Mach3 usb 3axis cnc kit tb6560 stepper motor driver board+nema23 stepper motor57 maximum step-pulse frequency is 100khz, which is suitable for the servo or stepping motor. Support for 3-axis linkage, you can connect four stepper motor drives or servo drives. MACH3 USB 3-Axis CNC Kit TB6560 Stepper Motor Driver Board + 3pcs Nema23 Stepper Motor57+1pc Power Package Content 3 x Nema 23 Stepper Motors 57 1 x USB MACH3 CNC 3 axis TB6560 Stepper Motor Driver Board 1 x Power 1 x USB cable 1 x CD Motor Controller USB mach3 CNC 3 axis TB6560 Stepper Motor Driver Board Motor type Stepper Motor Model Number mach3 USB 3 axis Frequency 100KHZ Features 1.