Added Sys-con: A new sysmodule tested by myself, compatible right now with Atmosphere, SX OS, and Reinx. It will make you use third party controllers, like Xbox 360 gamepad, Xbox One X gamepad, PS3 Dualsock. By the way it is valid connecting the gamepad controller thru the dock with the Switch also connected in the Dock.
Firmwares supported from 5.0.0+.
Remember to enable this service in the RetroReloaded boot manager, Services section.