Amazon.com: UCTRONICS PoE HAT for Raspberry Pi 4B/3B+, Power Over Ethernet ( PoE) Support 802.3af PoE Network Standard, Compatible with Pi 4B / 3B+ : Electronics
Amazon.com: waveshare Power Over Ethernet (PoE) HAT for Raspberry Pi 4B/3B+, IEEE 802.3af-Compliant, 5V 2.5A DC Output, PoE HAT Onboard Cooling Fan, Compatible with Raspberry Pi Official 4B/3B+ Case : Electronics
UCTRONICS PoE HAT 5V 3A for Raspberry Pi 4B - RobotShop
RAK9003 PoE Pi HAT – RAKwireless Store
Power over Internet(POE) Hat for Raspberry Pi 4/3B+
Raspberry Pi 3 Model B+ Power Over Ethernet Hat 802.3af Poe Network Power-sourcing Equipment Required Support Only Rpi 3b+ - Demo Board - AliExpress
Amazon.com: POE HAT (B) for Raspberry Pi 4B/3B+,Power Over Ethernet HAT with 0.91" OLED,Support 802.3af PoE Network,802.3af Power-Sourcing Equipment Required : Electronics
Power over Ethernet HAT (E) for Raspberry Pi 3B+/4B, 802.3af-compliant - PiShop.us
GAF-Pihat Active Power Over Ethernet (PoE) HAT for Raspberry Pi Pi3B+ – poe -world