The reason I ask is I purchased a USE Euro cluster and had it in my M5 for about a month. When I disconnected the battery and reconnected it the car would not start anymore due to the CODE on the Nav screen. Took it to the dealer and my tech told me that if there is a dot next to the miles, then that means that someone has tampered with the cluster (ie. removed and put a different one in, or rolled the mileage back). I then pluged my US cluster back in, and it works fine and there is NO dot, but you can see it in the background

. Well a lesson learn, don't swap clusters