THAT @REM SHOW on Twitter: "This is my full gamut of joysticks, all of which are DB9 ports (not usb). In order: QuickShot (crap), megadrive pad (pretty good), custom nes-type pad (cheap),
USB Adapter For DB9 Joysticks
Converting the “Competition Pro Extra USB” to C64/Amiga/Atari DB9 – pagetable.com
Pocket Joytester for DB9 Joysticks | időrégész.hu
GitHub - matsstaff/CDTV_PS2Mouse_Joy: Arduino PS/2 mouse and joystick adapter for Commodore CDTV
How to build an Amiga Joystick to USB adapter (DB9 to USB) - Retro32
Retronicdesign - New USB DB9 Joystick Adapter for your 30... | Facebook
Dual Atari Joystick and Paddle USB Adapter by iCode – 9pin DB9 to USB