WeMos D1 Mini Pro WIFI Development Board 16MB
4M bytes(128M bit) Flash
External antenna connector
Built-in ceramic antenna
New CP2104 USB-TO-UART IC
Same size as D1 mini, but more light

4M bytes(128M bit) Flash
External antenna connector
Built-in ceramic antenna
New CP2104 USB-TO-UART IC
Same size as D1 mini, but more light