BMW 2010 M3 Owner's Manual page 172

device supports this. Therefore, do not con-
nect the device to the power socket in the
vehicle.
> Do not forcibly connect the plug to the USB
interface.
> Do not connect devices such as fans or
lamps to the USB audio interface.
> Do not connect USB hard drives.
> Do not use the USB audio interface to
charge external devices.
170
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