USB2PCE Adapter Available for Pre-Order | RetroRGB
Turbo Grafx to PC Engine controller adapter | Vrai's Retro Stuff
USB to PC Engine Controller Adapter (USB2PCE)
TurboGrafx-16 Controller to PC Engine Console Adapter | MiSTer Addons
Amazon.com: Tangxi Game IO Board,PC Engine to for SNAC Delayless USB 3.0 Controller Adapter for Mister,for 8BitDo M30 2.4 GHz Controller,Compatible with IO Board 6.1, IO Digital 1.2 and Higher : Video
Amazon.com: PC Engine USB 3.0 Controller Adapter, Game Controller Converter Module Kit for SNAC Adapter for Mister IO Module for 8BitDo M30 2.4 GHz Controller, Plug and Play : Video Games
raphnet. - PCEngine controller to USB adapter
raphnet. - TurboGrafx-16 controller to PCEngine adapter
BitFunx RGBS Video Signal Adapter composite\AV Signal RGBS SCART Signal Output For NEC PC ENGINE/TURBOGRAFX-16 Console
NEC TurboGrafx Turbo Pad to TurboDuo / PC Engine Controller Adapter Cable
Brook Super Converter Adapter for PS3 for PS4 to for MegaDrive/for PC Engine /PC for Switch Pro Controller Gamepad Fighting Stick - AliExpress