Buy rj45 couplers to connect multiple ethernet cables together. With an rj 45 coupler you plug in cables on both sides the ethernet cable coupler will connect them. Using an rj45 inline coupler is as simple as plugging in two cables. Cheap RJ45 to rj45 couplers for networking. Shop ethernet couplers from OutletPC and feel safe and sound knowing you're getting a quality ethernet cable coupler at a great price. We carry all types of network couplers including keystone rj45 coupler.