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Message: <blockquote data-quote="pwatts" data-source="post: 1171265" data-attributes="member: 146"><p>It's less likely with USB host devices to fail than slave devices since the slaves are usually connected to PC hosts that can inject all sorts of ESD hell on the USB port, but nonetheless I suspect a hardware failure based on your description if you already ruled out issues of drive and file system. Sometimes it's just the power delivery part that failed so as a last test you can try a self-powered device. Catch is that these devices still often look for presence of host power even if not using it before activating the port so it's still not a clear fault indication.</p></blockquote><p></p>