Fortune Telling Collection - Free divination - What does the golden round sticker on the TF card mean?

What does the golden round sticker on the TF card mean?

Protective switch.

This is the write protection switch of the memory card. SD card has its own write protection switch. Turn this switch down to the end when necessary, and SD will become read-only, which can prevent the card from being written. When you need to write, press the switch to the original position, you can touch write protection and write files at will.