Bought this XPS 13 9310 touch version 2 weeks ago and has these two pen model PN579x for the laptop. Found out the pen buttons are working fine but not the touch.
Dell Premium Active Pen (PN579X) | Dell USA
Dell Inspiron 13 7390 and 7590 2-in-1 have magnetic "pen garages" for housing the stylus - NotebookCheck.net News