---
product_id: 284109150
title: "KEYESTUDIO KEYESTUDIO W5100 Ethernet Shield for Arduino Mega 2560 UNO R3 Duemilanove, Easily Connects Arduino to Internet"
brand: "keyestudio"
price: "¥174"
currency: JPY
in_stock: false
url: https://www.desertcart.jp/products/284109150-keyestudio-keyestudio-w5100-ethernet-shield-for-arduino-mega-2560-uno
store_origin: JP
region: Japan
---

# 10/100Mb Ethernet speed Micro-SD card slot for data storage SPI port connection for seamless Arduino integration KEYESTUDIO KEYESTUDIO W5100 Ethernet Shield for Arduino Mega 2560 UNO R3 Duemilanove, Easily Connects Arduino to Internet

**Brand:** keyestudio
**Price:** ¥174
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Connect Your Arduino to the Future of IoT Today!

## Quick Answers

- **What is this?** KEYESTUDIO KEYESTUDIO W5100 Ethernet Shield for Arduino Mega 2560 UNO R3 Duemilanove, Easily Connects Arduino to Internet by keyestudio
- **How much does it cost?** ¥174 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/284109150-keyestudio-keyestudio-w5100-ethernet-shield-for-arduino-mega-2560-uno)

## Best For

- keyestudio enthusiasts

## Why This Product

- Trusted keyestudio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Micro-SD Storage Ready:** Serve files or log data directly from the shield’s onboard micro-SD slot.
- • **Robust W5100 Ethernet Chip:** Reliable 16K buffer and TCP/UDP stack for smooth multi-socket networking.
- • **Built-in Reset & Status LEDs:** Quick troubleshooting and control with dedicated reset button and informative LEDs.
- • **Plug & Play Internet Control:** Instantly transform your Arduino into a web-connected powerhouse with simple setup.
- • **Universal Arduino Compatibility:** Works flawlessly with Arduino Mega 2560, UNO R3, and Duemilanove boards.

## Overview

The KEYESTUDIO W5100 Ethernet Shield is a compact, plug-and-play module that enables Arduino boards to connect to the internet via a 10/100Mb Ethernet interface. Featuring the robust W5100 chip with a 16K buffer and support for up to four simultaneous TCP/UDP sockets, it also includes a micro-SD card slot for data storage and file serving. Compatible with major Arduino models and supported by the official Ethernet library, this shield is perfect for professionals looking to build connected IoT projects with ease.

## Description

Description: Just plug this module onto your Arduino board, connect it to your network with an RJ45 cable (not included) and follow a few simple instructions to start controlling your world through the internet.  Specification: Requires an Arduino board (not included) Operating voltage 5V (supplied from the Arduino Board) Ethernet Controller: W5100 with internal 16K buffer Connection speed: 10/100Mb Connection with Arduino on SPI port It is based on the W5100 ethernet chip The reset button on the shield resets both the W5100 and the Arduino board. The W5100 provides a network (IP) stack capable of both TCP and UDP. It supports up to four simultaneous socket connections.  Use the Ethernet library to write sketches which connect to the internet using the shield. The shield contains a number of informational LEDs. It is compatible with all the Arduino/Genuino boards, such as Arduino mega 2560, U&O R3  The Original Box Includes 1 x KEYESTUDIO Ethernet Shield W5100

## Features

- Please note: MAC addresses are not unique. keyestudio W5100 Ethernet Shield gives you an easy way to get your Arduino Online.
- It can turn your Arduino into a simple web server or use the Internet to read /write its digital and analog outputs/inputs.
- It is directly supported by Arduino official Ethernet Library. It also supports the read &write of mini SD card (TF card).
- Adds a micro-SD card slot, can be used to store files for serving over the network
- How to use: Search for "keyestudio wiki KS0156" in Google Chrome to get the wiki online tutorial for this product.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | KEYESTUDIO |
| Product Dimensions | 11.18 x 6.86 x 3.3 cm; 45.36 g |
| Item model number | 8541582678 |
| Manufacturer | keyes |
| Series | KEYESTUDIO W5100 Ethernet Shield |
| Standing screen display size | 1 Centimeters |
| Processor Count | 1 |
| Memory Technology | DDR2 |
| Operating System | Chrome,Mac |
| Are Batteries Included | No |
| Item Weight | 45.4 g |

## Product Details

- **Brand:** KEYESTUDIO
- **Model name:** KEYESTUDIO W5100 Ethernet Shield
- **Connectivity technology:** Ethernet
- **Included components:** KEYESTUDIO Ethernet Shield W5100
- **Operating system:** Chrome,Mac

## Images

![KEYESTUDIO KEYESTUDIO W5100 Ethernet Shield for Arduino Mega 2560 UNO R3 Duemilanove, Easily Connects Arduino to Internet - Image 1](https://m.media-amazon.com/images/I/71y5qm1WCBL.jpg)
![KEYESTUDIO KEYESTUDIO W5100 Ethernet Shield for Arduino Mega 2560 UNO R3 Duemilanove, Easily Connects Arduino to Internet - Image 2](https://m.media-amazon.com/images/I/61rdktihI+L.jpg)
![KEYESTUDIO KEYESTUDIO W5100 Ethernet Shield for Arduino Mega 2560 UNO R3 Duemilanove, Easily Connects Arduino to Internet - Image 3](https://m.media-amazon.com/images/I/61o9o7eOAWL.jpg)
![KEYESTUDIO KEYESTUDIO W5100 Ethernet Shield for Arduino Mega 2560 UNO R3 Duemilanove, Easily Connects Arduino to Internet - Image 4](https://m.media-amazon.com/images/I/61M2dKpGfAL.jpg)
![KEYESTUDIO KEYESTUDIO W5100 Ethernet Shield for Arduino Mega 2560 UNO R3 Duemilanove, Easily Connects Arduino to Internet - Image 5](https://m.media-amazon.com/images/I/712jmye4pCL.jpg)

---

## 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.jp/products/284109150-keyestudio-keyestudio-w5100-ethernet-shield-for-arduino-mega-2560-uno](https://www.desertcart.jp/products/284109150-keyestudio-keyestudio-w5100-ethernet-shield-for-arduino-mega-2560-uno)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-19*