PoE HAT (J)

The PoE HAT (J) is a Power over Ethernet (PoE) expansion board for the Raspberry Pi 5, compliant with IEEE 802.3af/at network standards. It is designed for use with PoE routers or switches that support IEEE 802.3af/at standards, allowing the Raspberry Pi to be both powered and connected to the network using a single Ethernet cable.

SKU	Product
34611	PoE HAT (J)
34612	PoE HAT (J) Acce A

Features

• Do not hot-plug this device.
• Based on the Raspberry Pi 40PIN GPIO interface.
• Supports PoE Power over Ethernet, compliant with IEEE 802.3af/at PoE standards.
• Onboard imported IC solution for more stable PoE power delivery.
• Uses an isolated switching mode power supply.
• Compact and easy to assemble.

Dimensions

Usage Information

Usage

• Connect this board to a device with a PoE-capable header.

• Supply PoE power through the Ethernet port.

  

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Power Limit Warning

• The Raspberry Pi board detects USB supply current. If the maximum 5A current is not reached, it will limit the USB (TYPE-A) output current. Since PoE HAT (J) powers the board through the 40PIN header, this current limiting situation also applies.

  

  • Method 1: Only disable USB (TYPE-A) current limiting, without eliminating the boot-time warning message.
    • Run the following command to open config.txt for editing:

      sudo nano /boot/firmware/config.txt

    • Add the following setting to remove the 3A current limit on USB (TYPE-A) and provide 5A current:

      usb_max_current_enable=1

  • Method 2: Eliminate the boot-time warning message and disable USB (TYPE-A) current limiting.
    • Run the following command to open eeprom for editing:

      sudo rpi-eeprom-config --edit

    • Add the following setting to remove the 3A current limit on USB (TYPE-A), provide 5A current, and eliminate the boot-time current limit warning:

      PSU_MAX_CURRENT=5000

    

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