The 5th axis upgrade for the BladeRunner AIO adds a full G251 motor driver with isolated inputs and the same protection as the drives on the main EZPlug G251-4 module, plus a 980 oz in motor wired for the G251 driver. 40% more torque. With 15 ft cable at an affordable price. The motor and drive are tested together before shipping. Note the 980 0z-in is a larger 34 frame motor with a 1/2″ diameter shaft.