High quality brand new Four operating modesTCP CLIENT, TCP SERVER, UDP CLIENT, UDP SERVER. Network parameter configuration like chip operating mode, port, IP, via host computer software or UART command.Control interfaceUART to Ethernet Supports host boards Like for Raspberry Pi/Arduino/STM32..., Supports DHCP auto-obtained IP and DNS domain accessDevelopment resources and manualComes with development resources and manual (examples for Pico/Raspberry Pi/Arduino/STM32)2-CH UART concurrent operation2-CH UART concurrent operation, standalone transparent transmission for each channel. Full-duplex or half-duplex UART communication, supports RS485 RX/TX auto switchAuto-MDI/MDIXThe Ethernet serial server converter supports Auto-MDI/MDIX to automatically detect and switch cable types. Embedded Ethernet MAC and PHY layers