This Power Over Ethernet HAT (Type B) is designed for Raspberry Pi 3B+/4B, it supports 802.3af Power-Sourcing equipment for PoE function.

Features

• Standard Raspberry Pi 40PIN GPIO header, supports Raspberry Pi 3B+/4B
• PoE (Power Over Ethernet) capability，802.3af-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 the switch
• Integrates PCF8574 IO expander for I2C bus, providing pin P0 for directly fan control, and more spare IO pin

Specifications

• PoE Power input: 37V ~ 57V DC in
• PoE Power output: 5V 2.5A DC out
• Network standard: 802.3af PoE
• Dimensions: 56.5mm x 65mm
• OLED size: 0.91inch
• OLED pixels: 128x32
• OLED driver: SSD1306
• OLED display color: White

User Resources : https://www.waveshare.com/wiki/PoE_HAT_(B)

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