I want to upgrade from a Chinese TB6560 board to a Leadshine MX4660. I have 3 Nema 23 270oz 3A stepper motors and a 350 watt 24VDC power supply. Will the power supply be sufficient for the upgrade?...also my motors do not have any connectors on them...how do the motors get wired into the MX4660...is there a connector needed? Thanks in advance.