Tripp Lite's RJ45 straight inline coupler provides a female-to-female feed-through connection. It allows you to extend the length of an RJ45 patch cable by adding on another RJ45 patch cable. This coupler is not Cat5/Cat5e rated - for use with telephone type applications. For Cat5/Cat5e rated couplers, see Tripp Lite N032-001. Tripp Lite warrants this product to be free from defects in materials and workmanship for life.