Review on Delta Essentials Keyboard Adapter Nintendo Switch by Kyle Ross

To be honest I didn't expect it to work at all, but it worked. Setup is very easy (connect a keyboard and mouse to the device, then connect the device to the Switch dock, then press CTRL+2 on the keyboard). That's it, it's already working. I tested Doom and only had to adjust the sensitivity in the game settings (I do 100 horizontal, 100 vertical and 30 anti-aliasing with a cheap Razer Basilisk). I took off a star because one of my mechanical keyboards wasn't working for some strange reason.