I purchased this to use with my MacBook Pro with Touch Bar. I needed an easy way to get my drone footage off of my Phantom 4 and onto my MacBook Pro for editing, this is the perfect solution for my needs.
I have used this quite a few times and I have not had any issues. Transfer speeds seem to be super quick. I am mostly transferring from the SanDisk to my Thunderbolt external drive for editing, but even transferring directly to the MBP is super fast as well. Great product, highly recommended!
$29 from Apple; http://apple.co/2jWERok
Apparently Amazon doesn't carry this yet, so no link. :/