AT59 Offline Controller 32-Bit 4 Axis Control Board GRBL Control Optical Coupling with 300W/500W Spindle for CNC Engraver B This control board is a 32-bit MCU control board, which runs faster, the maximum no-load speed reaches 40000mm/min, the algorithm is optimized better, the vibration of the machine is smaller when the machine moves at high speed, and the performance is more stable;_x000D_ Using the Type-C USB interface, it is more convenient to use and the data transmission is more stable;_x000D_ Support external drive, the reserved interface for external drive is consistent with the high-power drives on the market, which is convenient for wiring;_x000D_ The control board power supply and line number circuit are isolated by optocoupler, the whole control board is safer and more stable;_x000D_ Y-axis dual drive, stronger drive capability;Support USB automatic identification. When plugged in USB and connected to the computer, it will automatically shield the offline interface to avoid offline interference with data. At the same time, it supports external buttons, which can switch offline/USB control with one key;_x000D_ _x000D_ There are long strip-shaped mounting holes on the shell, which is convenient for the installation of various devices;Reserve 24V, 12V, 5V power output ports to facilitate the expansion of various functions;_x000D_ Support USB flash firmware, firmware upgrade is more convenient_x000D_ Product Parameters:_x000D_ Product Name:4 Axis 3.0_x000D_ Product Specifications:4 Axis_x000D_ Product Size:122mm x 87mm_x000D_ Product Weight:150g_x000D_ Operating System:Window/Linux/Mac_x000D_ Interface Type:TypeC_x000D_ Supply Voltage:DC24V- 5A_x000D_ Style:B_x000D_ Colour:As shown_x000D_ Material:Metal_x000D_ _x000D_ Package Contents:_x000D_ 1 * 4 Axis 3.0 Control Board_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_