How can i disabled the power of front charging usb port when the computer is off ?
I have try with BIOS (last version BECFL357.86A.0078) but with the bios param : Portable Device charging mode = Off, the out power keep on.
Can't check on your NUC. On NUC8i7HVK however, setting Portable Device charging mode to Off, disconnects the power from the charging USB port (yellow) in S5 power state. In order to disconnect power in S5 from all other USB ports (blue ports), the parameter USB S4/S5 Power in Power tab should be unchecked.
Lets see if some user with NUC8ixBEx may confirm your findings. If yes, the problem is in BIOS.