Be a professional or amateur photographer, you need this card reader. Without it, you would use a cable to transfer files, which increases the risk of your beloved camera falling over. You may also use camera wifi, then you will have to get used to documents being transferred slowly or the frequent interruptions. However, if you have a Beikell 4-in-1 card reader, you can say goodbye to the camera transmission, and you can experience a 5Gbps ultra-high speed transmission.1GB files transfered in seconds is not a dream! Small size, easy to carry, dual interface, you can share the beautiful scenery anywhere, anytime.