There is at least one compatibility issue with specific Samsung M.2 SSDs that are plaguing the NUC products right now (see the NUC forum for more details). It is possible (and, in fact, much more likely) that this/these compatibility issue(s) also apply to the (older) Desktop Board products. I am sure that Intel will be doing whatever they can to fix these issues for the NUC products but, because the Desktop Board products have been end-of-lifed, I rather doubt you will see these fixes included in BIOSs for them (even if they do apply). For the 8 Series Intel Desktop Board products, I would stick with SATA and MSATA SSDs...
Sorry I couldn't be more helpful...
Visual BIOS utilizes a fixed 1024 x 768 pixel display; it is not designed to scale. If the monitor is capable of running at this particular resolution, then it is configured to do so when Visual BIOS is initiated. If the monitor is not capable of running at this resolution, however, Visual BIOS will display itself in a 1024 x 768 pixel window at the center of the screen. Depending upon the actual resolution of the monitor, this could potentially be a very small portion of the available screen space.