Review on THKAILAR 64GB USB-C Flash Drive and USB 3.0: Dual Ports, Key Chain, Silver Metal - Ideal for Samsung Galaxy, Mac Pro, PC External Storage by Tyler Markham

I really wish the advertised speeds weren't "PEAK" but true average speeds. The actual read speeds I tested (see around 3MB/s) aren't very good. (Still better than the 50-100 KB/s I tested recently on another unnamed brand). In fact, the test ended in less than 5 minutes instead of 1/2 hour I guess if you really need good writing speed it's better to use a proprietary SD card and a USB 2.x/3.x adapter.