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First try moving the device to another USB port!!!

Check that the usb device is functional in the Device Manager.

some USB devices don't appear in Device Manager use the utility program that came bundled with the device to check for errors.

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Q: When you have a problem with a USB device what is the simplest way to determine that the USB port is good?
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When you have a problem with a USB device what is the simplest way to determine that the USB port is not causing the problem?

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