Up to 100MB/s transfer speeds let you move up to 1000 photos in a minute (5) | Up to 120MB/s read speed, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speed. Write speeds lower. Based on internal testing; performance may be lower | (5) Based on internal testing on images with an average file size of 3.55MB (up to 3.7GB total) with USB 3.0 reader. Your results will vary based on host device, file attributes, and other factors.