Can someone identify this component Please... A6 A

JBL Flip 2

A standard charging port replacement went south when the centre screw removed this component from the main board.

Its designation is D9 on the board and printed with A6 A, I believe its a Diode but not sure what other properties it has.

my knowledge on components is that of a three year old monkey.. I can replace and solder, but how or why it works is beyond me.. some sort of magic I presume..

Its situated next to the centre screw hole on the main board, and without this the unit wont turn on or charge unless you hold the power button down, when you release it, the speaker turns off with a loud pop..

Any help on this would be much appreciated..

Many Thanks

Paul