Features: Brand new and high quality Powerful functions: MKS 3D printing motherboard has powerful functions, which can meet the needs of users for printer control and expansion. UART communication interfaces: The motherboards adopts UART communication interfaces, which provides a more stable and reliable transmission rate, ensures the accuracy of signals in the printing process, and makes the whole printing process smoother. Replaceable: This motherboards can replace the existing motherboards, providing users with a more efficient and reliable printing experience. Rich interfaces: MKS motherboards has multiple interfaces, including UART, extended GPIO, etc. Users can easily connect and control other devices or modules to achieve functions. Powerful processing ability: The motherboards adopts advanced processor, which has high computing speed and response ability, and can process and transmit 3D printing tasks faster and improve printing efficiency. Specifications: Material:PCB Type:A/B Size:Approx.110x84mm/4.33x3.31inch Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set Main Board