M28 Chip Identification

Looking for help identifying a chip on a switch lite. Main board is HDH-CPU-02.

The chip markings are “M28” and “9K”.

Some googling suggests its a MOSFET but I am very unfamiliar with this chip so I wouldn’t even know if this is a good starting point to find a replacement.

Any help is appreciated and thanks for looking.

Chip Location:

Top Image:


Bottom Image: