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Be sure that your Printer is connected to your PC by USB.
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Open the Device Manager in Windows
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The easiest way to do this by typing Device Manager into the seach bar. It should appear as one of the results.
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If the search does not work, Select Control Panel>Hardware and Sound>Device Manager
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Under the Ports(COM & LPT) heading find the entry labeled Arduino Mega 2560 and note the COM number next to it.
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One other person completed this guide.
2 Comments
It worked great! Suggest that you say Search for "device manager" not "dev".
And its fixed!