I purchased it only for the purpose of contrasting the performance of low-cost SanDisk and Kingston memory cards when connected to a laptop's built-in card reader. Although they are both slow, Kingston's write speed is less steady and it has a lower capacity than what is advertised. It also comes with an adapter and is less expensive than SanDisk.
Memory card Samsung microSDXC 256 GB Class 10, V30, A2, UHS-I U3, R 130 MB/s, adapter to SD
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Silicon Power Elite 64GB microSDXC 2-Pack Memory Card with Adapter for Nintendo Switch and Wyze Cam
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Smartphone Xiaomi Mi 8 Lite 6/128 GB, midnight black
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Kingston microSDXC 64GB Class 10, V10, A1, UHS-I U1, R 100MB/s Memory Card, SD Adapter, 1 pc, Black
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