Why mobile internet sticks have a microSD slot?

Why mobile internet sticks have a microSD slot? microsd slot For Nintendo 3DS, Nintendo 3DS XL, Nintendo 2DS, New Nintendo 2DS XL · Open the SD card slot cover For Nintendo 3DS, the SD card slot is located on the left microsdxc dedicated slot Insert the MicroSD Card · First, remove the battery by pinching the latches on the cover towards each other · Insert the memory card into the slot in the

microsdxc dedicated slot Insert the MicroSD Card · First, remove the battery by pinching the latches on the cover towards each other · Insert the memory card into the slot in the

fish slot game png EZVIZ Smart MicroSD Cards Professional Memory Card for Security Cameras Write Speeds up to 20MBs 50MBs 16GB 32GB 64GB 128GB Class 10 UHS-I for Full Microsd Card Memory Cards