I was right about me going through 2 faulty POE injectors. The first was a total dud and the second was an older 100 Mbps model. Bought a couple of these BV Tecg Single Gigabit Ethernet Injectors on Amazon for £19 and they work fine. https://www.amazon.co.uk/BV-Tech-Single-Gigabit-Ethernet-Injector/dp/B00B4H00EO/ ... View more