Features: Using CH340 serial- chip to ensure the stable and reliable premise, reduce the cost, and to solve the problem of the previous 16U2 hard drive. Using the open source firmware- for Marlin, the configuration is exactly the same as for ramps1.4, and can replace for Ramps1.4 directly. Integrate 2560 and ramps1.4 are intergrated on a piece of board, which solves the problem of complicated and easy failure for Ramps1.4 composite interface.Users can change their own motor drive support A4988/TMC2209/TMC2208/TMC5160/DRV8825 stepper- drivers- 24V input can be accepted, and the same system power can reduce the hot bed current to 1/4, effectively solving- the hot bed MOS tube heating problem. It can be directly connected- to 2004 LCD display and 12864 LCD display, and can be supported by TFT28 /TFT32/TFT35/TFT50/TFT70 touch-screen. Specifications: Product : DIY motherboard MKS GenL V2.1 for 3D Printer Material: PCB-Board Support :A4988/TMC2209/TMC2208/TMC5160/DRV8825 stepper-drivers Chipset: CH340 Serial- chip Using the open source firmware- for Marlin Size：Mixed Support Power Input: 24V Package Includes: 1 PC x MKS Gen-L V2.1 Main Board 1 PC x USB Cable 1 PC x Manual note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.