How fast can my Mac read or write to an SD card in the SD card slot? You can use Disk Utility to partition and format an SD device as FAT32 MacBook Pro models from and later don't have a built-in SD card slot. When the hard drive on your MacBook is getting full, you have a few options: You pop it into your Mac's SD card slot, install some software and you're set. TarDisk is available for the MacBook Air, MacBook Pro with Retina. storage to your MacBook Air or Retina Pro through the SD card slot These expansion drives are nearly as convenient as on-board storage.