There was an obvious error on the keyboard, a second M key replacing the B key.
Long time Mac users will remember that a similar defect was although spotted in the past, with swapped key or blanked ones:
Of course, this defect does not have any consequences, and the MacBook will be exchanged without any problem. As Apple does not offer single key for correcting such problem, the entire top part has to be exchanged.
According to our sources, the number of defects reported on the new MacBook models is particularly low.
