Just to rule out everything else first before you send the reader back, does the USB port work with other devices (such as able to recharge a cell phone, load flash drives, or anything else). Although it's rare, the ports themselves can go bad or other problems. Recently mine was haywire simply because the front of my case wasn't fully snapped in so the plugs were a fraction of an inch from being fully inserted. While some devices still worked fine, some did not.
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