WIZnet W5500 Ethernet Shield is designed using the w5500 chip. It supports 3.3V and 5V and is compatible with Arduino and ARM mbed platforms.
Features Suppport 3.3V/5V High Speed Ethernet controller W5500 chip SPI interface Internal 32Kbytes Tx/Rx buffer 10/100 Ethernet PHY embedded Support Auto Negotiation (Full / Half duplex, 10-/100-based) Hardwired TCP/IP Protocols: TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE User Selectable GPIO pin Support SD-card slot for storage Support I2C, UART interface
Hardware Configuration RJ-45 with Transformer: Ethernet Port W5500: a hardwired TCP/IP Ethernet Controller RESET: Reset Ethernet shield and Arduino when pressed SD-Slot: support Micro SD card in FAT16 or FAT32; (Please Read the Caution) I2C: I2C interface UART : UART interface