To the ones who uses the Victor reader Stream. I want to share something with you. I had purchased a 16gb memory card and I tried to download some books and I got a error saying copy protected. I called the Kingston company and there is a switch on the side of the card that can be seen by a sighted person the switch has to be unlocked by pushing it up. I don't think it is on the 4 or8gb cards but it is on the 16gb. I found this about the Kingston brand only. Victoria