To keep the FeatherWing small, simple and inexpensive, we do not include PoE support. However, it's a common request that some people want to simplify cabling when the device is far away.
This all-in-one solution will let you plug an Ethernet cable to a PoE switch/hub then split into data and a Feather-friendly micro USB connector on the other
If you don't even have a PoE hub, here's a solution that doesn't even require a PoE hub: passive PoE injectors!
These cables don't have any active PoE negotation circuitry, intstead, we just use the extra unused wires in the Cat-5+ wires to carry power and ground. They're a simple and afforable solution.
On one end, plug in the Ethernet cable to your router, and a 5V wall adapter into the 2.1mm jack
Then run any standard Ethernet cable to the other end where you will use a 2.1mm to microUSB adapter cable
And plug that directly into the Feather. For long power runs there might be a slight voltage droop but since the regulator on board will reduce the input voltage to 3.3V for the chip and peripherals (all Feathers are 3.3V logic) it should not be noticable