The SD card is excellent, the transfer rates are surprisingly good and fast (without the precisely measured) with my Macbook Pro Retina 15 "2013 (the SD Card Controller managed USB 3.0). Of the older Mac the controller is but managed USB 2.0 transfer rates will be as good as with a USB key.
In terms of size it exceeds a little more than expected, I had read that the MBPr 13 "it exceeded a bit more but not the 15" but in fact if it is a little less exceed the Macbook Air I suppose, but nothing serious, and it will exceed always less than a standard SD card.
Where it's gate is that the card is delivered by the private parcel carrier when sold by Amazon. The carrier is poor and they are liars. Just type "view private parcels" to be convinced, the first result is also an Amazon discussion. I received an email like what a first attempt had been made and as I was away, my card would be provided 5 days (!!!) in a package relay which is located 20km from my house! I called Amazon customer service to reschedule a delivery, and SD card was in my box the letter the following day. The card was packed in a cardboard the size of a postal letter, the carrier is actually just never came to delivery because it would have been directly in my mailbox ... If I had not called I have been good to wait and then to move me ... This is the first time I have an issue with Amazon, which fortunately was quickly resolved. Too bad that Amazon continues to work with private parcel that is not at Amazon usual quality of services!
