. I bought it for use with the new MacBook 12 "Retina Small and practical with its two connector Type A and Type C, it facilitates trade, but it is not very fast for a USB 3.0: only 50 MB / s write and 65 MB / s read (results Blackmagic Disk Speed Test). The same results were obtained on both connectors. So a little disappointed, especially considering the price for a key 32 GB ...