The MacBook Pro comes with a built-in SD card reader, so you can insert compatible SD cards and view their contents using the Media Reader. The cards must conform to SD 1.x, 2.x, and 3.x standards.

The SD card reader slot on the new 14 and 16-inch MacBook Pro models is not functioning as expected with some SD cards, according to multiple reports on the MacRumors forums. Same issues with 14 ...

Users can take advantage of the SD card slot for additional storage space, with UHS-II-compliant SD cards available in capacities such as 64GB, 128GB, and 256GB.