MacBook Pro vibrating when charging
Hi guys!
I have noticed that my MacBook Pro slightly vibrates when it is charging. I have read in several forums that this is due to grounding. So the solution would be using the extension cord which has a grounding plug. So far so good. The thing is that the extension cord is not even delivered with the new MacBook's anymore. My questions are:
1.) Is this vibration harmful for the Mac?
2.) Is this vibration harmful for me?
Thank you guys!
Best wishes!
MacBook Pro with Retina display, OS X Yosemite (10.10.2)