Hey guys, I recently got a retina macbook pro and I want to update the SSD in the machine. I know I can get an external but I want in machine solution which leaves two options, using the SD card slot for expansion, or upgrading the SSD. So my first question is can I upgrade the SSD, is this something the Apple Store does and has anyone done this? I know that I can buy and OWC Aura Pro but I would rather do it through Apple to maintain the warranty. I also want to know if anyone has actually put in an Aura Pro in their machine and what the results were? I did go to an apple store and they said that you can change the SSD but you have to change the logic board with it because of how it is configured because just changing the SSD can bring about logic board failures, which may not make the Aura Pro and option. As far as the SD card Slot I want to know if others use it for expansion, and if so what kind of speeds do you see, with read/write. And what the best card to get is. Any advice or help is appreciated. Thanks.