w5500 pinout note you need to connect reset pin as well https://github.com/PaulStoffregen/Ethernet/blob/master/README.md https://esp8266hints.wordpress.com/2019/04/05/esp32-w5500-simple-working-example/ https://github.com/PuceBaboon/ESP32_W5500_NTP_CLIENT {{:arduino:pasted:20201016-161818.png}} {{:arduino:pasted:20201016-164332.png}} we get speed or W5500: 606148.3948947026b/s with 1k packets or 620,261 b/s with 2k packets C:\OneDrive - Vilnius University\python\test_esp32_mysql\esp32_udp_audio\multicast_udp_test_05_unicast_speed_test.pyw C:\OneDrive - Vilnius University\arduino2\esp32_ethernet_w5500_speed_test\esp32_ethernet_w5500_speed_test.ino