A good idea, which can expand the memory MacBook Airs quickly and easily. I bought a 64GB card about which has replaced the supplied 4GB card. Here it should be mentioned that the new SD card almost did not fit into the adapter, as it has on the lower side a (very small) increase. I then still get plugged into the adapter, but the manufacturing tolerance for such minor deviations is in the adapter very small.
All in all, I am still very satisfied with the adapter. So far, there were also no problems when closing and opening the notebook notice. (I can not yet say the speed a lot.)
