Panda Wireless PAU0A

Overview
"5C09 V1.3" is silkscreened on the board in the FCC photos.

The MediaTek chip model is not legible in the FCC internal photos but it is very likely a MT7610U.

The FCC entry also covers the Panda Wireless IGU0A and the Panda Wireless PGU0A which supposedly just have different colors.