Hi! How are you? The reason why I'm here is to find out more about SDXC support/compatibility info on the macbook air 2012 and how to fix this nagging issue if it's fixable.
I had just bought a Sandisk extreme pro 64GB rated at 95mb/s for my Nikon DSLR. Unfortunately, MBA struggles to detect or mount my card, after a few sweats, it would mount, but then very slow to process and preview the images as "Thumbnail preview". Then, after a few more sweats, you can scroll through the thumbnails smoothly.
Streaming HD videos straight from the SD Slot is butcher chopping the beef. Video lags, stutters, chops, in otherwords, USELESS and a pain in the neck. So you just want to copy all the files to your macbook, and play from there. Copying files from SDXC to my macbook takes forever; writing is also another issue that take much more than forever!
I have a top of the line macbook air 2012 (i7, 8GB, 512) and I always thought it's a versatile reliable computer but now I'm very disappointed. On the other hand, doing the same things on my macbook pro 2010 is seamless. I also tested on my windows 8 desktop to be flawless as well.
Therefore, the memory card is not the problem. It's macbook air's sd slot that's a failure. I never thought spending $2,199 for a super computer would make me stress like this. In addition, the magsafe 2 is another failure in design. It always disconnects just by moving my macbook air from one spot of the table to another. Having it charged while on my lap gets on my nerves when it keeps getting disconnected! I hate Apple for doing this. If only there was a Windows notebook that surpasses Apple's design, I would never EVER buy Apple products EVER again.