Greetings,
OS (build and version) you are using the scanner with?
Is this a new behavior? Did the scanner ever work? Something happen or change? (Dropped, moved, etc)
Have you performed any troubleshooting?
Power cycled the device, reseated the cables, moved the connection to a different port?
The error usually indicates a communication failure. Either from damage, hardware failure or inability to communicate.
~Rick
Bay Area - CA
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