Steam Controller prototype version 2 impressions: Buttoned up | Ars Technica
SteamDB on Twitter: "Valve has changed their Steam controller once again, here's an image showing the latest revision http://t.co/kFVhMQ0XrC" / Twitter
Steam Controller – Cash Gen UK Limited
Valve Software Wireless Steam Controller : Amazon.co.uk: PC & Video Games
Steam Community :: Group :: Steam Universe
Steam Controller - Wikipedia
Valve V000692-01 Steam Controller for sale online | eBay
Valve Software Wireless Steam Controller : Amazon.co.uk: PC & Video Games
Hands On With Valve's Steam Controller | PCMag
Steam Input Devices (Steamworks Documentation)
Steam Controller (Steamworks Documentation)
Steam Controller 2. Oh no, Valve 'want to make it happen' | PC Gamer
The Life, Embarrassing Death, and Legacy of the Steam Controller - YouTube
What the Steam Controller tells us about the way Valve works | Games | The Guardian