The SD card reader on your Mac enables you to transfer files to your Mac's hard drive directly from SD external stornage devices. SD cards are compact storage devices that are commonly used in portable media devices and smartphones due to their small size and significant storage capacity. Inserting this type of card in your Mac enables you to copy files to and from the card's storage.
Locate the SD card reader slot on the left side of your Mac's body.
Align the card with the slot. Make sure the metal edges of the card are facing down.
Push the card gently into the card reader slot. The SD card appears as a "Removable Disk" on your Mac's desktop.
How Do I Transfer an SD Card to another SD Card?
Secure digital (SD) cards are flash memory cards that hold up to 2 gigabytes (GB) of information; the new SDHC (SD high-capacity)...