Power Over Ethernet PoE HAT (F) with Cooling Fan and Heatsink for Raspberry Pi 5/CM5

Overview

The PoE HAT (F) is an IEEE 802.3af/at compliant Power over Ethernet (PoE+) expansion board designed for the Raspberry Pi 5 and CM5. Paired with an 802.3af/at compliant PoE switch or router, it delivers both high-speed network connectivity and stable power through a single Ethernet cable—eliminating the need for a separate USB-C power adapter and drastically simplifying cabling for Pi clusters, IoT gateways, and industrial deployments.

Engineered for high performance and reliability, the board integrates a fully isolated Switched-Mode Power Supply (SMPS). It supplies up to 5V 4.5A to the Raspberry Pi via the 40-pin GPIO header, with an additional 12V 2A output on a dedicated 2-pin header and up to 25W combined output power for attached peripherals. An onboard high-speed active cooling fan paired with a metal heatsink keeps the Raspberry Pi 5 running at full speed under sustained load.

Note: The PoE HAT (F) supports the Raspberry Pi 5 and CM5 (via the 40-pin header on a CM5 IO Board) only. It is not compatible with the Raspberry Pi 4B, 3B+, or 3B.

Key Features

🌐 Single-Cable Power & Networking

• IEEE 802.3af/at Compliant: Works with standard PoE/PoE+ switches, routers, or injectors to carry both power and network data over a single RJ45 cable.
• Fully Isolated SMPS: The isolated switched-mode power supply keeps the PoE input electrically separated from the 5V rail, ensuring a clean and stable feed to the Raspberry Pi.

⚡ Dual Power Outputs

• 5V 4.5A on the 40-Pin Header: High-current output powers the Raspberry Pi mainboard and any HATs stacked on top.
• 12V 2A on a 2-Pin Header: A dedicated 12V rail for external fans, sensors, or display modules.
• 25W Max Combined Power: Generous peripheral power headroom across both the 12V and 5V outputs.

❄️ Active Cooling with Metal Heatsink

• Onboard Active Fan: High-speed cooling fan accelerates heat dissipation, keeping the Raspberry Pi 5 from throttling under continuous load.
• Metal Heatsink Included: Ships with a metal heatsink and three thermal tapes for direct contact cooling on the SoC and memory chips.

🔌 Stackable & Expansion Ready

• Pass-Through 40-Pin GPIO: Standard Raspberry Pi 40-pin stackable header allows additional HATs to be mounted on top effortlessly.
• Plug and Play: No drivers or software installation required—the board works as soon as the Raspberry Pi boots.

Power Requirements & Safety Guide

When the Raspberry Pi 5 starts up, it detects the PD protocol on the USB-C port. With PoE power entering through the 40-pin header, that handshake never happens, so the board defaults to a 3A current limit and may display a low-power warning. Because the PoE HAT (F) can supply 5V 4.5A, it is recommended to raise the limit in the EEPROM:

1. Open the EEPROM configuration for editing:

2. Add the following line to remove the 3A limit and allow 5A, then save and reboot:

Installation & Assembly Guide

1. Stick the three thermal tapes onto the Raspberry Pi 5's SoC and memory chips.
2. Seat the metal heatsink over the thermal tapes.
3. Stack the PoE HAT (F) onto the 40-pin GPIO header and secure it with the included screws.
4. Connect an Ethernet cable from an IEEE 802.3af/at compliant PoE switch or router to the PoE RJ45 port on the HAT—the Raspberry Pi powers up with no USB-C adapter attached.
5. (Optional) Raise the Raspberry Pi 5 current limit to 5A via the EEPROM—see the commands in the Power Requirements & Safety Guide above.

Technical Specifications

Packing List

• 1 x PoE HAT (F)
• 1 x Metal Heatsink
• 3 x Thermal Tapes
• 1 x Screws Pack
• Note: Raspberry Pi 5, CM5 IO Board, PoE switch, and Ethernet cable are not included in the package.