Bought the Gbros Adapter and started using my Classic Controller with Delta, PPSSPP and Dolphin. All work great Thanks 8bitdo : r/8bitdo
8Bitdo Gbros. Wireless Adapter for Nintend Switch for GameCube for NES/for SNES/for Wii Classic controller|Replacement Parts & Accessories| - AliExpress
Amazon.com: 8Bitdo Gbros. Wireless Adapter for Nintendo Switch (Works with Wired GameCube & Classic Edition Controllers) - Nintendo Switch : Everything Else
8BitDo GBros Adapter Review - GameCube and Classic Controllers Now WIRELESS on Nintendo Switch! - YouTube
Amazon.com: 8Bitdo Gbros. Wireless Adapter for Nintendo Switch (Works with Wired GameCube & Classic Edition Controllers) - Nintendo Switch : Everything Else
Amazon.com: 8Bitdo Gbros. Wireless Adapter for Nintendo Switch (Works with Wired GameCube & Classic Edition Controllers) - Nintendo Switch : Everything Else
Cyber gadget 8Bitdo Gbros. Wireless Adapter for Nintendo Switch For NES SNES 709750008365 | eBay
Hardware Review: 8BitDo GBros. Adapter - Use Your GameCube Pad Wirelessly With Smash Bros. Ultimate | Nintendo Life