There is a female jack on both sides of the connector so you can plug a cable into the back, as well as into the front.<br> The couplers provide a full range of solutions for voice, home networking, home office, audio, video and more. <br><br> Feature:<br> Type : RJ45 female to RJ45 female connector<br> Plastic housing Gold plated contacts, straight-through wiring.<br> Material : PC/copper/Tin plated<br> Color : Grey<br> Standard: 8P8C (female-female)<br> Dimension: 34 x 15 x 21mm/1.35 x 0.62 x 0.82inch(L x W x H)