Raspberry Pi 4 & 3 B+ PoE+ HAT – 802.3af/at Power over Ethernet

Power Your Raspberry Pi Over Ethernet – No Extra Cables Needed

Upgrade your Raspberry Pi build with this PoE+ HAT Expanding Board, engineered to deliver clean, stable power directly through your Ethernet cable. Compatible with both the Raspberry Pi 4 and Raspberry Pi 3 Model B+, this HAT eliminates messy power adapters and keeps your workspace tidy — whether you're running a home server, network appliance, digital signage project, or any other Pi-powered creation.

With support for the IEEE 802.3af/at PoE standard and a fully isolated switch-mode power supply, this HAT delivers a reliable 5V DC / 4A output, giving your Raspberry Pi plenty of headroom for demanding peripherals. The built-in 25×25mm controllable brushless cooling fan keeps thermals in check without noise or fuss.

Key Specifications

• Standard: IEEE 802.3af / 802.3at PoE
• Input Voltage: 37–57V DC (Class 4 equipment)
• Output Voltage / Current: 5V DC / 4A
• Current Detection: Yes
• Transformer Type: Flat type
• Cooling Fan: 25×25mm controllable brushless fan — 2.2 CFM airflow
• Power Supply Type: Fully isolated switch-mode
• Compatible With: Raspberry Pi 3B+ / Raspberry Pi 4B
• Board Material: PCB

Why Choose This PoE+ HAT?

• ✅ Single-cable simplicity — power and data over one Ethernet cable
• ✅ Supports 802.3af/at — industry-standard PoE for broad switch compatibility
• ✅ Active cooling — controllable brushless fan prevents throttling under load
• ✅ Fully isolated — switch-mode PSU protects your Pi from electrical noise
• ✅ Tool-free install — snaps directly onto your Pi's GPIO header
• ✅ Beginner & expert friendly — no extra configuration required to get power flowing

What's in the Box

• 1× Raspberry Pi PoE+ HAT Expanding Board Module

Note: Raspberry Pi board and Ethernet cable are not included. Only the HAT module is included as described above.

Made in Mainland China.

Due to different production batches, minor differences in product appearance or printed text may occur — these do not affect performance or functionality. Color may appear slightly different on various screens. Dimensional tolerance: ±1–3mm.

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Learn More About PoE Technology

Want to understand how Power over Ethernet works and its applications? Visit the IEEE & engineering resource libraries or explore the U.S. Department of Energy for information on energy-efficient network infrastructure. For Raspberry Pi-specific community documentation, refer to the official Raspberry Pi Foundation resources.

Frequently Asked Questions

Q: Is this PoE+ HAT compatible with both Raspberry Pi 4 and Raspberry Pi 3 B+?

A: Yes! This PoE+ HAT Expanding Board is fully compatible with both the Raspberry Pi 4 Model B and the Raspberry Pi 3 Model B+. It attaches directly to the 40-pin GPIO header and draws power from a PoE-enabled Ethernet switch or injector.

Q: What PoE standard does this HAT support?

A: This HAT supports the IEEE 802.3af and 802.3at Power over Ethernet standards. It accepts an input voltage of 37–57V DC (Class 4 equipment) and delivers a clean, regulated 5V DC / 4A output to your Raspberry Pi.

Q: Do I need a special Ethernet switch to use this PoE+ HAT?

A: You will need a PoE-capable Ethernet switch or PoE injector that supports the 802.3af or 802.3at standard. Standard (non-PoE) switches will not supply power through the Ethernet cable. Most managed and unmanaged PoE switches on the market are compatible.

Q: How does the cooling fan work on this HAT?

A: The HAT features a 25×25mm controllable brushless cooling fan that delivers 2.2 CFM of airflow. The fan is software-controllable, meaning you can configure it to run based on temperature thresholds, helping to keep your Pi cool during intensive workloads.

Q: Does the HAT come with installation instructions?

A: The HAT is designed for straightforward, tool-free installation — simply align it with the GPIO header on your Raspberry Pi and press it into place. No soldering is required. For detailed software setup, refer to the Raspberry Pi Foundation's official documentation online.