Ethernet W5100 shield

This shield allows an Arduino to Establish a wired Ethernet connection to a network and is compatible with Uno, Mega and boards with compatible I/O pins.


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Arduino UNO R3 ATmega328P CH340G Mini USB Port
Pro Mini 328 3.3v
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10 + 8%
SKU: OKY2101
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W5100 shield is a full-featured, single-chip Internet-enabled 10/100 Ethernet controller designed for embedded applications where ease of integration, stability, performance, area, and system cost control are required. The W5100 has been designed to facilitate the easy implementation of Internet connectivity without OS. The W5100 is IEEE 802.3 10BASE-T and 802.3u 100BASE-TX compliant

Specifications: WIZnet W5100 Ethernet Controller


  • Compatible with both Uno and Mega footprints
  • Standard RJ-45 CAT network connector
  • Auto MDI/MDIX (auto cable pin swap)
  • Acts as client or server
  • TCP/IP protocols include TCP, UDP, ICMP, IPv4 ARP, IGMP, Ethernet
  • 10BaseT/100BaseTX Ethernet PHY embedded
  • Up to 4 simultaneous socket connections
  • MicroSD card slot
  • SPI Interface
  • 5V compatible operates at 3.3V internally
Package includes: Ethernet Shield W5100 Arduino

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Weight 0.030 kg
Dimensions 7 × 6 × 2 cm

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SKU Product Type Download/View
OKY2101 Ethernet W5100 shield - W5100 Data Sheet Document Download

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