Chosen Solution
This piece fell out of my Nintendo switch as I was taking off the metal plate from the back of the Switch. It didn’t immediately fell out as I was lifting the plate, I had tilted the system after removing the plate and I heard a clatter once this piece fell out. Here are the pictures with a microSD for scale.
That part goes on the game card reader board on top of the headphone jack after the board is installed before the headphone jack screws are screwed in.
