Which Micro SD Card? Sandisk Ultra (A1 U1) vs Amazon Basics (A2 U3) vs Integral (A1 U3)? : r/SteamDeck
A1 vs A2 SanDisk MicroSD Card: What's The Difference? - MyMemory Blog
PNY 128GB Elite Class 10 U1 microSDHC Flash Memory Card for Mobile Devices - 100MB/s, Class 10, U1, V10, A1, Full HD, UHS-I, micro SD - Walmart.com
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