C’est pas du tout le but de la v2,
en fait ils ont ajouté la possibilité d’alimenter le RPi via les output USB :
USB Output PowerThe resetable fuses protecting the USB outputs have been removed. This feature was implemented on some later revision 1.0 PCBs by replacing the fuses with links; revision 2.0 permanently implements this modification. It is now possible to reliably power the RPI from a USB hub that back feeds power, but it is important that the chosen hub cannot supply more than 2.5A under fault conditions.
