https://www.groundcontrol.com/product/poe-power-over-ethernet-injector/
POE (Power Over Ethernet) Injector | Ground Control
Oct 29, 2024 - The DC powered PoE (Power Over Ethernet) injector powers the Cobham Explorer 540 with the Ethernet cable instead of running an additional DC power cable.
poe powerethernet injector
https://www.theregister.com/2025/03/24/raspberry_pi_poweroverethernet/
Raspberry Pi announces a Power-over-Ethernet Injector • The Register
Mar 24, 2025 - : Official PoE+ HAT+ for the Pi 5 still MIA
raspberry piethernet injector