I bought a 64 GB USB stick to store files size. But if I have to wait for hours, even in small files, it has no meaning. I have a pair of benchmark tests done and I always get maximum write speed of 3.8 MB / sec. Ridiculous! That is about 5 minutes per Gigabyte! USB flash drive (my opinion) should be fast and convenient, but that's not here, so I send it back.