I bought this from the MyMemory website, hoping to get a reliable sd card reader with decent transfer rates. It turned out to be a massive disappointment. Despite the fact that my five year old netbook, laptop and £3 SD card reader I got from Amazon can do it, this reader is not guaranteed to work with micro sd cards in adapters. Incredible. So almost all branded adapters will confuse this expensive gadget into thinking the micro sd card is write-protected. Only the Maxflash adapters work. I contacted Lexar, who told me that they don’t guarantee the reader will read anything other than Lexar SD cards, and MyMemory refused a refund for the same reason. You win some, you lose some, but I wanted to post this because this issue wasn’t mentioned in any reviews I looked at and the small print is very small.