With years of experience configuring data transmission and entertainment systems of all sorts, we at Cable For Less know well that sometimes the smallest part can make the biggest difference when finishing connections in your electronic system configurations! That is precisely why we at Cables For Less have searched exhaustively to include as many couplers, adapters, converters, and more in our catalog. Our Couplers feature two female-to-female RJ45 connection point ports allowing for easy cable hook up between two cables, which means they can also extend an existing cable run. Some of these couplers work great for extending your telephone or computer patch cords into any room of the house or office, while others are designed for computer networking applications and work best with our patch cords, patch panels, and wall plates. If you have any questions or need more than what we are showing available in stock, please call one of our sales representatives at 800.273.9556.