Arduino Ethernet Shield W5100 — SD Card Slot, RJ45

Arduino Ethernet Shield W5100 — SD Card Slot, RJ45

The Arduino Ethernet Shield W5100 adds wired 10/100Mbps Ethernet and a Micro SD card slot to any Arduino Uno or Mega. Built around the WIZnet W5100 chip with hardwired TCP/IP stack, it stacks directly onto the Arduino and is fully supported by the Arduino Ethernet library. The SD card slot allows data logging and file serving over the network.

Key Specifications

• Chip: WIZnet W5100 | Speed: 10/100Mbps
• Interface: SPI | Sockets: 4 independent
• Protocols: TCP / UDP / ICMP / IPv4 / ARP (hardwired)
• SD card: Micro SD slot (SPI, FAT16/FAT32)
• Connector: RJ45 with integrated magnetics and LEDs
• Compatible: Arduino Uno / Mega / Leonardo
• Compliance: RoHS compliant

Why Choose This?

• ✅ Direct Arduino shield stack — no wiring needed, plug onto Arduino Uno/Mega
• ✅ Arduino Ethernet library compatible — extensive tutorials and community support
• ✅ Micro SD card slot — log data to SD and serve files over Ethernet
• ✅ Hardwired TCP/IP — minimal MCU overhead for network processing

Typical Applications

• Arduino wired Ethernet web server and IoT projects
• Network-connected data logging with SD card storage
• Industrial Ethernet sensor and control nodes
• Home automation with reliable wired network connection

Enjoy free standard shipping on all orders over $199 USD. Orders are processed within 1–2 business days.

Not satisfied? Return any item within 90 days of purchase for a full refund or exchange. Items must be in original condition.

We are committed to quality, reliability, and customer satisfaction. Every product is carefully selected and tested to meet the highest standards.