W5100S MKR-Ethernet shield is designed using the WIZnet W5100S chip. Please click the link for the further information about W5100S. It supports both 3.3V & 5V. This Ethernet Shield is compatible with Arduino MKR Platform. The W5100S MKR-Ethernet shield is compatible with the Arduino Ethernet Shield (W5100).
Operation Voltage DC5V or DC3.3V
Signals (SPI) Voltage 3.3V
Included W5100S of WIZnet
W5100S is software compatible with the W5100.
Compatible with the official Arduino Ethernet shield (Default)
Compatible with the official Arduino Ethernet Shield 2 at user choice (Optional)