Hi RandyLB.
The "CNBJNP" port is a proprietary port used with older models and installations of Canon printers, when installed on Windows operating systems. Newer models and installations of Canon printers have been designed to use WSD ports on Windows comptuers, to ensure better integration with the native operating system.
While older models of printer will still install with and use CNBJNP ports, the MG5520 should be using WSD ports when installed on WIndows 8 and 10.
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