>>715980730
you need this and on original ultimate you needed beta firmware from support
https://shop.8bitdo.com/products/8bitdo-wireless-usb-adapter-2-for-switch-windows-mac-raspberry-pi-compatible-with-xbox-series-x-s-controller-xbox-one-bluetooth-controller-switch-pro-and-ps5-controller

there's 2 versions of ultimate 2: bluetooth and 2.4ghz
bluetooth supports switch mode
>>715980858
that's the OLD one you ape the ultimate 2 comes with usb-c adapter