Quickly transfer files with a USB flash drive. You can take a USB flash drive anywhere thanks to its convenient size. There are USB flash drives from 32GB to 2TB. That way, you always have enough storage space for your files and data. If you transfer a lot of 4K and 8K video files, choose a USB flash drive of at least 256GB. Want to quickly copy large files? A USB 3.2 gen 2x2 is the best choice. The USB versions are 10 times faster than USB 3.2 Gen 1.