I have this card reader now been ordered for the second time. Both readers are with me constantly in use. I have two different bags for my hobbies, was each equipped with it, because I had saved several times the reader in my pocket that I have not had tangible ;-) (Myrphys law says hello) is now full stop. So far, the card reader of all devices was recognized without hesitation that I have used him. The various cards keep you safe in their slots so that also occurred in mild shocks eg the train no contact problems or cards fallen out are the moment during use. Conclusion: good equipment, ease of use, unbeatable price / performance ratio. Highly Recommended!