What is this- PoE distributor splits the PoE+ signal (8023at) into Gigabit Ethernet and 5V/4A DC supply, which can be adapted to USB-C or 5521 barrel ports.What is PoE- Provide and data through a single Ethernet cable, reducing wall plugs and messy cables. Extend the cord to a place where there is no AC outlet nearby, 300 feet (about 914 meters) from the source.Why choose a PoE splitter- An economical way to add plug-and-play PoE support to 5V -consuming devices, such as Jetson Nano with a barrel port or 4 with a USB-C port.What else is needed- You need a PoE+ switch or injector that complies with IEEE 8023at as a PSE ( supply device) and an Ethernet cable with PoE+ signal to the distributor.Note - 1) This distributor does not support 5V or voltages other than QC/PD protocol. 2) This dispenser requires a PoE+ (8023at) device to release its full . 3) If you don't need data, just put the separated Ethernet aside. 4) Separate Ethernet cables no longer carry .colour:BlackMaterial:plasticPackage Contents:1 x PoE Splitter setOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.