I am still searching for a solution to conveniently power some external hard drivers.
I would like to use only one AC plug as I think it is not very efficient to use two different PSUs.
My idea is to split the cable from a 2.6A power supply. (actually I did not find a 2.7A one)
AC mains -> 5V 2,6A PSU --> USB micro plug -> Raspberry Pi (Model B) \ | USB data \--> round DC plug -> powered USB Hub
So this is more an electrical engineering question: Is it okay to connect the 2.6A input to raspberry Pi and to the USB hub parallely? Could there any overloading happen?