Amazon.com: vienon PS2 Controller to USB Adapter Converter, 2 Pack Compatible with PS1/PS2 Controller Gamepad to PS3/PC Controller No Need Driver : Video Games
Rewiring PS/2 to USB plug | Overclock.net
PlayStation 2 Controller Plug Diagram – Focus Attack LLC
r/Playstation couldn't help, maybe someone here can? Trying to mod my PS1 analog to work with the USB cable that comes with the PSC. I need to know which wires go to
Repairing a PlayStation controller to USB adaptor - Any Colour You Like - GameDev.net
Interfacing a PS2 (PlayStation 2) Controller - Curious Inventor