What determines whether you should use a Sandisk A1 or A2 micro SD card for more storage on Android phones? Is the A1 better if not storing photos/videos? - Quora
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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
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SanDisk Extreme Plus; what's A1 or A2 mean, and XC 1 or HC 1? | DJI Mavic, Air & Mini Drone Community
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SD Association Introduces Class A2 Application Performance Class, and UHS-III Standard Supporting Up to 624 MB/s - CNX Software
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