TOPCHANCES 4 Axis USB TB6560 2 phase Stepper Motor Driver Board+Remote Controller Nema23 This USB6560T4 is a new 4 axis TB6560 CNC control board with USB input, suitable for controlling max.3A 2 phase stepper motor. USB CNC 4 Axis TB6560 3.0A 15KHZ Stepper Motor USB Driver Board TB6560 Controller It's easy to operate for CNC DIY, but as it's controlled by USB port, users need more careful with the software install.