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Green rectangular circuit board with gold GPIO header and Ethernet port

SMUGDESK

SMUGDESK POE HAT (C) Switch Module 802.3af/at 5V 12V

SKU CH-Y4Y0-7NHFB

Adds IEEE 802.3af/at PoE power and dual 5V/12V outputs to Raspberry Pi 4B and 3B+ with built-in protection

  • IEEE 802.3af/at compliance delivers power and data through one Ethernet cable
  • Dual 5V and 12V outputs drive fans, cameras and other peripherals without extra adapters
  • Stacked design fits Raspberry Pi 4B and 3B+ GPIO headers perfectly
  • Built-in overcurrent, overvoltage and short-circuit protection guards the Raspberry Pi board
  • Compact form factor saves desk space for cabinet and embedded deployments

Target Platform & Compliance

The SMUGDESK POE HAT (C) is a Power over Ethernet expansion board built exclusively for Raspberry Pi 4 Model B and Raspberry Pi 3B+. It complies with the IEEE 802.3af/at standard to deliver both data and power through a single Ethernet cable. This module suits makers deploying compact network appliances, NAS nodes or IoT gateways where a separate mains adapter is impractical. It is not for users needing PoE on other single-board computers or on earlier Pi models.

Pre-Installation Checks

Verify that your network infrastructure supplies IEEE 802.3af/at compliant PoE power, as non-standard injectors will not activate the board. Confirm the host board is a Raspberry Pi 4B or 3B+ so the GPIO header aligns with the stacked connector. Ensure the Ethernet cable run uses CAT5e or CAT6 wiring capable of carrying the required power budget. No additional driver installation is needed on the Pi operating system.

Dual-Voltage Breakout Benefits

The board exposes independent 5V and 12V output terminals that can drive fans, relay modules, LED strips or small cameras directly from the PoE source. This removes the need for extra power banks or buck converters when adding peripherals to the Pi. Integrated overcurrent, overvoltage and short-circuit protection automatically disconnects the outputs during fault conditions to protect the host board.

Highlights

  • IEEE 802.3af/at compliance delivers power and data through one Ethernet cable
  • Dual 5V and 12V outputs drive fans, cameras and other peripherals without extra adapters
  • Stacked design fits Raspberry Pi 4B and 3B+ GPIO headers perfectly
  • Built-in overcurrent, overvoltage and short-circuit protection guards the Raspberry Pi board
  • Compact form factor saves desk space for cabinet and embedded deployments

Specifications

No published specifications for this item yet.

Questions about this item

Does the POE HAT (C) come with a Raspberry Pi or Ethernet cable, or must they be purchased separately?

The module is sold alone; a Raspberry Pi 4B or 3B+ and a CAT5e/CAT6 Ethernet cable are required but not included.

Which Raspberry Pi models does this POE HAT (C) support?

It is designed exclusively for Raspberry Pi 4 Model B and Raspberry Pi 3B+ with exact GPIO pin alignment.

What does the 802.3af/at compliance mean for daily operation?

It allows the board to receive both power and data through one Ethernet cable from a compatible switch or injector, removing the need for a separate power adapter.

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