Over all the product performs well, and is a good replacement for my old card reader. The old one failed when the attached cord broke and could not be repaired. I like the detachable cord but wish that both ends were standard USB connection. The one thing that is a slight negative is the fact that the slots are not well marked. The ports are marked but the markings are on the underside, and difficult to see, unless you hold it at the proper angle to the light. In poor light they are not always readable.