MacBook Mini Drive Storage, GMYLE Mircro SD (TF) Flash Memory Card Adapter Expansion to SD Slot for MacBook Air 13/MacBook Pro 13 15 Plug and play adapter, adding storage space to your Macbook by 1 Step with the Mini Drive. Seamless design, Weighs next-to-nothing, fits snugly into your MacBook's Flash SD card slot invisible once plugged in. Support up to 128GB Micro SDHC (TF Card) (memory Card not included). Compatible with Macbook Pro 13 15, Macbook Air 13 (Not fit with Macbook Pro Retina). 24 Months Worry-free warranty backed by GMYLE.