Solu &reg; Mini Nano V3.0 Atmega328 Board for Arduino IDE (Arduino-compatible) + Free USB Cable (Cheap, Not for Beginners, Replace the 16u2 (Usb Chip),you Need to Download the USB Driver From Our Web Site, but Worth to Try ) Can be used in win 7 and win 8 Please note that Replace the 16u2(usb chip), make the cost reduced to half, consumers obtain maximum benefits This version is in the original version of optimization, both guarantee and the original same compatible, and convenient use. We produce this board based on the open-source arduino official schematics.The printing or color on the board may be different from each production date, but the function is exactly the same. About us (Solu ), Professional factory of circuit boards for Arduino, welcome to our store for more choices with best price. What we pursue is your satisfication of our service, not just for our goods.For any reason you are unsatisfied with our product at any time, simply contact support for exchange or refund. we will reply you about any question you ask within 24 hours