Simlink connection

Hi i have 2 questions.

  1. I do use navigraph charts and simlink on a wired network. but simlink connects via wifi with navigraph charts. Is it possible to use the wired connection?
  2. I have noticed that in the appdata -roaming -MS-FSX folder there are 32 old dll.xml_navigraph_simlink… files. Is it wise to remove all except the latest one?