USBJoy2.0E adapter - Extended Version. Connect your Atari Amiga C64 joystick to PC! Develop your own usb device! - Polish electronics for 3D printers, CNC, robotics, retro computers
The C64 Joystick : Amazon.com.au: Video Games
USB C64 Joystick adapter (for emulator) - Commodore Remix
Joystick - C64-Wiki
TheC64 Micro Switch Joystick
UPDATE] Converting the “Competition Pro Extra USB” to C64/Amiga/Atari DB9 – pagetable.com
Amazon.com: The C64 Micro Switch Joystick (Electronic Games) : Video Games
Amazon.com: Retro Games The C64 USB Joystick for PC : Video Games
C64 Joystick Adapter - Share Project - PCBWay
Converting the “Competition Pro Extra USB” to C64/Amiga/Atari DB9 – pagetable.com
Restored Retro Games The C64 Joystick 19356 (Refurbished) - Walmart.com
C64 Joystick Adapter - Share Project - PCBWay
C64 Joystick Adapter | Hackaday
The C64 Mini Review - IGN
Connect USB Joystick to Commodore C64 - Hackster.io
Competition Pro USB Joystick + '99 Best of C64 Classix®' Games Collection, Jöllenbeck GmbH, Press release - PresseBox
The C64 Joystick (Electronic Games) : Amazon.co.uk: PC & Video Games
Dual 9 Way Atari/Commodore USB Joystick Adaptor
COMPETITION PRO EXTRA USB Joystick, black-red | SL-650212-BKRD