The real storage space in such cards might be 16 GB, 32 GB or even 64 GB, but they report themselves as 2 TB to the host. If you have a SanDisk card, take a look at this article, which details the possible location of serial numbers on its storage products.

Old, slow memory cards are cheap and some companies simply change labels on unsold memory cards to make them look fast, when in reality they are very slow. Until one fully tests the card over its “real” capacity, it is impossible to tell how much of that 2 TB is actually usable!The SanDisk Ultra microSD UHS-I card gives you the freedom to shoot, save and share more than ever before. While such fake cards are unfortunate to come by, they rarely result in data loss and often get used continuously, without the owner even knowing about it. Find the best option for your digital camera with our recommendations for the best 1TB MicroSD cards. Unfortunately, after downloading it on a Mac, I couldn’t get F3X to run on the latest MacOs Mojave, so I ended up compiling F3, which is a command-prompt version of the software (for those who do not know how to compile software on a Mac, I recommend to just find a Windows PC or run Windows on a virtualized environment and use H2Testw instead). UHS Speed Class 3 (U3) designates a performance option designed to support real-time video recording with UHS-enabled host devices.

Dashcam users may want to consider a memory card with higher endurance like the SanDisk MAX Endurance series which promises to last up to 120,000 hours of recording.This is why "the Switch has such low internal storage, and a single GameCube game is at least 1 GB" is a bad argument for their implementation into NSO. This software makes it easy to recover files that have been accidentally deleted (download required).