IMPILABILE/CONFIGURABILE IO ARDUINO UNO SHIELD LCD 1602 CON QUADRANTE REGOLAZIONE LUMINOSITÀ

On the official Arduino UNO R4 Wifi board, the power barrel is too far in than the Arduino UNO R3 board. This causes the shield to touch the end edge of the Arduino UNO R4 Wifi power barrel. The LCD I/O pins are jumpered to the below Arduino UNO I/O pins by default.

eBay