Review on TOPESEL SuperSpeed 2 Pack 64GB USB 3.0 Flash Drives, High Read Speed up to 90MB/s - Memory Stick Thumb Drive for Data Storage and Transfer - Black, Blue Colors - 64 GB by Robert Aan

This product is said to be compatible with Linux and Mac OS. I'm using OS 10.13.1 and these memory cards didn't work with my Mac desktop when I plugged them into the USB port. I did a little research and found a quick solution. If you are having trouble getting these memory cards to work properly, follow these steps. Turn off your Mac, then turn it back on and immediately hold down these four keys at the same time: Option, Command, P, and R. Hold the keys down for about 20 seconds, during which time your Mac may restart. (If you have a Mac that plays a startup sound when you turn it on, you can release the keys after the second startup sound). Once your Mac has started up, you can open System Preferences and change any reset preferences. B. volume, screen resolution, selection of the boot drive or time zone.