After some forums digging, I found out that M.2 drives come in: 1. Different lengths - 2242, 2260 and (currently most popular) 2280. While 2242 and 2260 are supported, the 2280 should work, but might be a bit tricky to mount without dedicated expander for screw. Am I right here? 2. Different keys - the B key is supported, but currently market is dominated by M key (which also works in NVMe?), which is unfortunately not. I've come to conclusion that M.2 2280 key M+B would be way more versatile (I could put it into my PC for example). Will this M+B drives work with UDOO x86? Example - Intel 535 (SSDSCKJW180H601) 3. A bit out of topic, but I need to verify it - the microSD slot is for x86, not Quark microcontroller, yes?