<br> <b> Solves these problems: </b><br> 1. Control where users connect without the hassle of keyed plugs – Easy to remove with needle nose pliers, but nearly impossible without. Note: All plugs, including keyed plugs, only serve to keep honest people honest, not to prevent intrusion. <br> 2. Dust caps that fall out – Uses a true keystone snap-in clip to stay secure. Port contacts individually insulated at >500mΩ. <br> 3. Identify dead ports - Use to identify switch/router/server ports that do not work. Prevents troubleshooting the same problem twice. <br><br> As a 20-year veteran in telecommunications, I have used many types of port blocks and labeling techniques. My goal with this product is to provide a simple solution that works.