W5100 Ethernet Shield for Arduino UNO Mega 2560 R3 Ethernet LAN Micro SD

Description �� W5100 Ethernet Shield for Arduino UNO / Mega – Ethernet Micro SD | AuscomTech The W5100 Ethernet Shield is an Arduino-compatible networking expansion board designed to add wired Ethernet connectivity to Arduino UNO and Mega platforms.Built around the reliable Wiznet W5100 Ethernet controller, this shield enables Arduino boards to operate as web servers, network clients, data loggers, or IoT devices using standard TCP/IP protocols. The shield uses a stackable UNO-style form factor, allowing it to plug directly onto compatible Arduino boards with no additional wiring. A built-in RJ45 Ethernet port and Micro SD card slot provide both network connectivity and local storage for web pages, configuration files, or logged data. ⭐ Key Features �� W5100 Ethernet ControllerHardware-based TCP/IP stack reduces MCU load and simplifies networking. �� 10/100 Mbps Ethernet (RJ45)Reliable wired networking for Arduino projects and LAN-based systems. �� Micro SD Card SlotStore web content, configuration files, or log sensor data locally. �� Stackable Shield DesignPlugs directly into Arduino UNO-style headers. ⚡ 5V OperationPowered directly from the host Arduino board. �� SPI InterfaceCommunicates with the Arduino via SPI for fast and stable data transfer. �� Multi-Socket SupportSupports up to 4 simultaneous TCP/UDP connections (W5100 capability). �� Technical Specifications Core Ethernet Controller: Wiznet W5100 Internal Buffer: 16 KB Supported Protocols: TCP, UDP, ICMP, ARP Networking Ethernet Speed: 10 / 100 Mbps Connector: RJ45 (Ethernet cable not included) Storage Micro SD / TF Card Slot (SPI-based) Electrical Operating Voltage: 5V (from Arduino host) Logic Level: 5V Interface Communication: SPI Shield Form Factor: Arduino UNO R3 style Compatibility Arduino UNO R3 Arduino Mega 2560 Arduino Mega 1280 ATmega328-based boards �� Typical Applications • Arduino web servers• IoT and LAN-connected devices• Home automation controllers• Data logging with SD storage• Industrial and educational networking projects• Remote monitoring systems ⚠️ Important Notes • Arduino board not included• Ethernet cable not included• Uses SPI — ensure no SPI pin conflicts with other shields• Suitable for wired Ethernet applications (not Wi-Fi) �� Package Includes • 1 × W5100 Arduino-Compatible Ethernet Shield• Micro SD card slot onboard (card not included)