If you’re looking to build a network-connected device with Arduino Nano is the best solution for you!
Ethernet Shield W5500 features the Ethernet controller based on WizNet W5500 TCP/IP. WizNet W5500 is a TCP/IP embedded Ethernet controller. It provides TCP/IP Stack, 10BaseT/100BaseTX Ethernet with full or half-duplex, MAC and PHY. W5500 is using a highly efficient SPI protocol, with 80MHz clocks for high-speed connectivity to Arduino Nano. For lower energy consumption, W5500 provides WOL (Wake on LAN) and Power Off modes.
Arduino library: Ethernet.h/Ethernet2.h/ Ethernet3.h
Source : https://robotdyn.com/nano-v3-ethernet-shield-w5500-v2.html
Author : firstname.lastname@example.org