As Trips said, it is quite obvious when you look at it - it sits as a backpack on the BV9. If in doubt ask your dealer, some of them were not aware of the fact that initially you had to deactivate the PIN code before uploading new S/W to the BS3 box - and it freezed. Only solution was to hook off the BS3 box and return it to B&O (or a skilled tech support center).
Roger