Upgrade and replace your Gran Board 3s PCB Unit with this high-quality replacement part. Designed specifically for Gran Board 3s models with a USB-C type connection, this PCB Unit ensures seamless compatibility and optimal performance. If you have an early model Gran Board 3s with a Micro USB type connection, a simple modification of widening the connection port opening on the outer plastic wall with a small file is recommended to make it compatible with this PCB Unit. Keep your Gran Board 3s up and running smoothly with this reliable replacement PCB Unit.