We hate Valve's Steam Controller because it's different | Engadget
Pour one out for the Steam Controller, sold out forever after $5 fire sale - The Verge
Valve Injects Steam With Accessories For Its Steam Controller | Digital Trends
Valve Steam Controller Review | PCMag
Steam Input Devices (Steamworks Documentation)
How to design a gamepad: A look at Valve's Steam Controller prototypes | Extremetech
SteamDB on Twitter: "Valve has changed their Steam controller once again, here's an image showing the latest revision http://t.co/kFVhMQ0XrC" / Twitter
Valve announces Steam Controller - Polygon
Amazon.com: Steam Controller : Video Games
Here's a closer look at Valve's latest Steam Controller - Polygon