SPI to Ethernet Hardware TCP/IP W5500 Ethernet Network Module 

100% New W5500 Module SPI Interface Ethernet Module TCP/IP 51/STM32 SPI Interface Compatible

Supports both 3.3V & 5V.

Hardwired TCP/IP Protocols : TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE

10BaseT/100BaseTX Ethernet PHY embedded

Supports automatic response (full duplex / half duplex mode)

Supports 8 independent sockets simultaneously