CHENYANG Low Profile Short Body TF T-Flash Micro SD Memory Card to SD Card Socket Adapter Black for Extra Storage Mac Laptop 

Color: Black ,Card Kit Length: 20mm approximately;Completely hidden and fits snugly into your Mac,Simple & Easy to add (up to 512GB) extra storage space.

Work with UHS-I microSD cards. Compatible with the full range of TF cards (including SDHC) from 128MB to 512GB, meeting diverse storage capacity needs. 

This Micro SD card,also called TF card，can realize quick information recognition without any read speed changed.Just depends on it to make information exchange easily.

You can extend the TF card from SD socket and use the TF card; Support Micro SD / Micro SDHC / Micro SDXC; (The memory card not included)

Short Body Low Profile SD card kit for Laptop and MAC (Please Check the card socket dimension when you use the card)

Up to 100MB/s read and 30MB/s write. Record smooth UHD video and transfer 1000 photos in ~30s. No stuttering/buffering for lag-free shooting and instant file sharing.

Work for:

MAC Pro 13": Mid 2009, 2010, 2011, 2012, 2013, 2014

MAC Pro 15": Mid 2009, 2010, 2011, 2012, 2013, 2014

MAC Pro 17": Mid 2012, 2013, 2014

MAC Air 13": Late 2010, 2011, 2012, 2013, 2014

MAC Retina 15": Mid 2012

Note: The SD card cannot plug in fully for Belowing macbook:

MAC Retina 15": 2013 or later ==to will be out of 3-5mm

MAC Retina 13": Mid 2012, 2013, 2014 ==to will be out of 3-5mm