The Nano does what it should, but the LEDs used are all the same color, very bright and so the Nano consumes slightly more power than it should. In addition, the USB-chip of FTDI one of the alleged "fake", which promptly leads the current FTDI drivers under Windows that the Nano is no longer accessible. The last working version is 2.10. On the topic is available from the network strongly criticized the manufacturer FTDI. And of course, solutions, search Unbrick Arduino FTDI ([...]