This adapter allows you to mount the RigidBot Extruder PCB at a 90 degree offset from the OEM design.  This places the ribbon cable in an orientation that allows flexing along the axis of motion in a manner preferred by flat cable, as opposed to torquing the IDC connector.Installation.  The adapter prints "upside down" on your build platform.  The intent is for the cylinders to be below the PCB, which places the cutouts aligned with the pins below the PCB, and the Thermistor connector as close to the heatsink as possible.  The PCB mounting holes are 3mm in diameter and will hopefully self tap with the M3 screws from the kit (because printers typically undersize the inner diameter).  The adapter mounting holes are 3.35mm in diameter and should allow the M3 to pass through and engage the threaded inserts in the extruder body.