--- product_id: 77492599 title: "Ethernet W5100 Shield Network Expansion Board w/ Micro SD Card Slot for Arduino" brand: "hiletgo" price: "162 kr" currency: DKK in_stock: true reviews_count: 8 category: "Hi Letgo" url: https://www.desertcart.dk/products/77492599-ethernet-w5100-shield-network-expansion-board-w-micro-sd-card store_origin: DK region: Denmark --- # 10/100Mb Ethernet speed 2GB Micro SD card support 4 simultaneous socket connections Ethernet W5100 Shield Network Expansion Board w/ Micro SD Card Slot for Arduino **Brand:** hiletgo **Price:** 162 kr **Availability:** ✅ In Stock ## Summary > 🚀 Elevate your Arduino projects with lightning-fast Ethernet and smart storage! ## Quick Answers - **What is this?** Ethernet W5100 Shield Network Expansion Board w/ Micro SD Card Slot for Arduino by hiletgo - **How much does it cost?** 162 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/77492599-ethernet-w5100-shield-network-expansion-board-w-micro-sd-card) ## Best For - hiletgo enthusiasts ## Why This Product - Trusted hiletgo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Reliable 5V Operation:** Stable power compatibility ensures smooth performance across all supported Arduino models. - • **Expandable Storage Onboard:** Serve files directly from a Micro SD card up to 2GB, perfect for dynamic data hosting. - • **Plug & Play Stackable Design:** Effortlessly stack with Arduino Uno, Mega, and Duemilanove boards using official libraries. - • **Seamless Internet Integration:** Transform your Arduino into a powerful web server with the Wiznet W5100 chipset. - • **Robust Multi-Connection Support:** Handle up to four simultaneous network sockets for complex projects without lag. ## Overview The Ethernet W5100 Shield is a versatile network expansion board designed for Arduino Uno, Mega, and Duemilanove. Featuring the Wiznet W5100 Ethernet controller, it delivers 10/100Mb connection speeds and supports up to four simultaneous socket connections. With an integrated Micro SD card slot supporting up to 2GB, it enables file serving capabilities directly from the board. Its stackable design and compatibility with official Arduino Ethernet libraries make it an essential upgrade for IoT and web server projects. ## Description Package content: 1 X Ethernet Shield W5100 Development boardor For Arduino UNO Mega 2560 1280 328 UNR . Product Description: 1. Based on the W5100Based on the Wiznet W5100 allows an Arduino board to connect to the internet. 2. Stackable Design, can directly supported by for Arduino official Ethernet Library. 3. Supports up to four simultaneous socket connections 4. can use to store files for serving over the network. 5. Compatible with the for Arduino Duemilanove (168 or 328), Uno as well as Mega (1280/2560). 6. Can be accessed using the Mini SD TF library. 7. Operating voltage :5V. 8. Ethernet Controller: W5100 with internal 16K buffer. 9. Connection speed: 10/100Mb. 10. Connection with Arduino on SPI port . Review: Worked like a charm - Worked like a charm. Its hard to get proper working ones these days. Had a bad time buying duplicate stuff in ebay. Review: Very good - The ethernet shield is working without any issues. Packing was very good. Using for more than two months without any problem. ## Features - Material: FR4 + Electronic components - The Arduino Ethernet W5100 network expansion module allows the Arduino to be a simple Web server - Supports reading and writing mini SD / TF card - With Micro SD card slot, supports SD card up to 2GB, supports MEGA, Uno ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00AXVX5D0 | | Best Sellers Rank | #23,197 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #155 in Motherboards | | Brand | HiLetgo | | Brand Name | HiLetgo | | Compatible Devices | Personal Computer | | Connectivity Technology | Ethernet, USB | | Customer Reviews | 4.0 out of 5 stars 236 Reviews | | Item Weight Unit of Measure | 32 g | | Manufacturer | Generic | | Manufacturer Part Number | 3-01-0441-D | | Memory Storage Capacity | 2 GB | | Model Name | Ethernet W5100 Shield | | Model Number | 8541585431 | | Network Connectivity Technology | Ethernet, USB | | Operating System | FreeRTOS | | Processor Count | 1 | | RAM Memory Technology | DDR2 | | Total USB Ports | 2 | | UPC | 695278222645 | | Unit Count | 1 Count | | Wireless Communication Standard | Bluetooth | | Wireless Compability | Bluetooth | ## Product Details - **Brand:** HiLetgo - **Connectivity Technology:** Ethernet - **Memory Storage Capacity:** 2 GB - **Model Name:** HiLetgo W5100 Ethernet Network Shield - **Ram Memory Installed Size:** 2 GB ## Images ![Ethernet W5100 Shield Network Expansion Board w/ Micro SD Card Slot for Arduino - Image 1](https://m.media-amazon.com/images/I/51UWQp2xduL.jpg) ![Ethernet W5100 Shield Network Expansion Board w/ Micro SD Card Slot for Arduino - Image 2](https://m.media-amazon.com/images/I/513L8c+ocyL.jpg) ![Ethernet W5100 Shield Network Expansion Board w/ Micro SD Card Slot for Arduino - Image 3](https://m.media-amazon.com/images/I/414m9te3zNL.jpg) ![Ethernet W5100 Shield Network Expansion Board w/ Micro SD Card Slot for Arduino - Image 4](https://m.media-amazon.com/images/I/41zwQvmnqDL.jpg) ## Questions & Answers **Q: What's the purpose of the smd near the reset button? it's not present on the official arduino version.** A: Hello,The product I received was of such poor construction (bent and uneven pin lengths, excess solder blobs and flux, overall low quality) I didn't even try to use it. I purchased another one at Radio Shack made by SeedStudios, and it worked. The SMD is most likely a EEPROM if I had to guess. Sorry I cannot provide more information. Since that time I have moved on to Teensy 3.1 and LC's (ARM) and use a Wiznet module I purchased from Mouser for IP based connectivity. If you need more horsepower I recommend https://www.pjrc.com/teensy/teensy31.html , great forums and better product. **Q: Will this ethernet shield work with the Arduino Due?** A: I don't know, but I can't imagine why it wouldn't. The pin configuration is the same as an arduino r3 for all the pins that are important to the shield. However, if you are planning to use the lcd board, it has problems with the Ethernet shield. **Q: Can this shield connect to your home network wirelessly, or do you need to plug in an ethernet cable to the board?** A: No, it's an Ethernet sheild. You need to plug it in to an Ethernet socket. They make wireless shields though. They will have antennas. Sometimes you can get two different frequency bands for better range it requires multiple antennas. **Q: is this compatable with arduino uno Rev 3?** A: I have it on a Sainsmart UNO R3 clone and it is working well. So yes, it should. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worked like a charm *by B***Y on 10 November 2015* Worked like a charm. Its hard to get proper working ones these days. Had a bad time buying duplicate stuff in ebay. ### ⭐⭐⭐⭐ Very good *by M***M on 26 October 2019* The ethernet shield is working without any issues. Packing was very good. Using for more than two months without any problem. ### ⭐⭐⭐ Ok ok *by P***R on 24 July 2025* Product is ok ok but gets 🔥 heat ## Frequently Bought Together - HiLetgo W5100 Ethernet Network Shield W5100 Ethernet Expansion Board with SD Card Slot for Arduino UNO MEGA2560 - Arduino Uno REV3 [A000066] - Arduino UNO R4 WiFi [ABX00087] - Renesas RA4M1 / ESP32-S3 - Wi-Fi, Bluetooth, USB-C, CAN, DAC, OP AMP, Qwiic Connector, 12x8 LED Matrix --- ## 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.dk/products/77492599-ethernet-w5100-shield-network-expansion-board-w-micro-sd-card](https://www.desertcart.dk/products/77492599-ethernet-w5100-shield-network-expansion-board-w-micro-sd-card) --- *Product available on Desertcart Denmark* *Store origin: DK* *Last updated: 2026-04-25*