Confused by 2 Micro SD card slots

The device has a standard memory slot that enables you to extend the built-in internal storage with affordable memory

This card worked perfectly in the RC controller for my Mini 3 card is recognised in the drone and the 128gb card in the drone (Sandisk

dji mini 3 pro memory card slot How to remove SD card DJI Mini 3 Pro Remove your gimbal guard and use the end to push and

dji mini 3 sd card slot While the microSD card slot in the DJI RC is used to preview copies of the photos and videos that you have captured using your DJI Mini 3 Pro