Power Over Ethernet HAT (B) for Raspberry Pi 3B+/4B,802.3af Compliant Power Over Ethernet Accessory Power Sourcing Equipments Needed

Overview The PoE HAT (B) is a 802.3 af-compliant Power Over Ethernet accessory for the Pi 3B+/4B. By using this small HAT and some proper 802.3 af-compliant power sourcing equipments, it is possible to provide both network connection and power supply for your Pi in only one Ethernet cable. Specification POE HAT FOR RASPBERRY PI: Power Over Ethernet HAT For Raspberry Pi 3B+/4B, 802.3 af-Compliant
For Use With Pi 3B+/4B: Standard Pi 40PIN GPIO Stackable Header, Allows Connecting Other HATs
Power Over Ethernet: Providing Both Network Connection And Power Supply For Your Pi In One Cable 0.91"
OLED Display: 128 × 32 Pixels, I2C-Bus Controlled, Monitoring Processor Temperature, IP Address, Fan Status In Real-Time Cooling Fan: Allows Auto Running On Powerup OR Programmable Control, Configured By Switch; Automatically Turn On/Off Depending On The Pi Processor Temperature Onboard PCF8574 Chip: PCF8574 IO Expander For I2C Bus, Providing 8 IO Pins, Of Which P0 For Fan Control; And Extra Spare Pins On Solder Pads (P1-P7, INT) Features Standard Pi 40PIN GPIO header, fits Raspberry Pi 3B+/4B PoE (Power Over Ethernet) capability 802.3 af-compliant Fully isolated switched-mode power supply (SMPS) 0.91" OLED, for monitoring processor temperature, IP address, and fan status in real-time Onboard cooling fan, allows auto running on powerup OR programmable control, configured by switch Integrates PCF8574 IO expander for I2C bus, providing pin P0 for directly fan control, and more spare IO pins Package Content
1. PoE HAT (B) x1
2. Standoffs pack x1