2560 and Ramps 1.4 are integrated in the board, which avoids the problem of complicated connectors and malfunctioning. Reserve external driver signal, available to connect external high-current driver to drive the 57 and 86 stepper motors. Support a variety of stepper drivers such as A4988, DRV8825, TMC2100, available to change the stepper drivers and motors as users like. Use specific power chip, support 12V-24V power input, and resolve the problems of chip heating and power shortage. Use high-quality MOSFET, better cooling effect and more stable. Use CH340 serial port chip, more easily install than 16U2. Stable and reliable filter circuit greatly reduces interference and avoids crashes as possible in the process of printing. Support 24V input, the heated bed current can be reduced to 1/4 at the same system power which effectively resolves the problem that the MOSFET of heated bed heats. Run firmware, the configuration is completely same as Ramps 1.4, and available to directly replace the Ramps 1.4. Support Ramps 1.4, 2004LCD,12864LCD, TFT28 and TFT32. Plug the stepper drivers according to the different color terminals which decreases the probability of reverse and prevents the controller board damage. colour:As shown Material:PCB size:110 x 23mm Package Contents: 1 x Mainboard Only the above package content, other products are not included. Note: Light 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.