Cat6 RJ45 Keystone Jack Network Coupler TheC6KEYCOUPLWH White Cat6 RJ45 Coupler offers a practical, cost-effective solution for joining two of your Category 6 patch cables together, enabling you to extend the length of both cables in order to form one longer cable. With the form factor design of an RJ45 Keystone Jack, this network coupler can also be installed in a keystone wall plate or patch panel. Durably constructed of only top quality materials, this keystone coupler is backed by StarTech.coms Lifetime Warranty.