Here's an opinion about SD cards: https://techcrunch.com/2013/12/29/sd-cards-arent-as-secure-as-we-think/ And here's an interesting site for marketing SD cards. I'm not sure what to make of it: cards:https://www.globalsources.com/manufacturers/Micro-SD-Card.html At this point I'm leaning toward giving up on adding an SD card to the new 2-in-1 laptop.