If your smartphone or device uses a Micro USB connection then you need this adaptor. It allows you to instantly add more storage. Now you will be able to view and save files, videos, pictures etc. all to an external storage device like a USB Flash Drive. Save large tv shows or movies to a flash drive and watch them on your smartphone/device with this adaptor. Use and connect to anything that uses USB 2.0. Now you are not resticted to only using Micro USB while you are on the go!