Comprehensive and Detailed Explanation From Exact Extract:
To display the serial number in the node details widget using Device Studio, you must add a new data source field, name it "Serial Number," and provide the correct OID that polls the serial number from the device. This field then appears in the node details widget for the custom poller. Editing an existing field's name is not best practice, and UDPs cannot be linked directly to Device Studio widgets.
[Reference:, , Device Studio Admin Guide, “Adding Serial Number Field to Node Details Widget,”, , "Create a data source with the OID for serial number and label the field accordingly in Device Studio.", ===========, ]
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