i’m pretty sure it has to be turned on since once in a while i use the usb to charge my ipod and i have to keep the wii on
For any device, if the power isn’t on, its USB ports are not putting out power to whatever’s connected to it.
I have that problem with I have my iPod connected to my laptop and it goes into sleep mode. If I leave my iPod on overnight and this happens, I wake up to a sleeping lapto and a power-drained iPod
yeah it has to be, i recently purchsed the WiiMote charger and i left it plugged in for 3 hours and it hadnt charged, it really ticked me off, its the same for the WiiFit Board but you may aswell keep that plugged in, when your playin it