SF Cable CaT6 RJ45 Shielded FTP LAN Network Inline Coupler for Ethernet Cable For use with Cat.6 Ethernet cables; Backward compatible with lower rated category components If you need to link several networking cables together, or extending existing cable runs, In-line Cat.6 Coupler can help you make the right connection The in-line coupler provides a female-to-female feed-through connection for easy cable hook-up The 1-1 wiring configuration is compatible with both T568A and T568B wiring schemes Lifetime Warranty