Yes. However, this is only possible with an ESP32-based controller and additional hardware. Then you can activate Ethernet under "Config->WiFi Setup" by selecting the Ethernet controller type or adapter type: ABC! WLED V43 & compatible, ESP32-POE, ESP32Deux, KIT-VE etc. The WLED version used must have been compiled with Ethernet support. Please note: ESP32-S3 based boards with a W5500 Ethernet IC are not supported and most likely will not be supported in near future.