PoE Ethernet Power Supply – This PoE HAT board fits Raspberry Pi 4B/3B+, delivering both power and network connectivity via a single Ethernet cable, adhering to IEEE 802.3af/at standards for efficient power management. Active Cooling with Adjustable Fan – The onboard adjustable fan enhances cooling efficiency, ensuring the Pi operates within safe temperature ranges even during extended use, ideal for high-performance applications. Real-Time OLED Display – Features a 0.87inch OLED display that shows vital information such as CPU temperature and IP address, giving users the ability to monitor system performance instantly. Easy Installation and Use – Designed to fit directly into the 40P expansion interface of the Pi 4B/3B+, this HAT board offers a simple plug-and-play setup without any complex wiring or modifications required. Dual Power Output – Supports both 5V and 12V power outputs, with a maximum combined power of 24W, providing versatility for powering various devices connected to your Pi.