An adapter is required for early model N1/N2 printers that have silver colored stepper motor in order to connect the new Bondtech SingleDirect Extruder. This is because older model Raise3D N1/N2 printers with the silver color motor have a stepper motor connection that does not fit the motors on the SingleDirect Extruder. This adapter fits onto the factory extruder stepper motor cable and then plugs into the motors of the SingleDirect Extruder. The kit includes one adapter cable. The cable adapter have the phase shifted on one of the stepper motor coils. This phase shift is in order to change the rotation direction of that motor and is necessary in order for the extruder to feed filament in the correct direction.