Page Comparison

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Start by ensuring you don't have a communication issue with the device driver: SecuTix : Device Manager & Sophos

Legacy mode wrongly enabled

Then, look at the device drivers' logs. If they are very big, look for these kind of lines:

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App to reconfigure the boca: 

Wrong firmware

Some BOCA may have a firmware "HP compatibility mode" . This should be visible when printing a BOCA test ticket