Features: Suitable for professional developers to carry out project prototype design, which solves the compatibility problem of traditional. Users can complete the assembly in a few minutes, which is suitable for teaching demonstration and rapid experimental verification. chip is adopted to provide stability. It is suitable for intelligent equipment projects that need to run for long time, and solves the problem of system instability chip. Small and light design, easy to carry and store. Suitable for mobile office or outdoor scientific and technological activity, and meet the needs of creative development anywhere. Equipped with USB cable, convenient for programming and power supply. Specifications: Type:With Cable/Without Cable Size: Approx.4.3x1.8cm/1.69x0.71inch Package Includes: 1Pc motherboard 1Pc USB data cable 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.