I have both your MX Keys S and MX Master 3S. Very quality products, but the software limitations make them fall short of perfection. It seems ridiculous to me that they can't easy-switch together when you click another device on the keyboard. It is massively tedious to have to turn the mouse upside down to toggle a different device. No clue why other logi mice have a button on top, but this flagship model does not. Either way...it should all be handled by the keyboard if you spent over $200 on both. Seems like a massive oversight. Also, if you let mac users redefine the Home / End buttons...you would make millions of people very happy, they'd all buy your product. Mac users are stuck with the worst definition of Home and End imaginable and there's nothing Apple will do to fix it. It's embarassing how terrible it is. You could be our hero by letting us assign a keyboard shortcut to Home and End that would correct Apple's terrible decision making process. Thanks