Features: Fits for Anet A8 3D printer, easy to connect and operate. Highly integrated one board, to solve the Ramps1.4 combination interface cumbersome problem. Optimized layout routing and thermal design, the whole board performance is more stable. 12V power supply input, with USB connection. Adopted for MOS with high-perforamnce as driver, great heat dissipation effect. Large USB, more stable connection, more concise interface, wiring more convenient, more stable, longer life. On-board 4-channel A4988 16-step stepping motor driver ( Z-Axis motor interface ). Description: PWM DC 3 outputs ( 1 channel high current, 3 channel medium current, 2 channel small current ). ST original power supply chip, support 12V - 24V power input to solve the Ramps voltage conversion chip fever problem. Can accept 24V input, the same system power can be reduced to 1/4 of the hot bed current, solve the hot-bed MOS tube heating problem effectively. Can use open source firmware Marlin, configuration and Ramps1.4 exactly the same, can directly replace Ramps1.4. Support the connection for Ramps1.4, 2004 LCD and 12864 LCD control boards. Specification: Model: V1.0 Board color: red Size: 111*95*23mm/4.37*3.74*0.91 inch Voltage input: 12V Package included: 1 x 3D Printer Motherboard