--- product_id: 171239406 title: "5.2V@3.5A 17.5Watt Power Over Ethernet (POE) HAT for Raspberry Pi 4 Model B and Pi 3 Model B+ IEEE 802.3af or 802.3at PoE Network Standard Compliant (Non-Isolated)" brand: "cmc tech" price: "€ 0.04" currency: EUR in_stock: false reviews_count: 8 url: https://www.desertcart.hr/products/171239406-5-2v-3-5a-17-5watt-power-over-ethernet-poe store_origin: HR region: Croatia --- # 5.2V@3.5A output IEEE 802.3af/at compliant Electrical isolation 5.2V@3.5A 17.5Watt Power Over Ethernet (POE) HAT for Raspberry Pi 4 Model B and Pi 3 Model B+ IEEE 802.3af or 802.3at PoE Network Standard Compliant (Non-Isolated) **Brand:** cmc tech **Price:** € 0.04 **Availability:** ❌ Out of Stock ## Summary > ⚙️ Power Your Passion with Precision! ## Quick Answers - **What is this?** 5.2V@3.5A 17.5Watt Power Over Ethernet (POE) HAT for Raspberry Pi 4 Model B and Pi 3 Model B+ IEEE 802.3af or 802.3at PoE Network Standard Compliant (Non-Isolated) by cmc tech - **How much does it cost?** € 0.04 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/171239406-5-2v-3-5a-17-5watt-power-over-ethernet-poe) ## Best For - cmc tech enthusiasts ## Why This Product - Trusted cmc tech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Enhanced Stability:** Requires active air circulation for optimal operation. - • **Compact & Efficient:** Designed for seamless integration into your Raspberry Pi cluster. - • **Standards Compliant:** Fully compliant with IEEE 802.3af/at for reliable performance. - • **Power Up Your Projects:** Delivering a robust 17.5W to fuel your Raspberry Pi adventures. - • **Future-Proof Your Setup:** Compatible with Raspberry Pi 4 Model B and 3 Model B+. ## Overview The 5.2V@3.5A 17.5W Power Over Ethernet (POE) HAT is engineered for Raspberry Pi 4 Model B and Pi 3 Model B+, providing a powerful and efficient solution for powering your projects. With compliance to IEEE 802.3af and 802.3at standards, this HAT ensures electrical isolation and stability, making it a must-have for any serious Raspberry Pi enthusiast. ## Description CMC TECH Power over Ethernet (5.2V@3.5A 17.5Watt) add-on board (HAT) for the Raspberry Pi 4 and Raspberry Pi 3 Model B+. Use this HAT to power a Raspberry Pi via an Ethernet cable, removing the need for a separate power supply, an ideal solution for Pi cluster, embedded and IoT projects. means that the HAT is capable of providing all the power needed for running your Raspberry Pi. You will need power sourcing equipment to power your Pi. This is either provided by your PoE network switch or with power injectors on an Ethernet cable. IEEE 802.3af or 802.3at PoE standard with Section 33.4.1 Compliant Required 33.4.1 – Isolation The PSE shall provide electrical isolation between the PI device circuits, including frame ground (if any), and all PI leads. The PD shall provide electrical isolation between all external conductors, including frame ground (if any), and all PI leads. Ubiquiti, other Passive PoE" (DC 24V or 48V) is not standards-compliant and may cause damage to equipment. We found a few so-called "Smart PoE Switch" with external power adaptor are not truly IEEE Compliant. Verify your PoE Switch specification before purchasing this unit. ## Features - Output up to 5.2V@3.5A (17.5Watt): CMC PoE HAT is capable of providing all the power needed for running your Raspberry Pi with USB storage and other peripherals up to 5.2V@3.5A (17.5Watt). Unlike most other PoE HAT with output only 5V2A or 2.5A. - Compact Low Profile design: Idea for Raspberry Pi Cluster. - For Raspberry Pi 3 Model B+ and Raspberry Pi 4, Not Compatible with Pi 3 and older. - IEEE 802.3af or 802.3at PoE standard with Section 33.4.1 Compliant Required. 33.4.1 – Isolation The PSE shall provide electrical isolation between the PI device circuits, including frame ground (if any). Ubiquiti, other Passive PoE" (DC 24V or 48V) is not standards-compliant and may cause damage to equipment. We found a few so-called "Smart PoE Switch" with external power adaptor are not truly IEEE Compliant. Verify your PoE Switch specification before purchasing this unit. - To ensure stable operation, use this product with active air circulation. Check out B087MZWPN4 for our Deep Case with Fan package ## Product Details - **Brand:** CMC TECH - **Connectivity Technology:** Ethernet - **UPC:** 360505544868 ## Images ![5.2V@3.5A 17.5Watt Power Over Ethernet (POE) HAT for Raspberry Pi 4 Model B and Pi 3 Model B+ IEEE 802.3af or 802.3at PoE Network Standard Compliant (Non-Isolated) - Image 1](https://m.media-amazon.com/images/I/81NiDggXTfL.jpg) ![5.2V@3.5A 17.5Watt Power Over Ethernet (POE) HAT for Raspberry Pi 4 Model B and Pi 3 Model B+ IEEE 802.3af or 802.3at PoE Network Standard Compliant (Non-Isolated) - Image 2](https://m.media-amazon.com/images/I/91buzXij7ML.jpg) ![5.2V@3.5A 17.5Watt Power Over Ethernet (POE) HAT for Raspberry Pi 4 Model B and Pi 3 Model B+ IEEE 802.3af or 802.3at PoE Network Standard Compliant (Non-Isolated) - Image 3](https://m.media-amazon.com/images/I/81uVotT8V3L.jpg) ![5.2V@3.5A 17.5Watt Power Over Ethernet (POE) HAT for Raspberry Pi 4 Model B and Pi 3 Model B+ IEEE 802.3af or 802.3at PoE Network Standard Compliant (Non-Isolated) - Image 4](https://m.media-amazon.com/images/I/81EkcAY6xoL.jpg) ![5.2V@3.5A 17.5Watt Power Over Ethernet (POE) HAT for Raspberry Pi 4 Model B and Pi 3 Model B+ IEEE 802.3af or 802.3at PoE Network Standard Compliant (Non-Isolated) - Image 5](https://m.media-amazon.com/images/I/71ben6eMRIL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Works well with Raspberry Pi 3 B+ and raspBerry Pi 4 *by L***N on Reviewed in the United States on December 20, 2019* Test the POE hat for two days. It works well both with raspberry Pi 3+ and raspberry Pi 4. It supports all the POE switches in my hand including 802.3af and 802.3at POE switches. Of course since it rates at 17.5W, if you want to use the full power capability from this POE hat you'd better stick with 802.3at (25.50 W) rather than 802.3af (12.95 W). However I think it will be fine for raspberry Pi 3+ no matter what kind of POE switch you have.I did the stress test on the 802.3at POE switch with raspberry PI 4, it passed all the tests I put in including cpuburn and some simulator game plays. During the test I hooked one keyboard, one mouse and one external 2.5' inch USB hard drive. I think the power from this POE hat is enough for all kinds of tasks for raspberry PI 4. I am very pleased with this. It did run pretty hot during stress test. If you want to do similar test or you wanna use it under heavy load, do remember adding a heat sink and/or cooling fan for you raspberry Pi.I also tested the power quality by measuring the ripple with a scope during stress test. The RMS is around 6-7mV and P-P noise is less than 100mV. I think it is good for long term use as well.Highly recommended if you want to put POE capability to your raspberry Pi 3B+ or 4. If you use your raspberry Pi as a mini-server or surveillance system it would be very useful. I think with this POE hat you have power to add a hard drive to you raspberry PI for long term use without and issue. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Plug and play, extremely reliable, smart design *by A***R on Reviewed in the United States on June 30, 2020* Love how this PoE hat fits over the pi. Reliable, fast speeds, and >3A power rating complying with 802.11c standards; perfect for the Pi 4. Extra headers on the PoE hat allow for easy rerouting of peripherals/fans (3.3V and 5V with ground options). ### ⭐ 1.0 out of 5 stars No ethernet connection *by K***N on Reviewed in the United States on July 11, 2020* This thing worked to power up a Raspberry PI 4b just fine but the ethernet port would not work most of the time. Sometimes it would come up after a couple minutes, sometimes it never would. Removing the Poe hat and using the regular power supply, the ethenet port works just fine. I was plugging this into a UniFi 8 port Poe switch rated for 60 watts. I tried everything I could find on the internet trying to reset the eth0 once it was booted up but it made no difference. I am returning this unit and going to try a different brand. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/171239406-5-2v-3-5a-17-5watt-power-over-ethernet-poe](https://www.desertcart.hr/products/171239406-5-2v-3-5a-17-5watt-power-over-ethernet-poe) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-23*