This version is in the original version optimization, mainly for foreign customers on the product quality and functional requirements of the high-design case, both to ensure that the original and fully compatible with the same, but also easy to use. Advantages: 1 completely solve the traditional UNO board win7 and win8 system is not compatible with the above instability. Especially on a pirated 64-bit WIN7 system, the official motherboard cannot be installed the driver, and this version is very simple and easy to install. 2. Increase pin socket, easy to use DuPont line. 3. Replace 16u2 to make the cost cut in half, consumers get the most benefits Download program simple and convenient. You can simply use the sensor, various connected electronic components (such as: LEDs, buzzers, buttons, photoresistors, etc.) to do all the interesting work. The use of high-speed microprocessor controller (ATMEGA328), interface development