Of all the adapters I've tested this is a winner, everything you need to set up or configure is right on the keyboard. / map the controller buttons to your keyboard/mouse, you need to connect (official switch pro controller) to the adapter, then press F11+F12, and the blue light on the adapter will light up, then press and hold the controller button and then press the keyboard button or mouse button that you want to use for that controller button. When you're done setting up your keyboard and mouse button mapping, simply press F11+F12 to turn off settings mode, then turn off the controller and you're done. The adapter allows you to save 8 profiles by holding F12 and then pressing F1-F8, allowing you to customize the adapter for multiple playstyles/games. This adapter was designed only for the Pro Controller, so its emulation/joystick converter is high tech and works great. So there is no lag when pressing the keys, and the accuracy of the mouse is at its best. No compatibility issues with gaming mice/keyboards, which all have bells and whistles. An official Nintendo Pro controller is required, but only for keyboard operation. /Mouse key assignment. I bought several third party officially licensed Nintendo controllers just to test them and none of them worked.