Pen Support ← Knowledge Base What kind of pen/stylus do I need? What is a passive or capacitive pen/stylus? What is an active pen/stylus? What can I do with my pen side button? Why doesn't my pen side button work on my Pixelbook, Pixel Slate, or other Chromebook / Chrome OS device? Why doesn't my Samsung S Pen side button work? Does Squid work with the DirectStylus?