[pierrelux]

Thanks for your answer. But I think that my Arduino Nano is out of service.
When I connect an Arduino UNO, I can connect without problem on Com Port 11, the FTDI driver is installed, but when I connect Receiver board with the Arduino Nano impossible to connect to a Com Port, on Arduino Ide the serial port is greyed.
I will order a new Adrduino Nano V. with a ftdi chip.
By the way the Arduino Nano for the PRO2 boards are also Arduino Nano V.3 with fdti chip or can I use also Arduino Nano V.3 with CH340G Module.
Regards and thanks.
Pierre