RJ45 Coupler Usage: Connecting 2 male network cables together and extend the length of network cable.. Using this RJ45 in-Line Coupler can save cost and time compared with replacing a network with insufficient length.. They have nickel-plated contacts and snap-in fixtures to aligned accurately and safely to achieve reliable connections.. Meets Category 6 performance in compliance with the TIA/EIA 568-C. 2 standard. RoHS compliant. Thickened PCB Board, Metallic Shielded, Robust and Durable.. RJ45 Ethernet couplers are compatible with Cat7, Cat6, Cat5 and Cat5e networks.