJ45 to RJ45 Coupler - 10 pack RJ45 Couplers - 10 pack Modular Inline Couplers - Couple two Cat 5e RJ45 network cables together and eliminate the need of replacing existing cables - Dual RJ45 female connectors - Guaranteed reliability