Use the SD and SDXC card slot on your Mac

Yes The purpose of the micro SD slot is data storage The data transfer rates are too less when compared to a regular USB drive and u will find

In today's video, I will be teaching you how to insert a MicroSD card into any laptop or computer

microsd slot A microSD card is a miniature variation of the SD card used in small portable electronics, like smartphones

slot loevenstein microSD card slot for main storage; 40-pin expansion header; Micro-USB port for 5V power input, or for Device Mode; Gigabit Ethernet port USB ports