Review on 🔌 Intellinet PoE Injector - Converts Non-PoE to PoE Connections - Use CAT5 Ethernet Cable with RJ45 to Provide Power and Data – Supplies 15.4W up to 328 ft - Black (524179) by Elvis Kohl

Obviously these are for POE setups and I use them in place of a POE switch because I don't have to worry about replacing the switch and all the pain that comes with accompanied by a good nearby lightning strike will destroy things. You'll love the fact that you can easily change these things to bring the cameras back online with the help of non-web family members when you're not around to make a difference. POE injectors at a good to cheap price and excellent quality. Have been using them in my home setup since 2008.