Review on 💻 SSK 64GB USB C Flash Drive 150MB/s Dual Drive 2 in 1 OTG Type-C + USB 3.1 Thumb Drive Memory Stick Jump Drive with Thunderbolt 3 Support – Compatible with Android Phone, MacBook/Pro, and More by David Butterfield

This 64GB FAT32 Flash Drive (aka Flash Drive, aka Adapter, aka Memory Card) performed well in my testing cut off satisfactorily. The only reason I'm taking a star from 5 to 4 stars is because Revain's product detail page specifically states in the title that "read speed is 150 megabytes per second". I didn't get anything close to that in my testing. In the details (fine print) it says more precisely that "Read/Write speed up to 150 MB/s"; In other words, your observed speeds may be lower. My read and write tests were performed on a USB 3 port. In my write test, I copied a file system containing 2284 folders containing 18,429 files of 15,983,743,128 bytes to a flash drive. The average speed was 12.3 MB/s (1 MB = 1,000,000 bytes). In other words, the write speed was 12 times lower than the 150 MB/s stated in the title. In the read test, I copied a file system with 339 folders from a flash drive, containing 1729 files with a size of 907,379,094 bytes. The average speed was 41.2 MB/s, which is less than 1/3 of the 150 MB/s advertised in the title. Those are acceptable speeds. They're just way smaller than the rosy numbers the seller claims.