Hello all, I've looked everywhere but can't find anything pertaining to my question. Has anyone ever benchmarked the Surface Pro 2's SDXC slot? If it runs off of a USB 2.0 bus, then I don't want to bother getting a fast 64gb card that can do 90MB/s, I'll just spend a little bit more money and get a 128gb card that does 30MB/s. I spoke to someone on the microsoft store's chat, and they said it had a max throughput of 30MB/s. Just want to clarify if that's true or not. Thanks!