???It is always recommended to connect the MicroUSB Power to the unit last (while most connections can be made live, it is best practice to connect items such as displays and other connections with the power turned off). +Il est fortement recommand?? de brancher le cable MicroUSB alimentant le RPi en dernier.( Bien que la majorit?? des connections peuvent ??tre faite ?? chaud, il est pr??f??rable