Valve could be working on a new Steam Controller | TechSpot
VR Controller Fast Charging Dock for Valve Index VR Headset Gamepad Controller Handle Grip with 2 Magnetic Charging Cable|VR/AR Glasses Accessories| - AliExpress
How to design a gamepad: A look at Valve's Steam Controller prototypes - ExtremeTech
Steam Controller on Steam
Valve Steam Controller Black Model 1001 - VERY GOOD condition | eBay