The PoE Injector allows you to convert a non-PoE port into a PoE port to connect PoE devices up to 328ft away. Powerful 24W (max 30W) PoE Output for IEEE802.3af Devices, 10/100Mbps Safety Protection: Short Circuit, Over Current and Over Voltage Protection. PoE Switch Power Over Adapter, Easy to InstallPlug & play, no configuration is needed, simply connect a PoE network device, accommodates most installations scenario Full test this PoE power supply before shipment, comes with 30 days money back and 1 year warranty.