My card reader that came with my computer died. It was a case that we had to free up memory from the card in our camera, and my wife could not wait until I got the correct part to install on the home computer.This was what brought calm to the house.Just plugged it in, plugged the card into it, and the computer read it. It is small, great for putting it into a drawer and pulling it out when needed.Hmmm, maybe I won't replace the built in card reader....