Features: This product is high-expansibility main board, base on RK3506B, aiming at simplifying the hardware development process. It use welding interfaces to provide physical connection, and leading to a wealth of fast speed interfaces, including RMII Ethernet and USB interfaces, which can meet a variety of application scenario. Enables the low-speed pin to support up to 98 kind of multiplexing functions, such as UART, I2C and 12S, and realizes combination and flexible configuration of interfaces, greatly improving the development and debugging efficiency. Developers can quickly scheme or directly use it in mass production, which significantly shortens the research and development cycle. In addition, whether the eMMC is on board can be selected to meet different storage needs. Specifications: Component:Plastic Type:No Flash/8GB Flash Size:Approx.32x32mm/1.26x1.26inch Package Includes: 1Pc RK3506B main Board note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.