You should never need this, but if you do, it's a replacement Carbide Motion PCB for Shapeoko.
It includes:
- Atmel 328 running GRBL
- 4 Stepper Drivers (X, Z, and double Y drives)
- USB Interface
Comes in two options:
- Stand-Alone CM Board (The heatsink and power supply are not included, this is only the PCB.)
- CM Board with Enclosure (Choose this option if you are replacing a 2.4C board or earlier)