---
title: "XIAO W5500 Ethernet Adapter"
url: "https://maker.wiznet.io/scott/resellers/xiao-w5500-ethernet-adapter-1/"
markdown_url: "https://maker.wiznet.io/scott/resellers/xiao-w5500-ethernet-adapter-1/md"
type: "VAR: Value-Added Reseller Products"
author: "Seeedstuido"
author_url: "https://wiki.seeedstudio.com/xiao_w5500_ethernet_adapter/"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "Seeedstuido"
original_url: "https://wiki.seeedstudio.com/xiao_w5500_ethernet_adapter/"
published: "2025-09-24"
language: "en"
hardware: ["WIZnet W5500"]
likes: 0
views: 1868
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# XIAO W5500 Ethernet Adapter

> The Seeed XIAO W5500 Ethernet Adapter is a PoE IoT board offering stable wired networking and flexible development.

Original author: Seeedstuido (source: https://wiki.seeedstudio.com/xiao_w5500_ethernet_adapter/)

## Components

- **WIZnet W5500** x 1 ([docs](https://docs.wiznet.io/Product/Chip/Ethernet/W5500))

WIZnet parts: W5500 ([Datasheet](https://docs.wiznet.io/Product/Chip/Ethernet/W5500/datasheet?utm_source=maker&utm_medium=project&utm_campaign=w5500), [product hub](https://maker.wiznet.io/products/w5500/))

## Article

## **Power and Data Through a Single Cable**

IoT devices and smart home systems increasingly demand stable network connections. However, Wi-Fi often comes with limitations such as unstable signals, complex power requirements, and security risks.
The **Seeed XIAO W5500 Ethernet Adapter** addresses these challenges by integrating **Power over Ethernet (PoE)**, allowing both power and data to be delivered through a single Ethernet cable. This design provides network stability while simplifying wiring.

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## **Key Specifications**

- **MCU**: ESP32-S3 Plus (with Wi-Fi & BLE support)

- **Ethernet**: WIZnet W5500 (10/100 Mbps, hardware TCP/IP support)

- **PoE Module**: MQ7813T120 (IEEE 802.3af, with isolation)

- **Power Conversion**: TPS563201 buck converter (stable 5 V output)

- **Input Options**: PoE or USB-C 5 V supply

- **Form Factor**: 83 × 118 × 26 mm, 75 g, 3D-printed enclosure

- **Price**: $19.9

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## **Intended Use Cases**

This device is not just a simple Ethernet-to-Wi-Fi converter. It is a **full-fledged IoT development board** where developers can upload their own firmware and decide how the system should behave.

Seeed envisions this board being used as:

- **IoT sensor hubs**: Stable wired data collection and transmission

- **Smart home devices**: Lighting, door locks, and energy management systems

- **Industrial monitoring**: Environments where reliable power and network are essential

- **Camera streaming units**: Security or monitoring cameras with minimal latency

---

## **Demo Projects Provided**

Seeed offers three ready-to-use demos in the official wiki to help developers get started:

**1.Ethernet Events Logger**

- Logs network events (connection, disconnection, errors).

- Useful for monitoring and debugging IoT gateways.

**2.Ethernet WebServer**

- Runs a basic HTTP server accessible via IP.

- Can display sensor data or control devices remotely.

**3.Ethernet Camera Streaming**

- Works with the ESP32-S3 Sense camera module.

- Provides real-time video streaming over Ethernet.

These demos illustrate the adapter’s versatility—from simple logging, to web-based device control, and even multimedia streaming.

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## **Why It Stands Out**

- **PoE integration**: Power and network over one cable, simplifying deployment.

- **Flexibility**: Use either Wi-Fi or Ethernet depending on your needs.

- **Expandability**: Connect with various sensors and modules.

- **Open-source resources**: Schematics, 3D models, and sample code are all available.

This makes the XIAO W5500 more than just an “adapter”—it is a **robust and cost-effective IoT platform**.

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## **Final Thoughts**

At first glance, the name “Adapter” suggests a simple bridge between Ethernet and Wi-Fi. In reality, the **Seeed XIAO W5500 Ethernet Adapter** is a complete IoT board with PoE, designed to deliver stability, efficiency, and developer flexibility—all for under $20.

From smart homes to industrial monitoring, this board offers developers a reliable foundation for building Ethernet-powered IoT solutions.

---

🔗 Related article: [Introducing XIAO W5500 Ethernet Adapter – Available Now at $19.9](https://www.seeedstudio.com/blog/2025/06/19/introducing-xiao-w5500-ethernet-adaptor-available-now-at-19-9/?utm_source=chatgpt.com)

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Source: https://maker.wiznet.io/scott/resellers/xiao-w5500-ethernet-adapter-1/