What do the abbreviations A1 and A2 mean on SD cards?
SanDisk Ultra 64GB 100MB/s Class 10 Micro SD SDXC UHS-I A1 Original - Skmmart
A1 vs A2 SanDisk MicroSD Card: What's The Difference? - MyMemory Blog
A1 vs A2 SD Card Ratings Explained (2023)
Are high-speed/high-capacity (A1, A2, U3) microSD cards worth it for Android? With Black Friday and Cyber Monday deals coming up, I (re)tested 5 of those and 2 older ones in 3 quite