Mainboard only CPU, stepper driver not included, driver can be found here 
 
Design for replacing the stock cetus mainboard MK1 2 and 3.
For use with Pololu style stepper driver, Please insert the driver in the correct orientation. Switch off power before insertion.
 
Supporting pololu style stepper driver (a pair of motor wire need to cross over depends on the driver install to make the direction correct) stock Cpu stock MK1/2, MK3 Heatbed, stock Zprobe tinyFab Cpu tinyFab Heatbed (10pin or 12pin FFC) pin out for BL touch Mounting bracket for MK1/2 https://www.thingiverse.com/thing:3953664 Schematic https://drive.google.com/file/d/1SXyITnxnG_tu01X4t8EoFe7OVmGHm3kL/view?usp=drivesdk