First, I need to clarify why I'm only giving four stars and not five: The cap that covers the USB port doesn't fit the back of the device. This annoys me because the cap inevitably disappears leaving the USB end permanently open even when in storage. Otherwise this device is just great. I bought it to transfer data to and from micro SDXC cards via USB 3.0 and it does it amazingly and fast. I moved 16GB from a 32GB card in just a few minutes (literally a few minutes, no more than twenty) on my Windows 8.1 machine. There's no way I've been able to transfer the same data that quickly with my non-USB 3.0 Hi-Res music player. Please note that you cannot read from an SD card and a micro SD card at the same time on this device; you can only read from one or the other. I also like that the card reader has a blue light that lights up when it's ready. The blue light will turn off if you insert a second card into the device at the same time, letting you know the device is not ready. If you need a reliable little reader then this is it if you are not confused by the header issue.
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