How To Connect An Xbox One S Controller To Steam Link PC: Bluetooth Controller Update Tutorial - YouTube
How to set up Steam Link | PCWorld
In addition to Xbox 360 and Xbox One controllers, it was discovered that Steam Link also supports PS3 and PS4 controllers. I decided to give my Wii U Pro controller a shot. :
Microsoft now lets you stream PC games to an Xbox One and use a controller - The Verge
Steam Link App Beta Available now on Android; iOS To Follow