In Wisenet Device Manager 2.1.X or higher there is a pane on the lower left of the screen that allows to force Device Manager to search a particular network Connection.

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Highlight and Right Click lick on the preferred network connection. The Enable box will appear. Left click this box (Pictured Below.)

An asterisk will appear next to the network you have selected:

Press the Search button, this should bring in results from that network.