There is a bewildering variety of USB socket types and -Steckervarianten. Sometimes I think that with any device that offers a USB port, a new type of connector is co-invented. For me, therefore have gained a lot of the supplied cable for devices with time, possessing one of the many different connectors on one side and on the other side inevitably known plug A. stupidity is whenever you now 2 such wants to connect devices, none of which has a socket A, but only a mini or micro version. Inevitably the supplied plug does not fit in such a case mutually. Instead of me now equip with umpteen versions of expensive plug adapters, I've just gained this unique A-socket adapter. So that I can get my already numerous existing cables all use and connect through this adapter each of my devices together. Cheaper it gets.