15.4" Retina MacBook Pro (Mid 2012): Broken metal pieces from connector on the motherboard Yesterday I was replacing the housing on my 15.4" Retina MacBook Pro (Mid 2012) (A1398). When I was removing the Logic-board, I broke this little metal parts from one connector. I don't actually know what is that connector for (MagSafe 2 charging port maybe?). Is it important? Is that maybe grounding/earthing? Should I be worried about that and fix it?

MacBook is Working normally but it seems to me that it has some static electrical charge right now. I was reading little bit about that - and it says on forums that electrical charge may appear once the laptop is disassembled.
If it is the connector for the part you have circled in red in the left picture on the bottom row, that is a microphone assembly, containing two microphones. So if i understand you correctly in that the connector where the flat cable contact for this assembly slides into, on the motherboard, partially broke, you will now probably not get any mic input registered on your Mac, although I am uncertain if this model also has a mic in the lid next to the camera.