In a few words, all A2-rated Micro SD cards will work, but they will not work at their full random I/O speed without special software support on the host side. AFAIK, no such software support is available in Linux yet.
By the way, I'm currently testing the performance of the F2FS filesystem on "old-style" Micro SD cards that are neither A1 nor A2 rated. So far, the results seem very promising, compared with the ext4 performance, which is the default in all operating system images.
By the way, I'm currently testing the performance of the F2FS filesystem on "old-style" Micro SD cards that are neither A1 nor A2 rated. So far, the results seem very promising, compared with the ext4 performance, which is the default in all operating system images.