The board with the TB6560 is a motor controller. It works by providing a digital pulse of work and direction. We can use the board to control a step motor like the NEMA 17 
Tb6560 CNC Router 1 Axis Controller Motor Stepper Driver 3A :
Minimum operating voltage: 10 V
Maximum operating voltage: 35 V (24V recommended)
Maximum current: ± 3 A
Stepper motor · two phases · four phases
Microstep resolution: full, 1/2, 1/8, and 1/16
PCB measurements: 75x50 mm
CNC Router 1 Axis Controller Stepper Motor Drivers TB6560 3A driver board
Dc operating voltage 10V-35V. Recommended for using a switching power supply DC24V power supply
6N137 high-speed optical coupling ensures high speed without losing steps
Using the TB6560AHQ chip with low voltage shutdown, overheating stop and overcurrent
Protection circuit to ensure optimal performance
Nominal maximum output: 3 A, peak 3.5A
For two phases within 42.57 staggering 3A / four phases / line four / six wire stepper motor, and not suitable for more than 3A stepper motor
Half-stream automatic function
Subdivision: full step, half step, step 1/8, 1/16 step, a maximum of 16 subdivisions