MacBook Mini Drive Storage, GMYLE Mircro SD (TF) Flash Memory Card Adapter Expansion to SD Slot for MacBook Pro 13/15 (Not Fit for MacBook Pro with Retina Display) 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 256GB Micro SDHC (TF Card) (memory Card not included), and integrate with your MacBook's native Time Machine. Compatible with Macbook Pro 13/15 (Not Fit For Macbook Pro with Retina Display and Macbook Air). 24 Months Worry-free warranty backed by GMYLE.