And it doesn't happen all the time. I have 2 MBPs (one is 7 years old, the other is brand new) and with both I have felt the "buzz"... But not every time. I can

And it doesn't happen all the time. I have 2 MBPs (one is 7 years old, the other is brand new) and with both I have felt the "buzz"... But not every time. I cannot tell under what circumstances it happens. I have never used chargers/cables other than the Apple ones.